AISI 420 High-Carbon steel | Din X20Cr13 | W-Nr. 1.4021 Sheet Plate
AISI 420 High-Carbon Steel is a martensitic stainless steel containing at least 12% chromium and a relatively high carbon content. It offers excellent corrosion resistance, high surface hardness, and good edge retention after heat treatment. This grade is widely used in cutlery, surgical instruments, molds, and mechanical parts that require both wear resistance and moderate corrosion protection.
At Otai Special Steel, we supply AISI 420 stainless steel plates, round bars, and flats with customized processing services for global clients.
Supply Form of AISI 420 High-Carbon steel Din X20Cr13 W-Nr. 1.4021 JIS SUS420
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- Round
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- sheet
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- Square
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- Plate
Supply Range of AISI 420 High-Carbon steel Din X20Cr13
AISI 420 High-Carbon steel Round Bar: diameter 10mm – 400mm
420 High-Carbon steel Plate: thickness 10 –500mm x width 200– 1400mm
AISI 420 High-Carbon steel Block: 210mm x 500-810mm
Chemical Composition of AISI 420 DIN X20Cr13 Material
| Element | Content (%) |
|---|---|
| C | 0.15 – 0.40 |
| Si | ≤ 1.00 |
| Mn | ≤ 1.00 |
| P | ≤ 0.040 |
| S | ≤ 0.030 |
| Cr | 12.00 – 14.00 |
| Ni | ≤ 0.60 |
AISI 420 Material Equivalent and Related Specifications
| Standard System | Grade / Designation | Notes |
|---|---|---|
| USA | AISI 420, ASTM A240 / A276, UNS S42000 | Standard martensitic stainless steel |
| Europe (EN/DIN) | X20Cr13, 1.4021 | DIN EN 10088-3 |
| UK (BS) | 420S37 | BS 970 |
| France (AFNOR) | Z20C13 | NF EN 10088-3 |
| Japan (JIS) | SUS420J1 / SUS420J2 | JIS G4303 |
| China (GB) | 20Cr13 (2Cr13), 30Cr13 (3Cr13) | GB/T 1220, GB/T 20878 |
| ISO | X20Cr13, X30Cr13 | ISO 15510 |
Mechanical Properties (After Heat Treatment)
| Property | Value Range |
|---|---|
| Tensile Strength (Rm) | 700 – 1050 MPa |
| Yield Strength (Rp0.2) | ≥ 450 MPa |
| Elongation (A5) | ≥ 15% |
| Hardness (Annealed) | ≤ 241 HBW |
| Hardness (Hardened) | 50 – 55 HRC |
Heat Treatment Guide for AISI 420
| Process | Temperature Range | Cooling Method |
|---|---|---|
| Annealing | 745 – 800°C | Slow furnace cooling |
| Hardening | 980 – 1030°C | Air or oil quenching |
| Tempering | 150 – 370°C | Air cooling |
| Stress Relief | 650 – 750°C | Air cooling |
Applications of AISI 420 High-Carbon Steel
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Kitchen knives and cutlery
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Surgical and dental instruments
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Plastic injection molds
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Valve components and pump shafts
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Bearings and bushings in corrosive environments
If you have any AISI 420 steel inquiry and questions for Price, Application, hot treatment, please don’t hesitate to contact us.
Email: Jack@otaisteel.com
Tel: +86-769- 23190193
Fax: +86-769-88705839
For more details, please take a look at our website: www.otaisteel.com