{"id":9313,"date":"2025-08-02T08:51:33","date_gmt":"2025-08-02T00:51:33","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=9313"},"modified":"2026-04-25T23:50:13","modified_gmt":"2026-04-25T15:50:13","slug":"420-stainless-steel","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/ko\/420-stainless-steel\/","title":{"rendered":"420 Stainless Steel | 1.2083 | 2Cr13"},"content":{"rendered":"
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420 Stainless Steel | 1.2083 | 2Cr13<\/mark><\/h1>\n\n\n\n

AOBO STEEL – Trusted Global Tool Steel Supplier<\/mark><\/h3>\n\n\n\n
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420 stainless steel is a martensitic stainless steel, which is a type of iron-chromium alloy. It is part of the 400-series stainless steel classifications. Unlike some other stainless steel types, AISI 420 stainless steel is magnetic.<\/p>\n\n\n\n

1. Applications<\/h2>\n\n\n\n
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  • Cutlery and Sharp-edged Tools <\/li>\n\n\n\n
  • Medical and Surgical Instruments <\/li>\n\n\n\n
  • Plastic Molds and Mold Tools <\/li>\n\n\n\n
  • Valve and Pump Parts <\/li>\n\n\n\n
  • Gears, Shafts, and Rollers <\/li>\n\n\n\n
  • Industrial and Wear-Resistant Applications <\/li>\n\n\n\n
  • Cups and Other Formed Parts <\/li>\n\n\n\n
  • Bearings <\/li>\n\n\n\n
  • Other Applications: Springs, Hand Tools, Magnets, Fasteners, Machinery Parts, Press Plates, Automotive exhaust components, Dies for fine piercing of micropatterns into metallic sheets, Domestic appliances and utensils.<\/li>\n<\/ul>\n\n\n\n

    2.\u00a0420 Stainless Steel Composition<\/h2>\n\n\n\n
    Element<\/td>Carbon (C)<\/td>Manganese (Mn)<\/td>Silicon (Si)<\/td>Phosphorus (P)<\/td>Sulfur (S)<\/td>Chromium (Cr)<\/td><\/tr>
    Compositional <\/td>0.15- 0.40%<\/td>\u2264 1.00%<\/td>\u2264 0.50%<\/td>\u2264 0.040%<\/td>\u2264 0.030%<\/td>12.00 \u2013 14.00%<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    3. 420 Stainless Steel Properties<\/h2>\n\n\n\n
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    • Hardness and Wear Resistance: <\/strong>After appropriate heat treatment, 420 stainless steel has a hardness of 46\u201352 HRC.<\/span> This hardness gives it good wear and corrosion resistance.<\/li>\n\n\n\n
    • Corrosion Resistance:<\/strong> The chromium in AISI 420 stainless steel forms a passivation layer that protects its surface and provides excellent corrosion resistance in mild atmospheric, domestic, and industrial environments.<\/li>\n\n\n\n
    • Polishability: <\/strong>This grade exhibits excellent polishability, making it a preferred choice for applications requiring a high-quality surface finish, such as plastic injection molds and optical components.<\/li>\n\n\n\n
    • Toughness and Weldability:\u00a0<\/strong>The carbon content is higher than that of low-carbon steel, making it harder but with lower toughness. Due to its high carbon content, it also has poor weldability.\u00a0If welding is necessary, significant preheating and post-weld heat treatments (like\u00a0annealing<\/em>) are often required to prevent cracking. Using specialized filler metals (e.g., ERNiCr-3) might be considered, though this can affect the final strength and hardness of the weld area.<\/li>\n\n\n\n
    • Machinability:\u00a0<\/strong>In its annealed condition, 420 steel offers fair machinability. For applications demanding more complex machining, a free-machining variant,\u00a0420F<\/strong>\u00a0(with added sulfur), is available. Note that the addition of sulfur can slightly decrease notch toughness.<\/li>\n<\/ul>\n\n\n\n
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      420 Stainless Steel<\/figcaption><\/figure>\n<\/div>\n\n\n\n
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      Interested in AISI 420 stainless steel?<\/strong> Please fill out the form below to contact us now!<\/strong><\/p>\n\n\n\n

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