420 | 1.2083 | SUS420J2 | S136
1.2083 (X40Cr14 / ≈AISI 420) is a martensitic stainless mould steel. It features outstanding corrosion resistance, together with good wear resistance and polishability.
Available Form
Round Bar · Diameter
Approx. Φ2–800 mm
Flat Bar · Thickness
Approx. 2 ~ 600 mm
Flat Bar · Width
Approx. 100 ~ 2300 mm
Custom Size
Upon request
Steel Grade Comparison
| W-Nr | EN | AISI | JIS |
| 1.2083 | X40Cr14 | 420 | SUS420J2 |
Chemical Composition(wt%)
| C | Si | Mn | P | S | Cr |
| 0.36~0.42 | ≤1.00 | ≤1.00 | ≤0.03 | ≤0.03 | 12.5~14.5 |
Physical Properties
Density: 7.80 g/cm³
Modulus of Elasticity: 220 GPa
Thermal Conductivity: 22.0 W/(m.K)
| Temperature | 20-100°C | 2-200°C | 2-300°C | 2-400°C |
| Coefficient of Thermal Expansion(×10-6 /K) | 10.5 | 10.9 | 11.3 | 11.6 |
Heat Treatment Process
Hardening: Heat the steel evenly to 1020–1050°C until the whole section reaches temperature. Then quench in oil to cool.
Annealing: Heat the steel to 750–800°C, hold it well at temperature, and then let it cool slowly inside the furnace.
Tempering: Heat the steel uniformly, hold it at the selected tempering temperature, and then allow it to cool in still air.
| Tempering Temperature | 100°C | 200°C | 300°C | 400°C |
| Hardness (HRC) | 56 | 55 | 52 | 51 |
Application Fields
All kinds of cutting tools - knives, shears, surgical instruments, mould for plastics production, as well as for surgical instruments and measuring gauges.
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.
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