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420 stainless steel is a high-carbon stainless steel, mainly consisting of chromium, carbon and molybdenum, with good corrosion resistance and strength.
420 stainless steel is a martensitic alloy with a higher carbon content compared to 410 and 416, enabling it to be hardened through heat treatment. It boasts at least 12% chromium, ensuring its corrosion resistance capabilities. Primarily distinguished by its ability to achieve high hardness levels of up to 50 RHC, it maintains good ductility when annealed. The optimal corrosion resistance of 420 is attained when it's both hardened and finely polished or ground.
This steel variant demonstrates commendable resistance to various corrosive elements including atmospheric conditions, most foods, freshwater, mild acids and alkalies, steam, and many petrochemicals, provided it's in the hardened state. The elevated carbon content enhances its strength and hardness beyond that of 410 and 416 stainless steels. While 420 machines well in its annealed state, its machinability decreases significantly when hardened beyond 30 HRC. Fabrication techniques must consider its challenging weldability, often necessitating post-fabrication hardening and tempering. It is generally not advised for use at temperatures exceeding its tempering range due to a decrease in mechanical properties.
420 stainless steel is distinguished by its excellent strength, heightened hardness, and superior wear resistance, a direct result of its high carbon composition. While these characteristics make it exceptionally robust, they do lead to reduced ductility and challenging weldability. It offers moderate corrosion resistance, making it the material of choice for applications where mechanical strength is prioritized over resistance to corrosive elements.
The material's physical properties are significantly influenced by any tempering treatments it has undergone, allowing customization to specific application requirements. For precise physical properties tailored to your needs, consultation with our materials specialist is recommended to ensure the suitability of 420 stainless steel for your specific applications.
Product Name | 420 Stainless Steel Coil |
Type | Steel Coil |
Thickness | 2.5mm-10.0mm |
Length | 2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc. |
Width | 610mm-2000mm |
Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. |
Surface | BA, 2B, NO.1, NO.4, 4K, HL, 8K, etc. |
Scope of Application | Widely used in high temperature and electrical industry, medical equipment construction, chemical, food industry, agriculture and ship parts, food and beverage packaging, Kitchen supplies, trains, airplanes, conveyor belts, vehicles, bolts, nuts, springs and screens, etc. |
Certificate | ISO, SGS, BV, etc. |
Production Technology | Hot Rolling, Cold Rolling |
Edge Processing | Edging, Trimming |
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 420 | 420 | S42000 | 2100Cr12 | 1.4021 | X20Cr13 | 20Х13 | 2303 | SUS 420J1 |
| Grade | Standard | Chemical Composition(%) | ||||||
| C | Si | Mn | P | S | Cr | Ni | ||
| 420 | ASTM A240 | 0.16~0.25 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.00~14.00 | ≤0.75 |
| Grade | AISI/ASTM | Tensile Test | Hardness Test | |||
| 0.2% Y.S(Mpa) | T.S(Mpa) | Elongation(%) | Empering Temperature (°C) | HB | ||
| 420 | ASTM A240 | ≥345 | ≥655 | ≥20 | Annealed | 241 Max |
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Liaocheng Economic and Technological Development Zone, Shandong Province, China
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