420mod | 1.2316
1.2316 (X38CrMo16 / ≈AISI 420mod) is a corrosion-resistant martensitic stainless mold steel with excellent corrosion resistance, good polishability, and high mechanical strength. Typically supplied in a pre-hardened condition, it is ideal for plastic molds used with corrosive materials such as PVC.
Available Form
Round Bar
Custom Diameter & Length
Flat Bar
Custom Thickness, Width & Length
Square Bar
Custom Width & Length
Steel Plate
Custom Thickness, Width & Length
Steel Grade Comparison
| W-Nr | EN | AISI | JIS |
| 1.2316 | X38CrMo16 | 420mod | – |
Chemical Composition(wt%)
| C | Si | Mn | P | S | Cr | Mo | Ni |
| 0.33~0.45 | ≤1.00 | ≤1.50 | ≤0.03 | ≤0.03 | 15.5~17.5 | 0.80~1.30 | ≤1.00 |
Physical Properties
Density: 7.70 g/cm³
Modulus of Elasticity: 218 GPa
Thermal Conductivity: 23.5 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 | 10.8 | 11.1 | 11.5 |
Heat Treatment Process
Hardening: Heat the steel evenly to 1000~1040°C until the whole section reaches temperature. Then quench in oil to cool.
Annealing: Heat the steel to 780~820°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) | 49 | 47 | 46 | 46 |
Application Fields
Plastic injection molds, plastic extrusion molds, molds for corrosive plastics, such as PVC, food processing equipment components, corrosion-resistant machine components
Disclaimer: the information and data presented herein are typical values for reference and are not intended as warranties to readers.
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