{"id":15288,"date":"2026-05-13T10:41:51","date_gmt":"2026-05-13T02:41:51","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=15288"},"modified":"2026-06-25T10:02:03","modified_gmt":"2026-06-25T02:02:03","slug":"420-stainless-steel-heat-treatment","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/420-stainless-steel-heat-treatment\/","title":{"rendered":"420\uac15 \uc5f4\ucc98\ub9ac \uac00\uc774\ub4dc | \uacbd\ud654, \ub2f4\uae08\uc9c8 \ubc0f \ud15c\ud37c\ub9c1"},"content":{"rendered":"<section class=\"aobo-420-heat-treatment-page\">\n  <style>\n    .aobo-420-heat-treatment-page {\n      --aobo-blue: #0c56d0;\n      --aobo-blue-dark: #073b8e;\n      --aobo-blue-soft: #eaf2ff;\n      --aobo-border: #d7e5fb;\n      --aobo-text: #203044;\n      --aobo-muted: #617087;\n      --aobo-orange: #f59b23;\n      --aobo-white: #ffffff;\n      --aobo-shadow: 0 18px 45px rgba(12, 86, 208, 0.10);\n      --aobo-page-width: 1180px;\n      font-family:inherit;\n      color: var(--aobo-text);\n      line-height: 1.7;\n      background: transparent;\n      padding: 0;\n      box-sizing: border-box;\n    }\n\n    .aobo-420-heat-treatment-page * {\n      box-sizing: border-box;\n    }\n\n    .aobo-wrap {\n      max-width: var(--aobo-page-width);\n      margin: 0 auto;\n      padding: 0;\n    }\n\n    .aobo-hero {\n      background: linear-gradient(135deg, #ffffff 0%, #f7fbff 58%, #eaf2ff 100%);\n      border: 1px solid var(--aobo-border);\n      border-radius: 26px;\n      padding: 42px 38px;\n      margin-bottom: 30px;\n      box-shadow: var(--aobo-shadow);\n      overflow: hidden;\n      position: relative;\n    }\n\n    .aobo-hero::after {\n      content: \"\";\n      position: absolute;\n      right: -90px;\n      top: -90px;\n      width: 260px;\n      height: 260px;\n      border-radius: 50%;\n      background: rgba(12, 86, 208, 0.08);\n    }\n\n    .aobo-eyebrow {\n      display: inline-block;\n      margin-bottom: 12px;\n      padding: 6px 12px;\n      border-radius: 999px;\n      background: #fff7ed;\n      border: 1px solid #fde3bd;\n      color: var(--aobo-orange);\n      font-size: 14px;\n      font-weight: 700;\n      position: relative;\n      z-index: 2;\n    }\n\n    .aobo-hero h1 {\n      margin: 0 0 16px;\n      color: #082d6f;\n      font-size: clamp(34px, 4vw, 54px);\n      line-height: 1.06;\n      letter-spacing: 0;\n      position: relative;\n      z-index: 2;\n    }\n\n    .aobo-hero p {\n      max-width: 940px;\n      margin: 0 0 12px;\n      font-size: 17px;\n      color: #314158;\n      position: relative;\n      z-index: 2;\n    }\n\n    .aobo-hero p:last-child {\n      margin-bottom: 0;\n    }\n\n    .aobo-article {\n      max-width: var(--aobo-page-width);\n      margin: 0 auto;\n    }\n\n    .aobo-article h2 {\n      margin: 44px 0 16px;\n      color: #082d6f;\n      font-size: 30px;\n      line-height: 1.25;\n      letter-spacing: 0;\n    }\n\n    .aobo-article h3 {\n      margin: 30px 0 10px;\n      color: #123f88;\n      font-size: 22px;\n      line-height: 1.3;\n      letter-spacing: 0;\n    }\n\n    .aobo-article p {\n      margin: 0 0 18px;\n      font-size: 17px;\n      color: var(--aobo-text);\n    }\n\n    .aobo-article a,\n    .aobo-hero a {\n      color: var(--aobo-blue);\n      font-weight: 700;\n      text-decoration: none;\n      transition: color 0.2s ease, background 0.2s ease;\n    }\n\n    .aobo-article a:hover,\n    .aobo-hero a:hover {\n      color: var(--aobo-orange);\n      background: var(--aobo-blue-soft);\n    }\n\n    .aobo-table-wrap {\n      overflow-x: auto;\n      margin: 22px 0 28px;\n      border-radius: 18px;\n      border: 1px solid var(--aobo-border);\n      box-shadow: 0 12px 32px rgba(12, 86, 208, 0.07);\n    }\n\n    .aobo-table {\n      width: 100%;\n      border-collapse: collapse;\n      background: var(--aobo-white);\n      min-width: 760px;\n    }\n\n    .aobo-table th {\n      background: var(--aobo-blue-soft);\n      color: #082d6f;\n      text-align: left;\n      padding: 14px 16px;\n      font-size: 15px;\n      vertical-align: top;\n    }\n\n    .aobo-table td {\n      padding: 14px 16px;\n      border-bottom: 1px solid #e8eef8;\n      vertical-align: top;\n      font-size: 15px;\n    }\n\n    .aobo-table tr:last-child td {\n      border-bottom: none;\n    }\n\n    .aobo-table td:first-child {\n      color: #082d6f;\n      font-weight: 700;\n    }\n\n    .aobo-note-box {\n      margin: 34px 0;\n      padding: 22px 24px;\n      border: 1px solid var(--aobo-border);\n      border-left: 5px solid var(--aobo-orange);\n      border-radius: 16px;\n      background: #fbfdff;\n      color: var(--aobo-muted);\n    }\n\n    .aobo-note-box p {\n      margin: 0 0 12px;\n      color: var(--aobo-muted);\n    }\n\n    .aobo-note-box p:last-child {\n      margin-bottom: 0;\n    }\n\n    .aobo-supply-block {\n      display: grid;\n      grid-template-columns: auto minmax(0, 1fr);\n      align-items: center;\n      gap: 24px;\n      margin: 0 0 30px;\n      border: 1px solid var(--aobo-border);\n      border-radius: 24px;\n      background: #ffffff;\n      box-shadow: 0 14px 36px rgba(12, 86, 208, 0.09);\n      overflow: hidden;\n      padding: 24px;\n    }\n\n    .aobo-supply-image {\n      width: 190px;\n      aspect-ratio: 1;\n      border: 1px solid var(--aobo-border);\n      border-radius: 18px;\n      overflow: hidden;\n      background: #f7fbff;\n    }\n\n    .aobo-supply-image img {\n      display: block;\n      width: 100%;\n      height: 100%;\n      object-fit: cover;\n    }\n\n    .aobo-supply-content {\n      display: flex;\n      flex-direction: column;\n      justify-content: center;\n      padding: 0;\n    }\n\n    .aobo-supply-content h2 {\n      margin: 0 0 8px;\n      color: #082d6f;\n      font-size: 24px;\n      line-height: 1.25;\n      letter-spacing: 0;\n    }\n\n    .aobo-supply-content p {\n      margin: 0;\n      font-size: 17px;\n      color: var(--aobo-text);\n    }\n\n    .aobo-supply-actions {\n      display: flex;\n      flex-wrap: wrap;\n      gap: 12px;\n      margin-top: 18px;\n    }\n\n    .aobo-supply-actions .aobo-btn {\n      min-width: 210px;\n    }\n\n    .aobo-final-cta {\n      margin-top: 34px;\n      padding: 32px 34px;\n      border-radius: 24px;\n      background: linear-gradient(135deg, #073b91 0%, #0c56d0 100%);\n      color: #ffffff;\n      box-shadow: 0 18px 45px rgba(12, 86, 208, 0.20);\n      display: flex;\n      align-items: center;\n      justify-content: space-between;\n      gap: 20px;\n      flex-wrap: wrap;\n    }\n\n    .aobo-final-cta h2 {\n      margin: 0 0 12px;\n      color: #ffffff;\n      font-size: 26px;\n      line-height: 1.25;\n      letter-spacing: 0;\n    }\n\n    .aobo-final-cta p {\n      margin: 0;\n      color: rgba(255, 255, 255, 0.92);\n      max-width: 820px;\n      font-size: 16px;\n    }\n\n    .aobo-cta-buttons {\n      display: flex;\n      gap: 10px;\n      flex-wrap: wrap;\n      align-items: center;\n    }\n\n    .aobo-btn {\n      display: inline-flex;\n      align-items: center;\n      justify-content: center;\n      text-align: center;\n      min-height: 42px;\n      padding: 10px 18px;\n      border-radius: 999px;\n      text-decoration: none;\n      font-weight: 700;\n      font-size: 14px;\n      line-height: 1.2;\n      transition: all 0.2s ease;\n      cursor: pointer;\n      white-space: nowrap;\n    }\n\n    .aobo-btn:hover {\n      transform: translateY(-1px);\n    }\n\n    .aobo-btn-primary {\n      background: var(--aobo-blue);\n      color: #ffffff !important;\n      border: 1px solid var(--aobo-blue);\n    }\n\n    .aobo-btn-secondary {\n      background: #ffffff;\n      color: var(--aobo-blue) !important;\n      border: 1px solid var(--aobo-border);\n    }\n\n    .aobo-final-cta .aobo-btn {\n      flex: 0 0 auto;\n      background: #ffffff;\n      border: 1px solid #ffffff;\n      color: var(--aobo-blue) !important;\n    }\n\n    .aobo-final-cta .aobo-btn:hover {\n      transform: translateY(-1px);\n      background: #fff7ed;\n      color: var(--aobo-blue-dark) !important;\n    }\n\n    .aobo-final-cta .aobo-btn-detail {\n      background: transparent;\n      border-color: rgba(255, 255, 255, 0.75);\n      color: #ffffff !important;\n    }\n\n    .aobo-final-cta .aobo-btn-detail:hover {\n      background: rgba(255, 255, 255, 0.14);\n      border-color: #ffffff;\n      color: #ffffff !important;\n    }\n\n    @media (max-width: 760px) {\n      .aobo-hero {\n        padding: 30px 22px;\n        border-radius: 22px;\n      }\n\n      .aobo-article h2 {\n        font-size: 25px;\n      }\n\n      .aobo-article h3 {\n        font-size: 20px;\n      }\n\n      .aobo-final-cta {\n        padding: 26px 22px;\n        border-radius: 22px;\n      }\n\n      .aobo-cta-buttons {\n        width: 100%;\n        flex-direction: column;\n        align-items: stretch;\n      }\n\n      .aobo-supply-block {\n        grid-template-columns: 1fr;\n        gap: 18px;\n        padding: 20px;\n      }\n\n      .aobo-supply-image {\n        width: min(190px, 100%);\n        margin: 0 auto;\n      }\n\n      .aobo-supply-actions .aobo-btn {\n        width: 100%;\n      }\n    }\n  <\/style>\n\n  <div class=\"aobo-wrap\">\n    <header class=\"aobo-hero\">\n      <span class=\"aobo-eyebrow\">420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac \uac00\uc774\ub4dc<\/span>\n      <h1>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac \uac00\uc774\ub4dc<\/h1>\n      <p>\uc5f4\ucc98\ub9ac\ud558\ub2e4 <a href=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel\/\">420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15<\/a>, preheat to about 650\u00b0C \/ 1200\u00b0F, then austenitize at 954\u20131010\u00b0C \/ 1750\u20131850\u00b0F, followed by air or oil quenching. After quenching, temper immediately according to the required hardness, toughness, and corrosion resistance.<\/p>\n      <p>For high-hardness applications, 420 stainless steel is usually tempered at lower temperatures. Typical reference points are about 150\u00b0C \/ 300\u00b0F for around 52 HRC minimum, 204\u00b0C \/ 400\u00b0F for around 50 HRC minimum, and 316\u00b0C \/ 600\u00b0F for around 48 HRC minimum.<\/p>\n      <p>The tempering range of 427\u2013566\u00b0C \/ 800\u20131050\u00b0F should generally be avoided, as it may reduce impact strength and corrosion resistance.<\/p>\n    <\/header>\n\n    <main class=\"aobo-article\">\n      <section class=\"aobo-supply-block\" aria-label=\"420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ubb38\uc758 \ubc0f \uc81c\ud488 \uc0c1\uc138 \uc815\ubcf4\">\n        <div class=\"aobo-supply-image\">\n          <img decoding=\"async\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/07\/420-stainless-steel.avif\" alt=\"\uc544\uc624\ubcf4 \uc2a4\ud2f8\uc5d0\uc11c \uacf5\uae09\ud558\ub294 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\" loading=\"lazy\">\n        <\/div>\n        <div class=\"aobo-supply-content\">\n          <h2>\uc5f4\ucc98\ub9ac \ubd80\ud488\uc6a9 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \ud544\uc694\ud558\uc2e0\uac00\uc694?<\/h2>\n          <p>\uc544\uc624\ubcf4 \uc2a4\ud2f8\uc740 \uae08\ud615, \ube14\ub808\uc774\ub4dc, \uc0e4\ud504\ud2b8, \ub9c8\ubaa8 \ubd80\ud488 \ubc0f \uc815\ubc00 \ubd80\ud488\uc6a9 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc744 \uacf5\uae09\ud569\ub2c8\ub2e4. \ub300\ub7c9 \uacf5\uae09\uc744 \uc6d0\ud558\uc2dc\uba74 \ud544\uc694\ud55c \ud06c\uae30, \uc218\ub7c9 \ubc0f \ud45c\uba74 \uc0c1\ud0dc\ub97c \uc54c\ub824\uc8fc\uc2ed\uc2dc\uc624.<\/p>\n          <div class=\"aobo-supply-actions\">\n            <a class=\"aobo-btn aobo-btn-primary popmake-16052\" href=\"javascript:void(0);\">\ubb38\uc758 \ubcf4\ub0b4\uae30<\/a>\n            <a class=\"aobo-btn aobo-btn-secondary\" href=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel\/\">\ubdf0 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8<\/a>\n          <\/div>\n        <\/div>\n      <\/section>\n\n      <p>420 stainless steel is a hardenable martensitic stainless steel. After proper heat treatment, it typically reaches 46\u201352 HRC in working applications while maintaining useful wear resistance, polishability, and moderate corrosion resistance. Final performance depends on section size, quenching method, tempering temperature, furnace atmosphere, and the required application.<\/p>\n      <p>\uc774 \uac00\uc774\ub4dc\ub294 \uc608\uc5f4, \uc624\uc2a4\ud14c\ub098\uc774\uc9d5, \ub2f4\uae08\uc9c8, \ud15c\ud37c\ub9c1 \ucc28\ud2b8, \uc608\uc0c1 \uacbd\ub3c4, \uc77c\ubc18\uc801\uc778 \uc624\ub958 \ubc0f \uc6a9\ub3c4\ubcc4 \uc5f4\ucc98\ub9ac \uc9c0\uce68\uc744 \ud3ec\ud568\ud558\uc5ec 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc2e4\uc81c \uc5f4\ucc98\ub9ac \uacf5\uc815\uc744 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n\n      <h2>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac \uacf5\uc815 \uac1c\uc694<\/h2>\n      <p>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ucd5c\uc885 \uc5f4\ucc98\ub9ac \uacb0\uacfc\ub294 \uac00\uc5f4 \uc628\ub3c4, \uc720\uc9c0 \uc2dc\uac04, \ub2f4\uae08\uc9c8 \ubc29\ubc95, \ud15c\ud37c\ub9c1 \uc628\ub3c4, \ud45c\uba74 \ubcf4\ud638 \ubc0f \ubd80\ud488 \ud615\uc0c1\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\ud504\ub85c\uc138\uc2a4 \ub2e8\uacc4<\/th><th>\uc77c\ubc18\uc801\uc778 \ubc94\uc704 \ub610\ub294 \ubc29\ubc95<\/th><th>\ubaa9\uc801<\/th><th>\uc2e4\uc6a9\uc801\uc778 \ucc38\uace0 \uc0ac\ud56d<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>\uccad\uc18c<\/td><td>\uac00\uc5f4\ud558\uae30 \uc804<\/td><td>\uae30\ub984, \uadf8\ub9ac\uc2a4 \ubc0f \uc794\uc5ec\ubb3c\uc744 \uc81c\uac70\ud558\uc2ed\uc2dc\uc624.<\/td><td>\ud45c\uba74\uc774 \ub354\ub7ec\uc6b0\uba74 \ub0b4\uc2dd\uc131\uacfc \ud45c\uba74 \ud488\uc9c8\uc774 \uc190\uc0c1\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\ubcf4\ud638 \ubd84\uc704\uae30<\/td><td>\uc9c4\uacf5, \uc911\uc131 \ubd84\uc704\uae30 \ub610\ub294 \uc911\uc131 \uc18c\uae08\ubb3c<\/td><td>\uc0b0\ud654 \ubc0f \ud0c8\ud0c4 \uac10\uc18c<\/td><td>\uad11\ud0dd \ubd80\ud488, \uae08\ud615 \ubc0f \ub0b4\uc2dd\uc131 \uc6a9\ub3c4\uc5d0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc608\uc5f4<\/td><td>About 650\u00b0C \/ 1200\u00b0F<\/td><td>\uc5f4\ucda9\uaca9\uc744 \uc904\uc774\uc138\uc694<\/td><td>\ud2b9\ud788 \ud06c\uac70\ub098 \ubcf5\uc7a1\ud558\uac70\ub098 \uc815\ubc00\ud55c \ubd80\ud488\uc5d0 \uc720\uc6a9\ud569\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654<\/td><td>About 954\u20131010\u00b0C \/ 1750\u20131850\u00b0F<\/td><td>\uac15\ucca0\uc744 \uacbd\ud654\uc2dc\ud0a4\uae30 \uc704\ud55c \uc900\ube44<\/td><td>\ucd5c\uace0\uae09 \uc18c\uc7ac\ub294 \ucd5c\ub300 \uacbd\ub3c4\uc640 \ub0b4\uc2dd\uc131\uc744 \uc704\ud574 \uc0ac\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\ub2f4\uadf8\uae30<\/td><td>\uac00\uc7a5 \ub450\uaebc\uc6b4 \ub2e8\uba74 \ub450\uaed8 1\uc778\uce58\ub2f9 \uc57d 30\ubd84<\/td><td>\ud574\ub2f9 \ubd80\ubd84\uc744 \uade0\uc77c\ud558\uac8c \uac00\uc5f4\ud558\uc138\uc694<\/td><td>\ubd88\ud544\uc694\ud558\uac8c \uacfc\ub3c4\ud558\uac8c \ub2f4\uadf8\ub294 \uac83\uc744 \ud53c\ud558\uc138\uc694<\/td><\/tr>\n            <tr><td>\ub2f4\uae08\uc9c8<\/td><td>\uacf5\uae30 \ub610\ub294 \uae30\ub984<\/td><td>\uacbd\ud654\ub41c \ub9c8\ub974\ud150\uc0ac\uc774\ud2b8 \ud615\uc131<\/td><td>\ubd80\ud488 \ud06c\uae30, \ubaa8\uc591 \ubc0f \uacbd\ub3c4 \uc694\uad6c \uc0ac\ud56d\uc5d0 \ub530\ub77c \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ub2f4\uae08\uc9c8<\/td><td>\ud544\uc694\ud55c \uc18d\uc131\uc5d0 \ub530\ub77c \ub2e4\ub985\ub2c8\ub2e4<\/td><td>\uacbd\ub3c4, \uc778\uc131 \ubc0f \uc548\uc815\uc131\uc744 \uc870\uc815\ud569\ub2c8\ub2e4.<\/td><td>\ub2f4\uae08\uc9c8 \uc9c1\ud6c4 \ud15c\ud37c\ub9c1<\/td><\/tr>\n            <tr><td>\uc774\uc911 \uc5f4\ucc98\ub9ac<\/td><td>\uc911\uc694 \ubd80\ud488\uc5d0 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/td><td>\uc2a4\ud2b8\ub808\uc2a4 \ud574\uc18c \ubc0f \uc2ec\ub9ac\uc801 \uc548\uc815\uac10 \uc99d\uc9c4<\/td><td>\uc628\ub3c4 \uc870\uc808 \uc0ac\uc774\uc5d0\ub294 \uc2e4\uc628\uc73c\ub85c \uc2dd\ud788\uc2ed\uc2dc\uc624.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>Annealing is not part of the main hardening cycle. It is used when the material needs to be softened before machining, forming, or re-hardening. For 420 stainless steel, subcritical annealing may be carried out around 675\u2013760\u00b0C \/ 1245\u20131400\u00b0F, while full annealing may be carried out around 830\u2013885\u00b0C \/ 1525\u20131625\u00b0F, followed by controlled cooling.<\/p>\n\n      <h2>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \ub2e8\uacc4\ubcc4 \uc5f4\ucc98\ub9ac<\/h2>\n      <p>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc8fc\uc694 \uacbd\ud654 \uacf5\uc815\uc740 \uc608\uc5f4, \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \ubc0f \ub2f4\uae08\uc9c8, \ud15c\ud37c\ub9c1\uc758 \uc138 \ub2e8\uacc4\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4. \uc138\ucc99 \ubc0f \ubd84\uc704\uae30 \uc81c\uc5b4\ub294 \uac00\uc5f4 \uc804\uc5d0 \uc644\ub8cc\ud574\uc57c \ud558\uc9c0\ub9cc, \uc5f4\ucc98\ub9ac \uacb0\uacfc\ub294 \uc8fc\ub85c \uc774 \uc138 \ub2e8\uacc4\uc5d0 \uc758\ud574 \uacb0\uc815\ub429\ub2c8\ub2e4.<\/p>\n\n      <h3>1\ub2e8\uacc4: 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8\uc744 \uc608\uc5f4\ud569\ub2c8\ub2e4.<\/h3>\n      <p>\uc608\uc5f4\uc740 \uac15\ucca0\uc774 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \uc628\ub3c4\uc5d0 \ub3c4\ub2ec\ud558\uae30 \uc804\uc5d0 \ubc1c\uc0dd\ud558\ub294 \uc5f4 \ucda9\uaca9\uc744 \uc904\uc5ec\uc90d\ub2c8\ub2e4. \uc774\ub294 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \ub9ce\uc740 \ud0c4\uc18c\uac15\uc774\ub098 \uc800\ud569\uae08\uac15\ubcf4\ub2e4 \uc5f4\uc804\ub3c4\uc728\uc774 \ub290\ub9ac\uae30 \ub54c\ubb38\uc5d0 \uc911\uc694\ud569\ub2c8\ub2e4. \uae09\uc18d \uac00\uc5f4\uc740 \ud45c\uba74\uacfc \ub0b4\ubd80 \uc0ac\uc774\uc5d0 \uc628\ub3c4 \ucc28\uc774\ub97c \ubc1c\uc0dd\uc2dc\ucf1c \ubcc0\ud615\uc774\ub098 \uade0\uc5f4\uc758 \uc704\ud5d8\uc744 \uc99d\uac00\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n      <p>A common preheating temperature for 420 stainless steel is about 650\u00b0C (1200\u00b0F).<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\ubd80\ud488 \uc0c1\ud0dc<\/th><th>\uc608\uc5f4\uc774 \uc911\uc694\ud55c \uc774\uc720<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>\ud070 \ubd80\ubd84<\/td><td>\ud45c\uba74\uacfc \uc911\uc2ec\ubd80\uc758 \uc628\ub3c4 \ucc28\uc774\ub97c \uc904\uc5ec\uc90d\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc587\uac70\ub098 \uace0\ub974\uc9c0 \uc54a\uc740 \ubd80\ubd84<\/td><td>\uc65c\uace1 \uc704\ud5d8\uc744 \uc904\uc785\ub2c8\ub2e4<\/td><\/tr>\n            <tr><td>\ub0a0\uce74\ub85c\uc6b4 \ubaa8\uc11c\ub9ac \ub610\ub294 \ubcf5\uc7a1\ud55c \ubaa8\uc591<\/td><td>\uade0\uc5f4 \uc704\ud5d8\uc744 \uc904\uc5ec\uc90d\ub2c8\ub2e4<\/td><\/tr>\n            <tr><td>\uc815\ubc00 \uae08\ud615 \ubd80\ud488<\/td><td>\uce58\uc218 \uc548\uc815\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc774\uc804\uc5d0 \uacbd\ud654 \ucc98\ub9ac\ub41c \ubd80\ud488<\/td><td>\uc7ac\uacbd\ud654 \uacfc\uc815 \uc911 \uc5f4 \ucda9\uaca9\uc744 \uc904\uc5ec\uc90d\ub2c8\ub2e4.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>\uc608\uc5f4 \uc804\uc5d0 \ud45c\uba74\uc740 \uae68\ub057\ud574\uc57c \ud569\ub2c8\ub2e4. \uc624\uc77c, \uadf8\ub9ac\uc2a4 \ubc0f \ud0c4\uc18c \ud568\uc720 \uc794\ub958\ubb3c\uc744 \uc81c\uac70\ud574\uc57c \ud569\ub2c8\ub2e4. \uc6b0\uc218\ud55c \uc5f0\ub9c8\uc131 \ub610\ub294 \ub0b4\uc2dd\uc131\uc774 \uc694\uad6c\ub418\ub294 \ubd80\ud488\uc758 \uacbd\uc6b0 \uc9c4\uacf5, \uc911\uc131 \ubd84\uc704\uae30 \ub610\ub294 \uc911\uc131 \uc5fc\uc695\uc5d0\uc11c \uac00\uc5f4\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n      <h3>2\ub2e8\uacc4: 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \ubc0f \ub2f4\uae08\uc9c8<\/h3>\n      <p>After preheating, heat 420 steel to the common hardening temperature 954\u20131010\u00b0C \/ 1750\u20131850\u00b0F.<\/p>\n      <p>\uc815\ud655\ud55c \uc628\ub3c4\ub294 \ub2e8\uba74 \ud06c\uae30, \uc6a9\uad11\ub85c \uc0c1\ud0dc, \uc81c\uac15\uc5c5\uccb4 \ub370\uc774\ud130 \ubc0f \uc694\uad6c\ub418\ub294 \ucd5c\uc885 \uacbd\ub3c4\ub97c \uae30\uc900\uc73c\ub85c \uc120\ud0dd\ud574\uc57c \ud569\ub2c8\ub2e4. \ucd5c\ub300 \uacbd\ub3c4\uc640 \ub0b4\uc2dd\uc131\uc774 \uc694\uad6c\ub418\ub294 \uacbd\uc6b0\uc5d0\ub294 \ubc94\uc704\uc758 \uc0c1\ud55c\uac12\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc9c0\ub9cc, \uacfc\uc5f4\uc740 \uacb0\uc815\ub9bd \uc131\uc7a5, \ubcc0\ud615 \ubc0f \uade0\uc5f4 \uc704\ud5d8\uc744 \uc99d\uac00\uc2dc\ud0ac \uc218 \uc788\uc73c\ubbc0\ub85c \ud53c\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n      <p>\uc77c\ubc18\uc801\uc778 \uc5f4\ucc98\ub9ac \uc9c0\uce68\uc740 \ucd5c\ub300 \ub2e8\uba74 \ub450\uaed8 1\uc778\uce58\ub2f9 \uc57d 30\ubd84\uc785\ub2c8\ub2e4. \ubaa9\ud45c\ub294 \ub2e8\uba74 \uc804\uccb4\uc5d0 \uac78\uccd0 \uade0\uc77c\ud55c \uac00\uc5f4\uc744 \ub2ec\uc131\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uacfc\ub3c4\ud55c \uc5f4\ucc98\ub9ac\ub294 \uacb0\uacfc\ub97c \uac1c\uc120\ud558\uc9c0 \ubabb\ud560 \ubfd0 \uc544\ub2c8\ub77c \ub2f4\uae08\uc9c8 \uacfc\uc815\uc5d0\uc11c \ubd80\ud488\uc758 \uc548\uc815\uc131\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n      <p>\ub2f4\uadfc \ud6c4\uc5d0\ub294 \ubd80\ud488\uc744 \uae09\ub7ad\uc2dc\ucf1c\uc57c \ud569\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\ub2f4\uae08\uc9c8 \ubc29\ubc95<\/th><th>\ucd5c\uc801\uc758 \uc0ac\uc6a9 \uc6a9\ub3c4\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4.<\/th><th>\uc774\uc810<\/th><th>\uc8fc\uc758<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>\uacf5\uae30 \ub0c9\uac01<\/td><td>\ubcf5\uc7a1\ud558\uac70\ub098 \ubd88\uaddc\uce59\ud558\uac70\ub098 \uc815\ubc00\ud55c \ubd80\ud488<\/td><td>\ubcc0\ud615 \ubc0f \uade0\uc5f4 \uc704\ud5d8 \uac10\uc18c<\/td><td>\uc77c\ubd80 \uad6c\uac04\uc5d0\uc11c\ub294 \uc18d\ub3c4\uac00 \ub108\ubb34 \ub290\ub9b4 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc624\uc77c \ub2f4\uae08\uc9c8<\/td><td>\ub354 \ubb34\uac70\uc6b4 \ubd80\ubd84\uc774\ub098 \ub354 \uac15\ud55c \uacbd\ud654 \ubc18\uc751\uc774 \ud544\uc694\ud55c \ubd80\ud488<\/td><td>\ub354 \ube60\ub978 \ub0c9\uac01 \ubc0f \ub354 \ub192\uc740 \uacbd\ud654 \ubc18\uc751<\/td><td>\ubcc0\ud615 \ubc0f \uade0\uc5f4 \uc704\ud5d8 \uc99d\uac00<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>\ubcf5\uc7a1\ud55c \ud615\uc0c1\uc758 \uacbd\uc6b0 \uacf5\uae30 \ub2f4\uae08\uc9c8\uc774 \ub354 \uc548\uc804\ud55c \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4. \ub354 \ub192\uc740 \uacbd\ub3c4\uac00 \uc694\uad6c\ub418\uace0 \ubd80\ud488 \ud615\uc0c1\uc774 \ub354 \uac00\ud639\ud55c \ub2f4\uae08\uc9c8\uc744 \uacac\ub51c \uc218 \uc788\ub294 \uacbd\uc6b0\uc5d0\ub294 \uc624\uc77c \ub2f4\uae08\uc9c8\uc744 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n      <p>\ub0c9\uac01\uc740 \uc784\uacc4 \uc628\ub3c4 \ubc94\uc704\uc5d0\uc11c \ucda9\ubd84\ud788 \ube60\ub974\uac8c \uc774\ub8e8\uc5b4\uc838\uc57c \ud558\uba70, \uadf8\ub807\uc9c0 \uc54a\uc73c\uba74 \uacb0\uc815\ub9bd\uacc4\uc5d0\uc11c \uc720\ud574\ud55c \ud0c4\ud654\ubb3c \uc11d\ucd9c\uc774 \ubc1c\uc0dd\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub0c9\uac01 \uc18d\ub3c4\uac00 \ub290\ub9ac\uba74 \ub0b4\uc2dd\uc131\uc774 \uc800\ud558\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \ud6c4\uc5d0\ub294 \uac00\ub2a5\ud55c \ud55c \ube68\ub9ac \ud15c\ud37c\ub9c1 \ucc98\ub9ac\ub97c \ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n      <h3>3\ub2e8\uacc4: 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac<\/h3>\n      <p>\ub192\uc740 \uacbd\ub3c4, \ub0b4\ub9c8\ubaa8\uc131, \uc5f0\ub9c8\uc131 \ubc0f \ub0b4\uc2dd\uc131\uc744 \uc5bb\uc73c\ub824\uba74 \uc77c\ubc18\uc801\uc73c\ub85c \ub0ae\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uac00 \uc120\ud638\ub429\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\ud15c\ud37c\ub9c1 \uc628\ub3c4<\/th><th>\ub300\ub7b5\uc801\uc778 \uacbd\ub3c4<\/th><th>\uc2e4\uc9c8\uc801\uc778 \uc758\ubbf8<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>150\u00b0C \/ 300\u00b0F<\/td><td>\ucd5c\uc18c 52 HRC \uc815\ub3c4<\/td><td>\ub192\uc740 \uacbd\ub3c4\uc640 \ub0a0 \uc720\uc9c0\ub825<\/td><\/tr>\n            <tr><td>204\u00b0C \/ 400\u00b0F<\/td><td>\ucd5c\uc18c 50 HRC \uc815\ub3c4<\/td><td>\uc77c\ubc18\uc801\uc778 \uacbd\ud654 \ubd80\ud488\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uc800\uc628 \ud15c\ud37c\ub9c1<\/td><\/tr>\n            <tr><td>250\u00b0C \/ 480\u00b0F<\/td><td>\uacbd\ub3c4 50HRC \uc774\uc0c1\uc778 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/td><td>\uc5f0\ub9c8\uc131 \ubc0f \ub0b4\uc2dd\uc131\uc774 \uc911\uc694\ud55c \uacbd\uc6b0\uc5d0 \uc8fc\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>316\u00b0C \/ 600\u00b0F<\/td><td>\ucd5c\uc18c 48 HRC \uc815\ub3c4<\/td><td>\uacbd\ub3c4\ub294 \ub0ae\ucd94\uace0 \uc778\uc131\uc740 \ud5a5\uc0c1\uc2dc\ucf30\uc2b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>593\u00b0C \/ 1100\u00b0F and above<\/td><td>\ub0ae\uc740 \uacbd\ub3c4<\/td><td>\uacbd\ub3c4\ubcf4\ub2e4 \uc778\uc131\uc774 \ub354 \uc911\uc694\ud560 \ub54c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>\uc774\uc911 \ud15c\ud37c\ub9c1\uc740 \uc911\uc694\ud55c 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \ubd80\ud488\uc5d0 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ud15c\ud37c\ub9c1 \uc8fc\uae30 \uc0ac\uc774\uc5d0 \ubd80\ud488\uc744 \uc2e4\uc628\uc73c\ub85c \ub0c9\uac01\ud574\uc57c \ud569\ub2c8\ub2e4. \uc774\ub294 \ub0b4\ubd80 \uc751\ub825\uc744 \uc644\ud654\ud558\uace0 \uce58\uc218 \uc548\uc815\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\ub294 \ub370 \ub3c4\uc6c0\uc774 \ub429\ub2c8\ub2e4.<\/p>\n      <p>The range around 427\u2013566\u00b0C \/ 800\u20131050\u00b0F should generally be avoided. Tempering in this range can reduce impact strength and corrosion resistance. If a softer, tougher condition is required, the tempering temperature is usually raised to about 593\u00b0C \/ 1100\u00b0F or higher, with a clear acceptance of lower hardness.<\/p>\n\n      <h2>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac \ucc28\ud2b8<\/h2>\n      <p>The work-hardness of heat-treated 420 stainless steel is typically around 46\u201352 HRC. Final hardness depends on austenitizing temperature, quenching speed, tempering temperature, section size, and steel condition.<\/p>\n      <p>\uc544\ub798 \ud45c\ub294 \uc2e4\uc81c \ucc38\uace0 \uc790\ub8cc\ub85c \uc0ac\uc6a9\ud574\uc57c \ud558\uba70, \ucd5c\uc885 \uacbd\ub3c4 \uac12\uc744 \ubcf4\uc7a5\ud558\ub294 \uc790\ub8cc\ub85c \uac04\uc8fc\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\ud15c\ud37c\ub9c1 \uc628\ub3c4<\/th><th>\ub300\ub7b5\uc801\uc778 \uacbd\ub3c4<\/th><th>\uc77c\ubc18\uc801\uc778 \ubc29\ud5a5<\/th><th>\uc8fc\uc694 \uc8fc\uc758\uc0ac\ud56d<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>150\u00b0C \/ 300\u00b0F<\/td><td>\ucd5c\uc18c 52 HRC \uc815\ub3c4<\/td><td>\ub192\uc740 \uacbd\ub3c4, \ub0a0 \uc720\uc9c0\ub825, \ub0b4\ub9c8\ubaa8\uc131<\/td><td>\ub0ae\uc740 \uc778\uc131<\/td><\/tr>\n            <tr><td>204\u00b0C \/ 400\u00b0F<\/td><td>\ucd5c\uc18c 50 HRC \uc815\ub3c4<\/td><td>\uc77c\ubc18\uc801\uc778 \uace0\uacbd\ub3c4 \uc801\uc6a9 \ubd84\uc57c<\/td><td>\uc801\uc808\ud55c \ub2f4\uae08\uc9c8\uc774 \ud544\uc694\ud569\ub2c8\ub2e4<\/td><\/tr>\n            <tr><td>250\u00b0C \/ 480\u00b0F<\/td><td>\uacbd\ub3c4 50HRC \uc774\uc0c1\uc778 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/td><td>\ud50c\ub77c\uc2a4\ud2f1 \uae08\ud615, \uc5f0\ub9c8 \ubd80\ud488, \ub0b4\uc2dd\uc131 \uacbd\ud654 \ubd80\ud488<\/td><td>\ucd5c\uc885 \uacbd\ub3c4\ub294 \uc0ac\uc804 \uacbd\ud654\uc5d0 \ub530\ub77c \ub2ec\ub77c\uc9d1\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>316\u00b0C \/ 600\u00b0F<\/td><td>\ucd5c\uc18c 48 HRC \uc815\ub3c4<\/td><td>\uc801\ub2f9\ud55c \uacbd\ub3c4\uc640 \ub6f0\uc5b4\ub09c \uc778\uc131<\/td><td>\uacbd\ub3c4\uac00 \ub5a8\uc5b4\uc9c0\uae30 \uc2dc\uc791\ud569\ub2c8\ub2e4<\/td><\/tr>\n            <tr><td>400\u2013450\u00b0C \/ 750\u2013840\u00b0F<\/td><td>\uc77c\ubd80 \uc2a4\ud504\ub9c1 \ud15c\ud37c\uc5d0\uc11c\ub294 \uc57d 450 HB \ub610\ub294 \uc57d 47 HRC \uc815\ub3c4\uc785\ub2c8\ub2e4.<\/td><td>\ud2b9\ubcc4\ud55c \uc0d8\ubb3c \ub610\ub294 \ubd80\ub3d9\uc0b0 \uc694\uac74<\/td><td>\uc77c\ubc18\uc801\uc778 \uc5f4\ucc98\ub9ac \ubc94\uc704\ub85c \uc0ac\uc6a9\ud574\uc11c\ub294 \uc548 \ub429\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>427\u2013566\u00b0C \/ 800\u20131050\u00b0F<\/td><td>\uc77c\ubc18\uc801\uc73c\ub85c \ud53c\ud568<\/td><td>\ub300\ubd80\ubd84\uc758 \uc6a9\ub3c4\uc5d0\ub294 \uad8c\uc7a5\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4.<\/td><td>\ucda9\uaca9 \uac15\ub3c4 \ubc0f \ub0b4\uc2dd\uc131\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>593\u00b0C \/ 1100\u00b0F and above<\/td><td>\ub0ae\uc740 \uacbd\ub3c4<\/td><td>\ub354 \ub192\uc740 \uc778\uc131\uc774 \uc694\uad6c\ub418\ub294 \uc751\uc6a9 \ubd84\uc57c<\/td><td>\uacbd\ub3c4 \uc190\uc2e4\uc774 \uc0c1\ub2f9\ud568<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>50 HRC \uc774\uc0c1\uc758 \uacbd\ub3c4\uc640 \uc6b0\uc218\ud55c \ub0b4\uc2dd\uc131\uc774 \uc694\uad6c\ub418\ub294 \uc6a9\ub3c4\uc5d0\ub294 \uc800\uc628 \ud15c\ud37c\ub9c1\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \ub354 \uc548\uc804\ud55c \uc120\ud0dd\uc785\ub2c8\ub2e4. \uc774\ub294 \ud50c\ub77c\uc2a4\ud2f1 \uae08\ud615, \uc808\uc0ad \uacf5\uad6c, \ub9c8\ubaa8 \ubd80\ud488, \uc5f0\ub9c8 \ubd80\ud488 \ubc0f \ubd80\uc2dd\uc5d0 \ub178\ucd9c\ub418\ub294 \ubd80\ud488\uc5d0 \ud754\ud788 \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n\n      <h2>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc5f4\ucc98\ub9ac \uc2dc \ud754\ud788 \ubc1c\uc0dd\ud558\ub294 \uc2e4\uc218<\/h2>\n      <p>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc5f4\ucc98\ub9ac \ubb38\uc81c \ub300\ubd80\ubd84\uc740 \uacf5\uc815 \uad00\ub9ac \ubd80\uc2e4\uc5d0\uc11c \ube44\ub86f\ub429\ub2c8\ub2e4. \uac00\uc7a5 \ud754\ud55c \uacb0\ud568\uc73c\ub85c\ub294 \ubcc0\ud615, \uade0\uc5f4, \uacbd\ub3c4 \ubd80\uc871, \ud45c\uba74 \ud488\uc9c8 \uc800\ud558, \ub0b4\uc2dd\uc131 \uac10\uc18c \ubc0f \uc778\uc131 \uc190\uc2e4 \ub4f1\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\uc2e4\uc218<\/th><th>\uacb0\uacfc<\/th><th>\ub354 \ub098\uc740 \uc2e4\ucc9c<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>\uba85\ud655\ud55c \ubd80\ub3d9\uc0b0 \ubaa9\ud45c \uc5c6\uc74c<\/td><td>\ub2f4\uae08\uc9c8 \ubc29\ud5a5\uc774 \uc798\ubabb\ub418\uc5c8\uc2b5\ub2c8\ub2e4<\/td><td>\uacbd\ub3c4, \uc778\uc131, \ub0b4\uc2dd\uc131, \uc5f0\ub9c8\uc131 \ub610\ub294 \uce58\uc218 \uc548\uc815\uc131 \uc911 \uc5b4\ub290 \uac83\uc744 \uc6b0\uc120\uc2dc\ud574\uc57c \ud558\ub294\uc9c0 \uc815\uc758\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ud45c\uba74 \uc138\ucc99 \ubd88\ub7c9<\/td><td>\ud45c\uba74 \uc190\uc0c1 \ub610\ub294 \ubd80\uc2dd \uc800\ud56d\uc131 \uc800\ud558<\/td><td>\uac00\uc5f4\ud558\uae30 \uc804\uc5d0 \uae30\ub984, \uadf8\ub9ac\uc2a4 \ubc0f \uc794\uc5ec\ubb3c\uc744 \uae68\ub057\uc774 \uc81c\uac70\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ubcf4\ud638 \ubd84\uc704\uae30 \uc5c6\uc74c<\/td><td>\uc2a4\ucf00\uc77c\ub9c1 \ub610\ub294 \ud0c8\ud0c4<\/td><td>\ud45c\uba74 \ud488\uc9c8\uc774 \uc911\uc694\ud55c \uacbd\uc6b0 \uc9c4\uacf5, \uc911\uc131 \ubd84\uc704\uae30 \ub610\ub294 \uc911\uc131 \uc5fc\uc695\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\uc608\uc5f4 \uc0dd\ub7b5<\/td><td>\ubcc0\ud615\uc774\ub098 \uade0\uc5f4 \ubc1c\uc0dd \uc704\ud5d8\uc774 \ub354 \ub192\uc74c<\/td><td>Preheat around 650\u00b0C \/ 1200\u00b0F before austenitizing<\/td><\/tr>\n            <tr><td>\ub2f4\uae08\uc9c8 \ubc29\ubc95\uc774 \uc798\ubabb\ub418\uc5c8\uc2b5\ub2c8\ub2e4<\/td><td>\uade0\uc5f4, \ubcc0\ud615 \ub610\ub294 \ubd88\ucda9\ubd84\ud55c \uacbd\ub3c4<\/td><td>\ub2e8\uba74 \ud06c\uae30\uc640 \ud615\uc0c1\uc5d0 \ub530\ub77c \uacf5\uae30 \ub610\ub294 \uc624\uc77c\uc744 \uc120\ud0dd\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ub0c9\uac01 \uc18d\ub3c4\uac00 \ub108\ubb34 \ub290\ub9bc<\/td><td>\ubd80\uc2dd \uc800\ud56d\uc131 \uc800\ud558<\/td><td>\uc784\uacc4 \ubc94\uc704 \uc804\uccb4\uc5d0 \uac78\uccd0 \ub0c9\uac01\uc744 \uc81c\uc5b4\ud569\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\ub2f4\uae08\uc9c8 \uc9c0\uc5f0<\/td><td>\ub2f4\uae08\uc9c8 \uade0\uc5f4 \uc704\ud5d8<\/td><td>\ub2f4\uae08\uc9c8 \uc9c1\ud6c4 \ud15c\ud37c\ub9c1<\/td><\/tr>\n            <tr><td>\uc704\ud5d8 \ubc94\uc704\uc5d0\uc11c\uc758 \ub2e8\ub828<\/td><td>\ucda9\uaca9 \uac15\ub3c4 \ubc0f \ub0b4\uc2dd\uc131\uc774 \ub0ae\uc74c<\/td><td>Avoid about 427\u2013566\u00b0C \/ 800\u20131050\u00b0F unless a qualified procedure requires it<\/td><\/tr>\n            <tr><td>\uc911\uc694 \ubd80\ud488\uc5d0 \ub2e8\uc77c \uc628\ub3c4 \uc870\uc808 \uae30\ub2a5 \uc801\uc6a9<\/td><td>\uc2a4\ud2b8\ub808\uc2a4 \ud574\uc18c \ubc0f \uc548\uc815\uc131 \ud5a5\uc0c1<\/td><td>\uc815\ubc00 \ubd80\ud488\uc774\ub098 \uc911\uc694 \ubd80\ud488\uc5d0\ub294 \uc774\uc911 \uc5f4\ucc98\ub9ac\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ucd5c\ub300 \uacbd\ub3c4\ub9cc\uc744 \ucd94\uad6c\ud569\ub2c8\ub2e4<\/td><td>\ucde8\uc131 \ubd80\ud488 \ub610\ub294 \ubd80\uc2dd \ubc29\uc9c0 \uc131\ub2a5 \uc800\ud558<\/td><td>\uc5f4\ucc98\ub9ac \uc628\ub3c4\ub97c \uc6a9\ub3c4\uc5d0 \ub9de\uac8c \uc870\uc815\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>\uc2ec\uac01\ud55c \uc2e4\uc218 \uc911 \ud558\ub098\ub294 \ubaa8\ub4e0 \ubd80\ud488\uc5d0 \uc624\uc77c \ub2f4\uae08\uc9c8\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc624\uc77c \ub2f4\uae08\uc9c8\uc740 \uacbd\ud654 \ubc18\uc751\uc744 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc9c0\ub9cc, \ubcc0\ud615 \ubc0f \uade0\uc5f4 \ubc1c\uc0dd \uc704\ud5d8\ub3c4 \uc99d\uac00\uc2dc\ud0b5\ub2c8\ub2e4. \ubcf5\uc7a1\ud558\uac70\ub098 \ubd88\uaddc\uce59\ud55c \ubd80\ud488\uc758 \uacbd\uc6b0, \uacf5\uae30 \ub2f4\uae08\uc9c8\uc774 \ub354 \uc548\uc804\ud55c \uc120\ud0dd\uc778 \uacbd\uc6b0\uac00 \ub9ce\uc2b5\ub2c8\ub2e4.<\/p>\n      <p>\ud754\ud788 \uc800\uc9c0\ub974\ub294 \ub610 \ub2e4\ub978 \uc2e4\uc218\ub294 \ub0b4\uc2dd\uc131\uc744 \uace0\ub824\ud558\uc9c0 \uc54a\uace0 \uc778\uc131\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\uae30 \uc704\ud574 \uace0\uc628 \ud15c\ud37c\ub9c1 \ucc98\ub9ac\ub97c \ud558\ub294 \uac83\uc785\ub2c8\ub2e4. 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uacbd\uc6b0, \uace0\uc628 \ud15c\ud37c\ub9c1\uc740 \uacbd\ub3c4\ub97c \uac10\uc18c\uc2dc\ud0a4\uace0 \ub0b4\uc2dd\uc131\uc744 \uc800\ud558\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4. \ub192\uc740 \uacbd\ub3c4\uc640 \ub0b4\uc2dd\uc131\uc774 \ubaa8\ub450 \uc694\uad6c\ub418\ub294 \uacbd\uc6b0\uc5d0\ub294 \uc800\uc628 \ud15c\ud37c\ub9c1\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \uc120\ud638\ub429\ub2c8\ub2e4.<\/p>\n      <p>The most important risk zone is 427\u2013566\u00b0C (800\u20131050\u00b0F). This range should not be used casually. If the part needs higher toughness, the process should be designed around 593\u00b0C \/ 1100\u00b0F or above, with the understanding that hardness will drop.<\/p>\n\n      <h2>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uc6a9\ub3c4\ubcc4 \uc5f4\ucc98\ub9ac \ubc29\ud5a5<\/h2>\n      <p>420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc758 \uae30\ubcf8 \uacbd\ud654 \uacf5\uc815\uc740 \uc5ec\ub7ec \uc6a9\ub3c4\uc5d0\uc11c \uc720\uc0ac\ud558\uc9c0\ub9cc, \ud15c\ud37c\ub9c1 \uc628\ub3c4\ub294 \uc694\uad6c\ub418\ub294 \uc131\ub2a5\uc5d0 \ub530\ub77c \uc870\uc815\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n      <div class=\"aobo-table-wrap\">\n        <table class=\"aobo-table\">\n          <thead>\n            <tr><th>\uc560\ud50c\ub9ac\ucf00\uc774\uc158<\/th><th>\uc8fc\uc694 \uc694\uad6c \uc0ac\ud56d<\/th><th>\uc5f4\ucc98\ub9ac \ubc29\ud5a5<\/th><th>\uc2e4\uc6a9\uc801\uc778 \ucc38\uace0 \uc0ac\ud56d<\/th><\/tr>\n          <\/thead>\n          <tbody>\n            <tr><td>\uc2dd\uae30\ub958 \ubc0f \uce7c\ub0a0<\/td><td>\uacbd\ub3c4 \ubc0f \ub0a0 \uc720\uc9c0\ub825<\/td><td>\uc801\uc808\ud55c \uc624\uc2a4\ud14c\ub098\uc774\ud2b8\ud654 \ucc98\ub9ac \ud6c4 \ub2f4\uae08\uc9c8\ud558\uace0 \uc800\uc628 \ud15c\ud37c\ub9c1\uc744 \uc2e4\uc2dc\ud558\uc2ed\uc2dc\uc624.<\/td><td>\ub0a0\uce74\ub85c\uc6b4 \uc808\uc0ad\ub825\uc774 \uc694\uad6c\ub418\ub294 \uacbd\uc6b0 \uacfc\ub3c4\ud55c \uc5f4\ucc98\ub9ac \uc628\ub3c4\ub97c \ud53c\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\uc218\uc220 \ubc0f \uce58\uacfc \uae30\uad6c<\/td><td>\uacbd\ub3c4, \uc5f0\ub9c8\uc131, \ub0b4\uc2dd\uc131<\/td><td>\uc800\uc628 \uc5f4\ucc98\ub9ac \ubc0f \uc6b0\uc218\ud55c \ud45c\uba74 \ubcf4\ud638 \ucc98\ub9ac\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><td>\ud45c\uba74 \ud488\uc9c8\uc740 \ub9e4\uc6b0 \uc911\uc694\ud569\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\ud50c\ub77c\uc2a4\ud2f1 \uae08\ud615<\/td><td>\uc5f0\ub9c8\uc131, \uacbd\ub3c4, \ub0b4\uc2dd\uc131<\/td><td>Low-temperature tempering, often around 204\u2013250\u00b0C \/ 400\u2013480\u00b0F<\/td><td>\ub0b4\uc2dd\uc131\uc774 \uc911\uc694\ud558\ub2e4\uba74 \uace0\uc628 \uc5f4\ucc98\ub9ac\ub97c \ud53c\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ub9c8\ubaa8 \ubd80\ud488<\/td><td>\uacbd\ub3c4 \ubc0f \ub0b4\ub9c8\ubaa8\uc131<\/td><td>\uc644\uc804\ud788 \uacbd\ud654\uc2dc\ud0a8 \ud6c4 \ub0ae\uc740 \uc628\ub3c4 \ubc94\uc704\uc5d0\uc11c \ud15c\ud37c\ub9c1\ud558\uc2ed\uc2dc\uc624.<\/td><td>\uc778\uc131\uc774 \uc694\uad6c\ub418\ub294 \uacbd\uc6b0\uac00 \uc544\ub2c8\uba74 \uacbd\ub3c4\ub97c \ub0ae\ucd94\uc9c0 \ub9c8\uc2ed\uc2dc\uc624.<\/td><\/tr>\n            <tr><td>\ucd95, \uae30\uc5b4 \ubc0f \ub864\ub7ec<\/td><td>\uac15\ub3c4\uc640 \ub0b4\uad6c\uc131\uc758 \uade0\ud615<\/td><td>\uc6a9\ub3c4\uc5d0 \ub9de\ub294 \uc5f4\ucc98\ub9ac \uc628\ub3c4\ub97c \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><td>\ucd5c\ub300 \uacbd\ub3c4\uac00 \ud56d\uc0c1 \ucd5c\uc120\uc758 \ubaa9\ud45c\ub294 \uc544\ub2d9\ub2c8\ub2e4.<\/td><\/tr>\n            <tr><td>\uc2a4\ud504\ub9c1 \ub610\ub294 \ub354 \uacac\uace0\ud55c \ubd80\ud488<\/td><td>\ucd5c\ub300 \uacbd\ub3c4 \ub300\ube44 \uc778\uc131<\/td><td>\ub354 \ub192\uc740 \uc5f4\ucc98\ub9ac \uc628\ub3c4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/td><td>\uacbd\ub3c4\uac00 \ub0ae\uc544\uc9c8 \uac83\uc785\ub2c8\ub2e4<\/td><\/tr>\n            <tr><td>\ubcf5\uc7a1\ud55c \uc815\ubc00 \ubd80\ud488<\/td><td>\uce58\uc218 \uc548\uc815\uc131<\/td><td>\uc608\uc5f4\uc744 \uc2e0\uc911\ud558\uac8c \ud558\uace0, \uacf5\uae30 \ub2f4\uae08\uc9c8\uc744 \uace0\ub824\ud558\uba70, \uc774\uc911 \ud15c\ud37c\ub9c1\uc744 \uc0ac\uc6a9\ud558\uc2ed\uc2dc\uc624.<\/td><td>\uade0\uc5f4 \uc704\ud5d8\uc774 \ub192\uc744 \uacbd\uc6b0 \uae09\uaca9\ud55c \ub0c9\uac01\uc744 \ud53c\ud558\uc2ed\uc2dc\uc624.<\/td><\/tr>\n          <\/tbody>\n        <\/table>\n      <\/div>\n      <p>\ud50c\ub77c\uc2a4\ud2f1 \uae08\ud615\uc5d0\ub294 \uacbd\ub3c4, \uc5f0\ub9c8\uc131 \ubc0f \ub0b4\uc2dd\uc131\uc774 \uc6b0\uc218\ud55c 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \uc790\uc8fc \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \uc774 \uacbd\uc6b0 \uc800\uc628 \ud15c\ud37c\ub9c1\uc774 \uc77c\ubc18\uc801\uc73c\ub85c \uc120\ud638\ub429\ub2c8\ub2e4. \uace0\uc628 \ud15c\ud37c\ub9c1\ub3c4 \uae30\uacc4\uc801 \ud2b9\uc131\uc740 \uc720\uc9c0\ud560 \uc218 \uc788\uc9c0\ub9cc \ub0b4\uc2dd\uc131\uc774 \uc800\ud558\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n      <p>\uce7c\ub0a0\uc774\ub098 \ub9c8\ubaa8 \ubd80\ud488\uc758 \uacbd\uc6b0, \uacbd\ub3c4\uc640 \ub0a0 \uc720\uc9c0\ub825\uc774 \uc8fc\uc694 \ubaa9\ud45c\uc785\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \ub0ae\uc740 \ud15c\ud37c\ub9c1 \uc628\ub3c4\uac00 \uc0ac\uc6a9\ub429\ub2c8\ub2e4. \ud558\uc9c0\ub9cc \uc0ac\uc6a9 \uc911 \ubd80\ud488\uc5d0 \uade0\uc5f4\uc774\ub098 \ud30c\uc190\uc774 \ubc1c\uc0dd\ud560 \uacbd\uc6b0, \ub2e8\uc21c\ud788 \uacbd\ub3c4\ub97c \ub192\uc774\ub294 \uac83\ub9cc\uc73c\ub85c\ub294 \ud574\uacb0\ucc45\uc774 \ub420 \uc218 \uc5c6\uc2b5\ub2c8\ub2e4. \ub2f4\uae08\uc9c8 \ubc29\ubc95, \ud15c\ud37c\ub9c1 \uc628\ub3c4, \ubd80\ud488 \uc124\uacc4, \uadf8\ub9ac\uace0 \uc0ac\uc6a9 \ud558\uc911 \ub4f1\uc744 \uc885\ud569\uc801\uc73c\ub85c \uac80\ud1a0\ud574\uc57c \ud569\ub2c8\ub2e4.<\/p>\n      <p>\ucd95, \uae30\uc5b4, \ub864\ub7ec \ubc0f \ud558\uc911\uc744 \ubc1b\ub294 \uae30\uacc4 \ubd80\ud488\uc758 \uacbd\uc6b0 \ucd5c\ub300 \uacbd\ub3c4\ub97c \ubaa9\ud45c\ub85c \ud558\ub294 \uac83\uc774 \ucd5c\uc120\uc758 \uc120\ud0dd\uc774 \uc544\ub2d0 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubd80\ud488\uc5d0\ub294 \uacbd\ub3c4\uc640 \uc778\uc131\uc758 \uade0\ud615\uc774 \ub354 \uc911\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc5f4\ucc98\ub9ac\ub294 \ub2e8\uc21c\ud788 \uac00\ub2a5\ud55c \ucd5c\uace0 HRC \uac12\uc5d0 \ub9de\ucd94\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uc2e4\uc81c \ud558\uc911 \uc870\uac74\uc5d0 \ub9de\ucdb0\uc57c \ud569\ub2c8\ub2e4.<\/p>\n\n      <div class=\"aobo-note-box\">\n        <p><em>\uc544\uc624\ubcf4 \uc2a4\ud2f8\uc740 \ucd5c\uc885 \uacbd\ud654 \ub610\ub294 \uc5f4\ucc98\ub9ac \uacf5\uc815\uc744 \uc81c\uacf5\ud558\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub2f9\uc0ac\ub294 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 \uc18c\uc7ac\ub97c \uacf5\uae09\ud558\uba70, \uace0\uac1d \ub610\ub294 \uc790\uaca9\uc744 \uac16\ucd98 \uc5f4\ucc98\ub9ac \uc5c5\uccb4\uc5d0\uc11c \uac00\uacf5 \ubc0f \ud6c4\uc18d \uc5f4\ucc98\ub9ac\ub97c \uc9c4\ud589\ud574\uc57c \ud569\ub2c8\ub2e4.<\/em><\/p>\n        <p><em>\ubcf8 \uc548\ub0b4\uc11c\uc758 \uc5f4\ucc98\ub9ac \ub370\uc774\ud130\ub294 \uace0\uac1d, \uacf5\uad6c \uc81c\uc791\uc790 \ubc0f \uc5f4\ucc98\ub9ac \uc804\ubb38\uac00\ub97c \uc704\ud55c \uae30\uc220 \ucc38\uace0 \uc790\ub8cc\ub85c \uc81c\uacf5\ub429\ub2c8\ub2e4.<\/em><\/p>\n      <\/div>\n    <\/main>\n\n    <section class=\"aobo-final-cta\">\n      <div>\n        <h2>\uacbd\ud654 \ubd80\ud488\uc5d0 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc774 \ud544\uc694\ud558\uc2e0\uac00\uc694?<\/h2>\n        <p>\uc544\uc624\ubcf4 \uc2a4\ud2f8\uc740 \uae08\ud615, \ube14\ub808\uc774\ub4dc, \uc0e4\ud504\ud2b8, \ub9c8\ubaa8 \ubd80\ud488 \ubc0f \uc815\ubc00 \ubd80\ud488\uc6a9 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15\uc744 \uacf5\uae09\ud569\ub2c8\ub2e4. \ub300\ub7c9 \uacf5\uae09\uc744 \uc6d0\ud558\uc2dc\uba74 \ud544\uc694\ud55c \ud06c\uae30, \uc218\ub7c9 \ubc0f \ud45c\uba74 \ucc98\ub9ac \uc870\uac74\uc744 \ubcf4\ub0b4\uc8fc\uc2ed\uc2dc\uc624.<\/p>\n      <\/div>\n      <div class=\"aobo-cta-buttons\">\n        <a class=\"aobo-btn aobo-btn-detail\" href=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel\/\">\ubdf0 420 \uc2a4\ud14c\uc778\ub9ac\uc2a4 \uc2a4\ud2f8<\/a>\n        <a class=\"aobo-btn popmake-16052\" href=\"javascript:void(0);\">\ubb38\uc758 \ubcf4\ub0b4\uae30<\/a>\n      <\/div>\n    <\/section>\n  <\/div>\n<\/section>\n\n\n\n\n<ul class=\"wp-block-yoast-seo-related-links yoast-seo-related-links\">\n<li><a href=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel\/\">420 \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15 | 1.2083 | 2Cr13<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/m2-tool-steel\/\">M2 \uacf5\uad6c\uac15 | 1.3343 | SKH51<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/o2-tool-steel\/\">O2 \uacf5\uad6c\uac15 | 1.2842<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/440c-stainless-steel\/\">440C \uc2a4\ud14c\uc778\ub9ac\uc2a4\uac15(1.4125 \/ SUS440C) \uacf5\uae09\uc5c5\uccb4 | \uc6d0\ud615 \ubd09 \ubc0f \ud310\uc7ac \ub300\ub7c9 \uacf5\uae09<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/h13-steel-hardness\/\">H13\uac15 \uacbd\ub3c4: HRC \ubc94\uc704, \ud15c\ud37c\ub9c1 \ucc28\ud2b8 \ubc0f \uc801\uc6a9 \ubd84\uc57c<\/a><\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"<p>420 Stainless Steel Heat Treatment Guide 420 Stainless Steel Heat Treatment Guide To heat treat 420 stainless steel, preheat to about 650\u00b0C \/ 1200\u00b0F, then austenitize at 954\u20131010\u00b0C \/ 1750\u20131850\u00b0F, followed by air or oil quenching. After quenching, temper immediately according to the required hardness, toughness, and corrosion resistance. For high-hardness applications, 420 stainless steel [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15291,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"normal-width-container","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-15288","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.9 (Yoast SEO v27.9) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>420 Steel Heat Treatment Guide | Hardening, Quenching &amp; Tempering<\/title>\n<meta name=\"description\" content=\"Step-by-step 420 stainless steel heat treatment guide covering preheating, austenitizing, air or oil quenching, tempering chart, and 46\u201352 HRC hardness range.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel-heat-treatment\/\" \/>\n<meta property=\"og:locale\" content=\"ko_KR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"420 Steel Heat Treatment Guide | Hardening, Quenching &amp; Tempering\" \/>\n<meta property=\"og:description\" content=\"Step-by-step 420 stainless steel heat treatment guide covering preheating, austenitizing, air or oil quenching, tempering chart, and 46\u201352 HRC hardness range.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/aobosteel.com\/ko\/420-stainless-steel-heat-treatment\/\" \/>\n<meta property=\"og:site_name\" content=\"AoboSteel\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/profile.php?id=61565368220197\" \/>\n<meta property=\"article:modified_time\" content=\"2026-06-25T02:02:03+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2026\/05\/420-heat-treatment-ad.avif\" \/>\n\t<meta property=\"og:image:width\" content=\"1254\" \/>\n\t<meta property=\"og:image:height\" content=\"1254\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\uc608\uc0c1 \ub418\ub294 \ud310\ub3c5 \uc2dc\uac04\" \/>\n\t<meta name=\"twitter:data1\" content=\"10\ubd84\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel-heat-treatment\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/aobosteel.com\\\/420-stainless-steel-heat-treatment\\\/\"},\"author\":{\"name\":\"Evan\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/#\\\/schema\\\/person\\\/96118415c30ca6bb52eaf1127b052ef7\"},\"headline\":\"420 Steel Heat Treatment Guide | Hardening, Quenching &amp; 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