DIN 17442 Grade G‑X20CrMo13: Quenched & Tempered (QT) – High‑Performance Martensitic Stainless Steel
G-X 20 CrMo 13, for medical instruments, components of turbines, parts in superheated steam valves, for temperatures up to 500 °C.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.7 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 23.0 °C | 220 GPa | Typical for Martensitic Stainless Steel |
Elongation | 20.0 °C | 12 % | |
Hardness, Brinell | 20.0 °C | 170 - 240 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Martensitic Stainless Steel |
Shear modulus | 23.0 °C | 77 GPa | Typical for Martensitic Stainless Steel |
Tensile strength | 20.0 °C | 590 - 790 MPa | |
Yield strength Rp0.2 | 20.0 °C | 440 MPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.05E-5 1/K | |
200.0 °C | 1.1E-5 1/K | ||
300.0 °C | 1.1E-5 1/K | ||
400.0 °C | 1.15E-5 1/K | ||
500.0 °C | 1.2E-5 1/K | ||
Max service temperature, long | 0 - 500 °C | ||
Melting point | 1370 - 1530 °C | Typical for Martensitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 460 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 29 W/(m·K) | |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20.0 °C | 5.5E-7 Ω·m |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.17 - 0.22 % |
Chromium | 12 - 14 % |
Manganese | 1 % |
Molybdenum | 0.9 - 1.3 % |
Nickel | 1 % |
Phosphorus | 0.05 % |
Silicon | 1 % |
Sulfur | 0.03 % |
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