{"id":12304,"date":"2026-01-19T20:32:42","date_gmt":"2026-01-19T12:32:42","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12304"},"modified":"2026-10-21T20:18:03","modified_gmt":"2026-10-21T12:18:03","slug":"tool-steel-hardness-conversion-calculator","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/pt\/tool-steel-hardness-conversion-calculator\/","title":{"rendered":"Calculadora de convers\u00e3o de dureza de a\u00e7o ferramenta (HRC, HV, HBW, HRB)"},"content":{"rendered":"\n\n<h1 id=\"h-tool-steel-hardness-conversion-calculator\" class=\"wp-block-heading has-text-align-center\">Tool Steel Hardness Conversion Calculator<\/h1>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Enter any hardness value and the calculator returns the nearest equivalents across the Rockwell C, Rockwell B, Vickers, and Brinell scales. It is built for the readings that do not have a ready answer, such as turning a single Vickers number from a test report into HRC, or checking a Brinell supply limit against a drawing called out in Rockwell. The conversion data follow ASTM E140 for non-austenitic steels. As a quick reference point, 60 HRC is close to 697 HV and about 654 HBW.<\/p>\n\n\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-76bdfc9e wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:22px;padding-right:22px;padding-bottom:22px;padding-left:22px\">\n\n\n\n<h2 id=\"h-hardened-tool-steel-hrc-range\" class=\"wp-block-heading\">Hardened Tool Steel \/ HRC Range<\/h2>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Use this range for hardened and tempered tool steels, including D2, A2, O1, S7, H11, H13, M2, M35, and M42. Valid input ranges: HRC 20-68, HV 238-940, HBW 226-739, HBS 226-500.<\/p>\n\n\n\n\n\n<div class=\"hc hc-wrap\" id=\"hc-hard\">\n\n<style data-noptimize=\"1\">\n#hc-hard{--hc-border:#dfe5ee;--hc-blue:#0c56d0;--hc-text:#333;--hc-muted:#6b7280}\n#hc-hard .hc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}\n@media(max-width:600px){#hc-hard .hc-grid{grid-template-columns:1fr}}\n#hc-hard .hc-field{display:block;margin:0;padding:0}\n#hc-hard .hc-field span{display:block;font-size:13px;font-weight:600;color:var(--hc-text);margin:0 0 4px;line-height:1.3}\n#hc-hard input[type=number]{width:100%!important;box-sizing:border-box!important;height:40px!important;min-height:40px!important;max-width:100%!important;padding:6px 10px!important;margin:0!important;border:1px solid var(--hc-border)!important;border-radius:4px!important;background:#fff!important;color:var(--hc-text)!important;font-size:15px!important;line-height:1.3!important;box-shadow:none!important;-webkit-appearance:none;appearance:textfield}\n#hc-hard input[type=number]:focus{border-color:var(--hc-blue)!important;outline:2px solid rgba(12,86,208,.14)!important;outline-offset:0}\n#hc-hard input.is-active{border-color:var(--hc-blue)!important;background:#f4f8ff!important}\n#hc-hard input.is-invalid{border-color:#dc2626!important;background:#fef2f2!important}\n#hc-hard input.is-notlisted::placeholder{color:#b45309;opacity:1}\n#hc-hard .hc-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:18px}\n#hc-hard button.hc-secondary{background:#fff;color:#333;border:1px solid #dfe5ee}\n#hc-hard button.hc-secondary:hover{background:#f1f5f9;color:#333;border-color:#cbd5e1}\n#hc-hard .hc-note{margin-top:14px;padding:10px 12px;border:1px solid var(--hc-border);border-radius:4px;background:#f8fafc;color:var(--hc-muted);font-size:13px;line-height:1.6}\n#hc-hard .hc-note.is-error{border-color:#fca5a5;background:#fef2f2;color:#991b1b}\n<\/style>\n\n<div class=\"hc-grid\"><label class=\"hc-field\" for=\"hard-hrc\"><span>HRC<\/span><input id=\"hard-hrc\" data-scale=\"hrc\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 60\"><\/label><label class=\"hc-field\" for=\"hard-hv\"><span>HV<\/span><input id=\"hard-hv\" data-scale=\"hv\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 697\"><\/label><label class=\"hc-field\" for=\"hard-hbw\"><span>HBW<\/span><input id=\"hard-hbw\" data-scale=\"hbw\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 654\"><\/label><label class=\"hc-field\" for=\"hard-hbs\"><span>HBS<\/span><input id=\"hard-hbs\" data-scale=\"hbs\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 371\"><\/label><\/div>\n\n<div class=\"hc-actions\"><button type=\"button\" id=\"hard-calculate\">Calculate<\/button><button type=\"button\" class=\"hc-secondary\" id=\"hard-reset\">Reset<\/button><\/div>\n\n<div class=\"hc-note\" id=\"hard-note\">Enter one value above. The calculator uses the last edited field as the input source.<\/div>\n\n<script>\n(function () {\n  var ROOT = \"hc-hard\";\n  var DEFAULTS = {\"hard-hrc\": \"Example: 60\", \"hard-hv\": \"Example: 697\", \"hard-hbw\": \"Example: 654\", \"hard-hbs\": \"Example: 371\"};\n  var NOT_LISTED = \"Not listed in source table\";\n  var DATA = [{\"hrc\":68,\"hv\":940,\"hbs\":null,\"hbw\":null},{\"hrc\":67,\"hv\":900,\"hbs\":null,\"hbw\":null},{\"hrc\":66,\"hv\":865,\"hbs\":null,\"hbw\":null},{\"hrc\":65,\"hv\":832,\"hbs\":null,\"hbw\":739},{\"hrc\":64,\"hv\":800,\"hbs\":null,\"hbw\":722},{\"hrc\":63,\"hv\":772,\"hbs\":null,\"hbw\":705},{\"hrc\":62,\"hv\":746,\"hbs\":null,\"hbw\":688},{\"hrc\":61,\"hv\":720,\"hbs\":null,\"hbw\":670},{\"hrc\":60,\"hv\":697,\"hbs\":null,\"hbw\":654},{\"hrc\":59,\"hv\":674,\"hbs\":null,\"hbw\":634},{\"hrc\":58,\"hv\":653,\"hbs\":null,\"hbw\":615},{\"hrc\":57,\"hv\":633,\"hbs\":null,\"hbw\":595},{\"hrc\":56,\"hv\":613,\"hbs\":null,\"hbw\":577},{\"hrc\":55,\"hv\":595,\"hbs\":null,\"hbw\":560},{\"hrc\":54,\"hv\":577,\"hbs\":null,\"hbw\":543},{\"hrc\":53,\"hv\":560,\"hbs\":null,\"hbw\":525},{\"hrc\":52,\"hv\":544,\"hbs\":500,\"hbw\":512},{\"hrc\":51,\"hv\":528,\"hbs\":487,\"hbw\":496},{\"hrc\":50,\"hv\":513,\"hbs\":475,\"hbw\":481},{\"hrc\":49,\"hv\":498,\"hbs\":464,\"hbw\":469},{\"hrc\":48,\"hv\":484,\"hbs\":451,\"hbw\":455},{\"hrc\":47,\"hv\":471,\"hbs\":442,\"hbw\":443},{\"hrc\":46,\"hv\":458,\"hbs\":432,\"hbw\":432},{\"hrc\":45,\"hv\":446,\"hbs\":421,\"hbw\":421},{\"hrc\":44,\"hv\":434,\"hbs\":409,\"hbw\":409},{\"hrc\":43,\"hv\":423,\"hbs\":400,\"hbw\":400},{\"hrc\":42,\"hv\":412,\"hbs\":390,\"hbw\":390},{\"hrc\":41,\"hv\":402,\"hbs\":381,\"hbw\":381},{\"hrc\":40,\"hv\":392,\"hbs\":371,\"hbw\":371},{\"hrc\":39,\"hv\":382,\"hbs\":362,\"hbw\":362},{\"hrc\":38,\"hv\":372,\"hbs\":353,\"hbw\":353},{\"hrc\":37,\"hv\":363,\"hbs\":344,\"hbw\":344},{\"hrc\":36,\"hv\":354,\"hbs\":336,\"hbw\":336},{\"hrc\":35,\"hv\":345,\"hbs\":327,\"hbw\":327},{\"hrc\":34,\"hv\":336,\"hbs\":319,\"hbw\":319},{\"hrc\":33,\"hv\":327,\"hbs\":311,\"hbw\":311},{\"hrc\":32,\"hv\":318,\"hbs\":301,\"hbw\":301},{\"hrc\":31,\"hv\":310,\"hbs\":294,\"hbw\":294},{\"hrc\":30,\"hv\":302,\"hbs\":286,\"hbw\":286},{\"hrc\":29,\"hv\":294,\"hbs\":279,\"hbw\":279},{\"hrc\":28,\"hv\":286,\"hbs\":271,\"hbw\":271},{\"hrc\":27,\"hv\":279,\"hbs\":264,\"hbw\":264},{\"hrc\":26,\"hv\":272,\"hbs\":258,\"hbw\":258},{\"hrc\":25,\"hv\":266,\"hbs\":253,\"hbw\":253},{\"hrc\":24,\"hv\":260,\"hbs\":247,\"hbw\":247},{\"hrc\":23,\"hv\":254,\"hbs\":243,\"hbw\":243},{\"hrc\":22,\"hv\":248,\"hbs\":237,\"hbw\":237},{\"hrc\":21,\"hv\":243,\"hbs\":231,\"hbw\":231},{\"hrc\":20,\"hv\":238,\"hbs\":226,\"hbw\":226}];\n  var RULES = {\"hrc\":{\"min\":20,\"max\":68,\"label\":\"HRC\"},\"hv\":{\"min\":238,\"max\":940,\"label\":\"HV\"},\"hbw\":{\"min\":226,\"max\":739,\"label\":\"HBW\"},\"hbs\":{\"min\":226,\"max\":500,\"label\":\"HBS\"}};\n  var LAST = \"hrc\";\n  var root = document.getElementById(ROOT);\n\n  function field(scale) { return root.querySelector('input[data-scale=\"' + scale + '\"]'); }\n  function fields() { return root.querySelectorAll(\"input[data-scale]\"); }\n  function noteEl() { return document.getElementById(\"hard-note\"); }\n\n  function resetPlaceholders() {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].placeholder = DEFAULTS[list[i].id] || \"\";\n      list[i].classList.remove(\"is-notlisted\");\n    }\n  }\n\n  function showValue(id, value) {\n    var el = document.getElementById(id);\n    if (!el) { return; }\n    el.value = \"\";\n    el.classList.remove(\"is-notlisted\");\n    if (value === null || value === undefined || value === \"\") {\n      el.placeholder = NOT_LISTED;\n      el.classList.add(\"is-notlisted\");\n      return;\n    }\n    el.value = String(value);\n    el.placeholder = DEFAULTS[id] || \"\";\n  }\n\n  function setActive(scale) {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].classList.remove(\"is-active\");\n      list[i].classList.remove(\"is-invalid\");\n    }\n    var a = field(scale);\n    if (a) { a.classList.add(\"is-active\"); }\n  }\n\n  function setNote(msg) {\n    var n = noteEl();\n    n.classList.remove(\"is-error\");\n    n.textContent = msg;\n  }\n\n  function setError(scale, msg) {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) { list[i].classList.remove(\"is-invalid\"); }\n    var a = field(scale);\n    if (a) { a.classList.add(\"is-invalid\"); }\n    var n = noteEl();\n    n.classList.add(\"is-error\");\n    n.textContent = msg;\n  }\n\n  function inRange(scale, v) {\n    var r = RULES[scale];\n    if (!r) { return true; }\n    return v >= r.min && v <= r.max;\n  }\n\n  function rangeMsg(scale) {\n    var r = RULES[scale];\n    if (!r) { return \"\"; }\n    return r.label + \" must be between \" + r.min + \" and \" + r.max + \" in the HRC range. For lower soft-condition values, use the HRB range calculator.\";\n  }\n\n  function nearest(scale, value) {\n    var best = null, bestDiff = Infinity;\n    for (var i = 0; i < DATA.length; i++) {\n      var v = DATA[i][scale];\n      if (v === null || v === undefined || v === \"\") { continue; }\n      var d = Math.abs(Number(v) - Number(value));\n      if (d < bestDiff) { bestDiff = d; best = DATA[i]; }\n    }\n    return best;\n  }\n\n  function clearAll() {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].value = \"\";\n      list[i].classList.remove(\"is-active\");\n      list[i].classList.remove(\"is-invalid\");\n      list[i].classList.remove(\"is-notlisted\");\n    }\n    resetPlaceholders();\n    LAST = \"hrc\";\n    setNote(\"Enter one value above. The calculator uses the last edited field as the input source.\");\n  }\n\n  function fill(row) { showValue(\"hard-hrc\", row.hrc); showValue(\"hard-hv\", row.hv); showValue(\"hard-hbw\", row.hbw); showValue(\"hard-hbs\", row.hbs); }\n\n  function calculate() {\n    var el = field(LAST);\n    var value = Number(el.value);\n    resetPlaceholders();\n    if (!el.value || isNaN(value)) {\n      setError(LAST, \"Enter a valid number in one HRC range field.\");\n      return;\n    }\n    if (!inRange(LAST, value)) {\n      setError(LAST, rangeMsg(LAST));\n      return;\n    }\n    var row = nearest(LAST, value);\n    if (!row) {\n      setError(LAST, \"No listed value is available for this input in the HRC range.\");\n      return;\n    }\n    fill(row);\n    setActive(LAST);\n    setNote(\"Input \" + value + \" \" + LAST.toUpperCase() + \" was matched to the nearest listed HRC-range row. If a field shows \\u201CNot listed in source table,\\u201D that value is not provided in the source table.\");\n  }\n\n  var all = fields();\n  for (var i = 0; i < all.length; i++) {\n    all[i].addEventListener(\"input\", function () {\n      LAST = this.getAttribute(\"data-scale\");\n      resetPlaceholders();\n      setActive(LAST);\n      noteEl().classList.remove(\"is-error\");\n    });\n    all[i].addEventListener(\"keydown\", function (e) {\n      if (e.key === \"Enter\") { e.preventDefault(); calculate(); }\n    });\n  }\n\n  document.getElementById(\"hard-calculate\").addEventListener(\"click\", calculate);\n  document.getElementById(\"hard-reset\").addEventListener(\"click\", clearAll);\n})();\n<\/script>\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-76bdfc9e wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:22px;padding-right:22px;padding-bottom:22px;padding-left:22px\">\n\n\n\n<h2 id=\"h-annealed-or-soft-steel-hrb-range\" class=\"wp-block-heading\">Annealed or Soft Steel \/ HRB Range<\/h2>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Use this range for annealed, normalized, or softer steel where HRC is not suitable. This range is useful when reviewing MTC hardness values or soft supply hardness. Valid input ranges: HRB 55-100, HV 100-240, HBS 100-240.<\/p>\n\n\n\n\n\n<div class=\"hc hc-wrap\" id=\"hc-soft\">\n\n<style data-noptimize=\"1\">\n#hc-soft{--hc-border:#dfe5ee;--hc-blue:#0c56d0;--hc-text:#333;--hc-muted:#6b7280}\n#hc-soft .hc-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}\n@media(max-width:600px){#hc-soft .hc-grid{grid-template-columns:1fr}}\n#hc-soft .hc-field{display:block;margin:0;padding:0}\n#hc-soft .hc-field span{display:block;font-size:13px;font-weight:600;color:var(--hc-text);margin:0 0 4px;line-height:1.3}\n#hc-soft input[type=number]{width:100%!important;box-sizing:border-box!important;height:40px!important;min-height:40px!important;max-width:100%!important;padding:6px 10px!important;margin:0!important;border:1px solid var(--hc-border)!important;border-radius:4px!important;background:#fff!important;color:var(--hc-text)!important;font-size:15px!important;line-height:1.3!important;box-shadow:none!important;-webkit-appearance:none;appearance:textfield}\n#hc-soft input[type=number]:focus{border-color:var(--hc-blue)!important;outline:2px solid rgba(12,86,208,.14)!important;outline-offset:0}\n#hc-soft input.is-active{border-color:var(--hc-blue)!important;background:#f4f8ff!important}\n#hc-soft input.is-invalid{border-color:#dc2626!important;background:#fef2f2!important}\n#hc-soft input.is-notlisted::placeholder{color:#b45309;opacity:1}\n#hc-soft .hc-actions{display:flex;gap:12px;flex-wrap:wrap;align-items:center;margin-top:18px}\n#hc-soft button.hc-secondary{background:#fff;color:#333;border:1px solid #dfe5ee}\n#hc-soft button.hc-secondary:hover{background:#f1f5f9;color:#333;border-color:#cbd5e1}\n#hc-soft .hc-note{margin-top:14px;padding:10px 12px;border:1px solid var(--hc-border);border-radius:4px;background:#f8fafc;color:var(--hc-muted);font-size:13px;line-height:1.6}\n#hc-soft .hc-note.is-error{border-color:#fca5a5;background:#fef2f2;color:#991b1b}\n<\/style>\n\n<div class=\"hc-grid\"><label class=\"hc-field\" for=\"soft-hrb\"><span>HRB<\/span><input id=\"soft-hrb\" data-scale=\"hrb\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 95\"><\/label><label class=\"hc-field\" for=\"soft-hv\"><span>HV<\/span><input id=\"soft-hv\" data-scale=\"hv\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 210\"><\/label><label class=\"hc-field\" for=\"soft-hbs\"><span>HBS<\/span><input id=\"soft-hbs\" data-scale=\"hbs\" type=\"number\" step=\"0.1\" inputmode=\"decimal\" placeholder=\"Example: 210\"><\/label><\/div>\n\n<div class=\"hc-actions\"><button type=\"button\" id=\"soft-calculate\">Calculate<\/button><button type=\"button\" class=\"hc-secondary\" id=\"soft-reset\">Reset<\/button><\/div>\n\n<div class=\"hc-note\" id=\"soft-note\">Enter one value above. The calculator uses the last edited field as the input source.<\/div>\n\n<script>\n(function () {\n  var ROOT = \"hc-soft\";\n  var DEFAULTS = {\"soft-hrb\": \"Example: 95\", \"soft-hv\": \"Example: 210\", \"soft-hbs\": \"Example: 210\"};\n  var NOT_LISTED = \"Not listed in source table\";\n  var DATA = [{\"hrb\":100,\"hv\":240,\"hbs\":240},{\"hrb\":99,\"hv\":234,\"hbs\":234},{\"hrb\":98,\"hv\":228,\"hbs\":228},{\"hrb\":97,\"hv\":222,\"hbs\":222},{\"hrb\":96,\"hv\":216,\"hbs\":216},{\"hrb\":95,\"hv\":210,\"hbs\":210},{\"hrb\":94,\"hv\":205,\"hbs\":205},{\"hrb\":93,\"hv\":200,\"hbs\":200},{\"hrb\":92,\"hv\":195,\"hbs\":195},{\"hrb\":91,\"hv\":190,\"hbs\":190},{\"hrb\":90,\"hv\":185,\"hbs\":185},{\"hrb\":89,\"hv\":180,\"hbs\":180},{\"hrb\":88,\"hv\":176,\"hbs\":176},{\"hrb\":87,\"hv\":172,\"hbs\":172},{\"hrb\":86,\"hv\":169,\"hbs\":169},{\"hrb\":85,\"hv\":165,\"hbs\":165},{\"hrb\":84,\"hv\":162,\"hbs\":162},{\"hrb\":83,\"hv\":159,\"hbs\":159},{\"hrb\":82,\"hv\":156,\"hbs\":156},{\"hrb\":81,\"hv\":153,\"hbs\":153},{\"hrb\":80,\"hv\":150,\"hbs\":150},{\"hrb\":79,\"hv\":147,\"hbs\":147},{\"hrb\":78,\"hv\":144,\"hbs\":144},{\"hrb\":77,\"hv\":141,\"hbs\":141},{\"hrb\":76,\"hv\":139,\"hbs\":139},{\"hrb\":75,\"hv\":137,\"hbs\":137},{\"hrb\":74,\"hv\":135,\"hbs\":135},{\"hrb\":73,\"hv\":132,\"hbs\":132},{\"hrb\":72,\"hv\":130,\"hbs\":130},{\"hrb\":71,\"hv\":127,\"hbs\":127},{\"hrb\":70,\"hv\":125,\"hbs\":125},{\"hrb\":69,\"hv\":123,\"hbs\":123},{\"hrb\":68,\"hv\":121,\"hbs\":121},{\"hrb\":67,\"hv\":119,\"hbs\":119},{\"hrb\":66,\"hv\":117,\"hbs\":117},{\"hrb\":65,\"hv\":116,\"hbs\":116},{\"hrb\":64,\"hv\":114,\"hbs\":114},{\"hrb\":63,\"hv\":112,\"hbs\":112},{\"hrb\":62,\"hv\":110,\"hbs\":110},{\"hrb\":61,\"hv\":108,\"hbs\":108},{\"hrb\":60,\"hv\":107,\"hbs\":107},{\"hrb\":59,\"hv\":106,\"hbs\":106},{\"hrb\":58,\"hv\":104,\"hbs\":104},{\"hrb\":57,\"hv\":103,\"hbs\":103},{\"hrb\":56,\"hv\":101,\"hbs\":101},{\"hrb\":55,\"hv\":100,\"hbs\":100}];\n  var RULES = {\"hrb\":{\"min\":55,\"max\":100,\"label\":\"HRB\"},\"hv\":{\"min\":100,\"max\":240,\"label\":\"HV\"},\"hbs\":{\"min\":100,\"max\":240,\"label\":\"HBS\"}};\n  var LAST = \"hrb\";\n  var root = document.getElementById(ROOT);\n\n  function field(scale) { return root.querySelector('input[data-scale=\"' + scale + '\"]'); }\n  function fields() { return root.querySelectorAll(\"input[data-scale]\"); }\n  function noteEl() { return document.getElementById(\"soft-note\"); }\n\n  function resetPlaceholders() {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].placeholder = DEFAULTS[list[i].id] || \"\";\n      list[i].classList.remove(\"is-notlisted\");\n    }\n  }\n\n  function showValue(id, value) {\n    var el = document.getElementById(id);\n    if (!el) { return; }\n    el.value = \"\";\n    el.classList.remove(\"is-notlisted\");\n    if (value === null || value === undefined || value === \"\") {\n      el.placeholder = NOT_LISTED;\n      el.classList.add(\"is-notlisted\");\n      return;\n    }\n    el.value = String(value);\n    el.placeholder = DEFAULTS[id] || \"\";\n  }\n\n  function setActive(scale) {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].classList.remove(\"is-active\");\n      list[i].classList.remove(\"is-invalid\");\n    }\n    var a = field(scale);\n    if (a) { a.classList.add(\"is-active\"); }\n  }\n\n  function setNote(msg) {\n    var n = noteEl();\n    n.classList.remove(\"is-error\");\n    n.textContent = msg;\n  }\n\n  function setError(scale, msg) {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) { list[i].classList.remove(\"is-invalid\"); }\n    var a = field(scale);\n    if (a) { a.classList.add(\"is-invalid\"); }\n    var n = noteEl();\n    n.classList.add(\"is-error\");\n    n.textContent = msg;\n  }\n\n  function inRange(scale, v) {\n    var r = RULES[scale];\n    if (!r) { return true; }\n    return v >= r.min && v <= r.max;\n  }\n\n  function rangeMsg(scale) {\n    var r = RULES[scale];\n    if (!r) { return \"\"; }\n    return r.label + \" must be between \" + r.min + \" and \" + r.max + \" in the HRB range. For hardened tool steel values, use the HRC range calculator.\";\n  }\n\n  function nearest(scale, value) {\n    var best = null, bestDiff = Infinity;\n    for (var i = 0; i < DATA.length; i++) {\n      var v = DATA[i][scale];\n      if (v === null || v === undefined || v === \"\") { continue; }\n      var d = Math.abs(Number(v) - Number(value));\n      if (d < bestDiff) { bestDiff = d; best = DATA[i]; }\n    }\n    return best;\n  }\n\n  function clearAll() {\n    var list = fields();\n    for (var i = 0; i < list.length; i++) {\n      list[i].value = \"\";\n      list[i].classList.remove(\"is-active\");\n      list[i].classList.remove(\"is-invalid\");\n      list[i].classList.remove(\"is-notlisted\");\n    }\n    resetPlaceholders();\n    LAST = \"hrb\";\n    setNote(\"Enter one value above. The calculator uses the last edited field as the input source.\");\n  }\n\n  function fill(row) { showValue(\"soft-hrb\", row.hrb); showValue(\"soft-hv\", row.hv); showValue(\"soft-hbs\", row.hbs); }\n\n  function calculate() {\n    var el = field(LAST);\n    var value = Number(el.value);\n    resetPlaceholders();\n    if (!el.value || isNaN(value)) {\n      setError(LAST, \"Enter a valid number in one HRB range field.\");\n      return;\n    }\n    if (!inRange(LAST, value)) {\n      setError(LAST, rangeMsg(LAST));\n      return;\n    }\n    var row = nearest(LAST, value);\n    if (!row) {\n      setError(LAST, \"No listed value is available for this input in the HRB range.\");\n      return;\n    }\n    fill(row);\n    setActive(LAST);\n    setNote(\"Input \" + value + \" \" + LAST.toUpperCase() + \" was matched to the nearest listed HRB-range row. If a field shows \\u201CNot listed in source table,\\u201D that value is not provided in the source table.\");\n  }\n\n  var all = fields();\n  for (var i = 0; i < all.length; i++) {\n    all[i].addEventListener(\"input\", function () {\n      LAST = this.getAttribute(\"data-scale\");\n      resetPlaceholders();\n      setActive(LAST);\n      noteEl().classList.remove(\"is-error\");\n    });\n    all[i].addEventListener(\"keydown\", function (e) {\n      if (e.key === \"Enter\") { e.preventDefault(); calculate(); }\n    });\n  }\n\n  document.getElementById(\"soft-calculate\").addEventListener(\"click\", calculate);\n  document.getElementById(\"soft-reset\").addEventListener(\"click\", clearAll);\n})();\n<\/script>\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-10ff9433 wp-block-group-is-layout-constrained\" style=\"background-color:#eef4ff;padding-top:16px;padding-right:16px;padding-bottom:16px;padding-left:16px\">\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">The values are approximate equivalents, not exact conversions. Use them for comparison and communication. For inspection, acceptance, or MTC confirmation, test hardness by the method specified in the order or standard.<\/p>\n\n\n\n<\/div>\n\n\n\n\n\n<h2 id=\"h-hrc-hardness-conversion-table-hardened-tool-steel\" class=\"wp-block-heading\">HRC Hardness Conversion Table \u2014 Hardened Tool Steel<\/h2>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Full conversion chart for Rockwell C (HRC) to Vickers (HV), Brinell steel ball (HBS), and Brinell tungsten carbide ball (HBW). Data based on ASTM E140 for non-austenitic steels.<\/p>\n\n\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr>\n\n<th>HRC<\/th><th>HV<\/th><th>HBS<\/th><th>HBW<\/th><\/tr><\/thead><tbody>\n\n<tr><td>68<\/td><td>940<\/td><td>&mdash;<\/td><td>&mdash;<\/td><\/tr>\n\n<tr><td>67<\/td><td>900<\/td><td>&mdash;<\/td><td>&mdash;<\/td><\/tr>\n\n<tr><td>66<\/td><td>865<\/td><td>&mdash;<\/td><td>&mdash;<\/td><\/tr>\n\n<tr><td>65<\/td><td>832<\/td><td>&mdash;<\/td><td>739<\/td><\/tr>\n\n<tr><td>64<\/td><td>800<\/td><td>&mdash;<\/td><td>722<\/td><\/tr>\n\n<tr><td>63<\/td><td>772<\/td><td>&mdash;<\/td><td>705<\/td><\/tr>\n\n<tr><td>62<\/td><td>746<\/td><td>&mdash;<\/td><td>688<\/td><\/tr>\n\n<tr><td>61<\/td><td>720<\/td><td>&mdash;<\/td><td>670<\/td><\/tr>\n\n<tr><td>60<\/td><td>697<\/td><td>&mdash;<\/td><td>654<\/td><\/tr>\n\n<tr><td>59<\/td><td>674<\/td><td>&mdash;<\/td><td>634<\/td><\/tr>\n\n<tr><td>58<\/td><td>653<\/td><td>&mdash;<\/td><td>615<\/td><\/tr>\n\n<tr><td>57<\/td><td>633<\/td><td>&mdash;<\/td><td>595<\/td><\/tr>\n\n<tr><td>56<\/td><td>613<\/td><td>&mdash;<\/td><td>577<\/td><\/tr>\n\n<tr><td>55<\/td><td>595<\/td><td>&mdash;<\/td><td>560<\/td><\/tr>\n\n<tr><td>54<\/td><td>577<\/td><td>&mdash;<\/td><td>543<\/td><\/tr>\n\n<tr><td>53<\/td><td>560<\/td><td>&mdash;<\/td><td>525<\/td><\/tr>\n\n<tr><td>52<\/td><td>544<\/td><td>500<\/td><td>512<\/td><\/tr>\n\n<tr><td>51<\/td><td>528<\/td><td>487<\/td><td>496<\/td><\/tr>\n\n<tr><td>50<\/td><td>513<\/td><td>475<\/td><td>481<\/td><\/tr>\n\n<tr><td>49<\/td><td>498<\/td><td>464<\/td><td>469<\/td><\/tr>\n\n<tr><td>48<\/td><td>484<\/td><td>451<\/td><td>455<\/td><\/tr>\n\n<tr><td>47<\/td><td>471<\/td><td>442<\/td><td>443<\/td><\/tr>\n\n<tr><td>46<\/td><td>458<\/td><td>432<\/td><td>432<\/td><\/tr>\n\n<tr><td>45<\/td><td>446<\/td><td>421<\/td><td>421<\/td><\/tr>\n\n<tr><td>44<\/td><td>434<\/td><td>409<\/td><td>409<\/td><\/tr>\n\n<tr><td>43<\/td><td>423<\/td><td>400<\/td><td>400<\/td><\/tr>\n\n<tr><td>42<\/td><td>412<\/td><td>390<\/td><td>390<\/td><\/tr>\n\n<tr><td>41<\/td><td>402<\/td><td>381<\/td><td>381<\/td><\/tr>\n\n<tr><td>40<\/td><td>392<\/td><td>371<\/td><td>371<\/td><\/tr>\n\n<tr><td>39<\/td><td>382<\/td><td>362<\/td><td>362<\/td><\/tr>\n\n<tr><td>38<\/td><td>372<\/td><td>353<\/td><td>353<\/td><\/tr>\n\n<tr><td>37<\/td><td>363<\/td><td>344<\/td><td>344<\/td><\/tr>\n\n<tr><td>36<\/td><td>354<\/td><td>336<\/td><td>336<\/td><\/tr>\n\n<tr><td>35<\/td><td>345<\/td><td>327<\/td><td>327<\/td><\/tr>\n\n<tr><td>34<\/td><td>336<\/td><td>319<\/td><td>319<\/td><\/tr>\n\n<tr><td>33<\/td><td>327<\/td><td>311<\/td><td>311<\/td><\/tr>\n\n<tr><td>32<\/td><td>318<\/td><td>301<\/td><td>301<\/td><\/tr>\n\n<tr><td>31<\/td><td>310<\/td><td>294<\/td><td>294<\/td><\/tr>\n\n<tr><td>30<\/td><td>302<\/td><td>286<\/td><td>286<\/td><\/tr>\n\n<tr><td>29<\/td><td>294<\/td><td>279<\/td><td>279<\/td><\/tr>\n\n<tr><td>28<\/td><td>286<\/td><td>271<\/td><td>271<\/td><\/tr>\n\n<tr><td>27<\/td><td>279<\/td><td>264<\/td><td>264<\/td><\/tr>\n\n<tr><td>26<\/td><td>272<\/td><td>258<\/td><td>258<\/td><\/tr>\n\n<tr><td>25<\/td><td>266<\/td><td>253<\/td><td>253<\/td><\/tr>\n\n<tr><td>24<\/td><td>260<\/td><td>247<\/td><td>247<\/td><\/tr>\n\n<tr><td>23<\/td><td>254<\/td><td>243<\/td><td>243<\/td><\/tr>\n\n<tr><td>22<\/td><td>248<\/td><td>237<\/td><td>237<\/td><\/tr>\n\n<tr><td>21<\/td><td>243<\/td><td>231<\/td><td>231<\/td><\/tr>\n\n<tr><td>20<\/td><td>238<\/td><td>226<\/td><td>226<\/td><\/tr>\n\n<\/tbody><\/table><\/figure>\n\n\n\n\n\n<h2 id=\"h-hrb-hardness-conversion-table-annealed-or-soft-steel\" class=\"wp-block-heading\">HRB Hardness Conversion Table \u2014 Annealed or Soft Steel<\/h2>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Full conversion chart for Rockwell B (HRB) to Vickers (HV) and Brinell steel ball (HBS). Data based on ASTM E140 for non-austenitic steels.<\/p>\n\n\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table><thead><tr>\n\n<th>HRB<\/th><th>HV<\/th><th>HBS<\/th><\/tr><\/thead><tbody>\n\n<tr><td>100<\/td><td>240<\/td><td>240<\/td><\/tr>\n\n<tr><td>99<\/td><td>234<\/td><td>234<\/td><\/tr>\n\n<tr><td>98<\/td><td>228<\/td><td>228<\/td><\/tr>\n\n<tr><td>97<\/td><td>222<\/td><td>222<\/td><\/tr>\n\n<tr><td>96<\/td><td>216<\/td><td>216<\/td><\/tr>\n\n<tr><td>95<\/td><td>210<\/td><td>210<\/td><\/tr>\n\n<tr><td>94<\/td><td>205<\/td><td>205<\/td><\/tr>\n\n<tr><td>93<\/td><td>200<\/td><td>200<\/td><\/tr>\n\n<tr><td>92<\/td><td>195<\/td><td>195<\/td><\/tr>\n\n<tr><td>91<\/td><td>190<\/td><td>190<\/td><\/tr>\n\n<tr><td>90<\/td><td>185<\/td><td>185<\/td><\/tr>\n\n<tr><td>89<\/td><td>180<\/td><td>180<\/td><\/tr>\n\n<tr><td>88<\/td><td>176<\/td><td>176<\/td><\/tr>\n\n<tr><td>87<\/td><td>172<\/td><td>172<\/td><\/tr>\n\n<tr><td>86<\/td><td>169<\/td><td>169<\/td><\/tr>\n\n<tr><td>85<\/td><td>165<\/td><td>165<\/td><\/tr>\n\n<tr><td>84<\/td><td>162<\/td><td>162<\/td><\/tr>\n\n<tr><td>83<\/td><td>159<\/td><td>159<\/td><\/tr>\n\n<tr><td>82<\/td><td>156<\/td><td>156<\/td><\/tr>\n\n<tr><td>81<\/td><td>153<\/td><td>153<\/td><\/tr>\n\n<tr><td>80<\/td><td>150<\/td><td>150<\/td><\/tr>\n\n<tr><td>79<\/td><td>147<\/td><td>147<\/td><\/tr>\n\n<tr><td>78<\/td><td>144<\/td><td>144<\/td><\/tr>\n\n<tr><td>77<\/td><td>141<\/td><td>141<\/td><\/tr>\n\n<tr><td>76<\/td><td>139<\/td><td>139<\/td><\/tr>\n\n<tr><td>75<\/td><td>137<\/td><td>137<\/td><\/tr>\n\n<tr><td>74<\/td><td>135<\/td><td>135<\/td><\/tr>\n\n<tr><td>73<\/td><td>132<\/td><td>132<\/td><\/tr>\n\n<tr><td>72<\/td><td>130<\/td><td>130<\/td><\/tr>\n\n<tr><td>71<\/td><td>127<\/td><td>127<\/td><\/tr>\n\n<tr><td>70<\/td><td>125<\/td><td>125<\/td><\/tr>\n\n<tr><td>69<\/td><td>123<\/td><td>123<\/td><\/tr>\n\n<tr><td>68<\/td><td>121<\/td><td>121<\/td><\/tr>\n\n<tr><td>67<\/td><td>119<\/td><td>119<\/td><\/tr>\n\n<tr><td>66<\/td><td>117<\/td><td>117<\/td><\/tr>\n\n<tr><td>65<\/td><td>116<\/td><td>116<\/td><\/tr>\n\n<tr><td>64<\/td><td>114<\/td><td>114<\/td><\/tr>\n\n<tr><td>63<\/td><td>112<\/td><td>112<\/td><\/tr>\n\n<tr><td>62<\/td><td>110<\/td><td>110<\/td><\/tr>\n\n<tr><td>61<\/td><td>108<\/td><td>108<\/td><\/tr>\n\n<tr><td>60<\/td><td>107<\/td><td>107<\/td><\/tr>\n\n<tr><td>59<\/td><td>106<\/td><td>106<\/td><\/tr>\n\n<tr><td>58<\/td><td>104<\/td><td>104<\/td><\/tr>\n\n<tr><td>57<\/td><td>103<\/td><td>103<\/td><\/tr>\n\n<tr><td>56<\/td><td>101<\/td><td>101<\/td><\/tr>\n\n<tr><td>55<\/td><td>100<\/td><td>100<\/td><\/tr>\n\n<\/tbody><\/table><\/figure>\n\n\n\n\n\n<h2 id=\"h-hardness-conversions-this-calculator-covers\" class=\"wp-block-heading\">Hardness Conversions This Calculator Covers<\/h2>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">The calculator works in both directions across five scales: Rockwell C (HRC), Rockwell B (HRB), Vickers (HV), and Brinell measured with either a tungsten carbide ball (HBW) or a steel ball (HBS). You enter the value you already have, and it returns the nearest listed equivalent on each of the other scales, so you do not need to read across a printed chart by eye.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">The conversions people run here most often are the ones a single chart row cannot answer on its own. Converting Brinell to Rockwell C matters when an annealed supply limit is given in HBW but the drawing specifies HRC. Converting Vickers to Rockwell C is common when a <a href=\"https:\/\/aobosteel.com\/microindentation-hardness-testing-tool-steel\/\">surface or microhardness reading<\/a> is reported in HV and you need the equivalent working HRC. HBW to HRC and HRB to HRC come up when a mill certificate lists one scale while your own specification uses another. Each of these is a single entry in the calculator above rather than a manual lookup.<\/p>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Because soft and hardened steel are measured by different methods, the tool keeps two separate ranges. The HRC range covers hardened and tempered tool steel, and the HRB range covers annealed or normalized steel. This split prevents a low soft reading from being matched into the hardened range by mistake. As a worked example in the soft range, 95 HRB is close to 210 HV.<\/p>\n\n\n\n\n\n<h2 id=\"h-which-range-should-you-use\" class=\"wp-block-heading\">Which Range Should You Use?<\/h2>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">Use the HRC range when the steel has been hardened and tempered. Use the HRB range when the steel is still soft, annealed, or normalized. This separation prevents low HB or HV values from being incorrectly matched to a hardened steel range.<\/p>\n\n\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-7387b849 wp-block-columns-is-layout-flex\">\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-50151ab7 wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:18px;padding-right:18px;padding-bottom:18px;padding-left:18px\">\n\n\n\n<h3 id=\"h-hrc-for-hardened-tool-steel\" class=\"wp-block-heading\">HRC for hardened tool steel<\/h3>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">HRC is the common working hardness scale for hardened tool steel, such as <a href=\"https:\/\/aobosteel.com\/d2-tool-steel\/\">D2 at 58-60 HRC<\/a>, <a href=\"https:\/\/aobosteel.com\/h13-tool-steel\/\">H13 at 44-52 HRC<\/a>, or <a href=\"https:\/\/aobosteel.com\/m2-tool-steel-hardness\/\">high-speed steel above 60 HRC<\/a>.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-50151ab7 wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:18px;padding-right:18px;padding-bottom:18px;padding-left:18px\">\n\n\n\n<h3 id=\"h-hb-and-hrb-for-soft-supply\" class=\"wp-block-heading\">HB and HRB for soft supply<\/h3>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Annealed tool steel is usually checked by Brinell hardness. Many supply specifications and MTCs use values such as maximum 229 HB or maximum 255 HB.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-50151ab7 wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:18px;padding-right:18px;padding-bottom:18px;padding-left:18px\">\n\n\n\n<h3 id=\"h-hv-for-technical-comparison\" class=\"wp-block-heading\">HV for technical comparison<\/h3>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">HV is common in technical references, inspection reports, surface hardness checks, and heat-treatment data. It is useful for comparison, but it does not replace the required test method.<\/p>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n<\/div>\n\n\n\n\n\n<h2 id=\"h-data-source-and-use-limit\" class=\"wp-block-heading\">Data Source and Use Limit<\/h2>\n\n\n\n\n\n<p class=\"wp-block-paragraph\">The calculation data are simplified from ASTM E140 hardness conversion tables for non-austenitic steels. The HRC range is based on the Rockwell C hardness range table, and the HRB range is based on the Rockwell B hardness range table. For this tool steel calculator, only the practical front-end scales are retained: HRC, HRB, HV, HBS, and HBW.<\/p>\n\n\n\n\n\n<div class=\"wp-block-group has-background is-layout-constrained wp-container-core-group-is-layout-b62443b2 wp-block-group-is-layout-constrained\" style=\"background-color:#f7f9fc;padding-top:20px;padding-right:20px;padding-bottom:20px;padding-left:20px\">\n\n\n\n<h3 id=\"h-why-the-values-are-approximate\" class=\"wp-block-heading\">Why the values are approximate<\/h3>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Rockwell, Brinell, and Vickers tests use different indenters, loads, indentation shapes, and measurement principles. A value such as 60 HRC can be compared with about 697 HV, but it is not a mathematical unit conversion like millimeters to inches.<\/p>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Tool steel grade, carbide distribution, heat treatment condition, surface preparation, sample thickness, and testing equipment can all affect the reading. Use the converted value for quick comparison, not for final acceptance.<\/p>\n\n\n\n<\/div>\n\n\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\">Data source: ASTM E140 hardness conversion tables for non-austenitic steels. Data compiled from public references and industry standards.<\/p>\n\n\n","protected":false},"excerpt":{"rendered":"<p>Tool Steel Hardness Conversion Calculator Enter any hardness value and the calculator returns the nearest equivalents across the Rockwell C, Rockwell B, Vickers, and Brinell scales. It is built for the readings that do not have a ready answer, such as turning a single Vickers number from a test report into HRC, or checking a [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":15117,"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-12304","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Tool Steel Hardness Conversion Calculator (HRC, HV, HBW, HRB)<\/title>\n<meta name=\"description\" content=\"Convert any tool steel hardness value between HRC, HRB, HV, HBW and HBS. 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