EN 10090 X33CrNiMnN23-8 – High‑Performance Valve Steel (Solution Heat‑Treated & Precipitation Hardened)
X33CrNiMnN23-8 is a Cr-Ni-Mn-W-N- alloyed valve steel.
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.8 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 205 GPa | |
Elongation | 20.0 °C | 20 % | |
Hardness, Rockwell C | 20.0 °C | 25 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Austenitic Stainless Steel |
Reduction of area | 20.0 °C | 30 % | |
Shear modulus | 23.0 °C | 77 GPa | Typical for Austenitic Stainless Steel |
Tensile strength | 20.0 °C | 850 - 1100 MPa | |
500.0 °C | 600 MPa | ||
550.0 °C | 570 MPa | ||
600.0 °C | 530 MPa | ||
650.0 °C | 470 MPa | ||
700.0 °C | 400 MPa | ||
750.0 °C | 340 MPa | ||
800.0 °C | 280 MPa | ||
Yield strength Rp0.2 | 20.0 °C | 550 MPa | |
500.0 °C | 270 MPa | ||
550.0 °C | 250 MPa | ||
600.0 °C | 220 MPa | ||
650.0 °C | 210 MPa | ||
700.0 °C | 190 MPa | ||
750.0 °C | 180 MPa | ||
800.0 °C | 170 MPa | ||
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.65E-5 1/K | |
300.0 °C | 1.71E-5 1/K | ||
500.0 °C | 1.73E-5 1/K | ||
700.0 °C | 1.74E-5 1/K | ||
Melting point | 1230 - 1480 °C | Typical for Austenitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 500 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 14.5 W/(m·K) | |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 8.5E-7 Ω·m | Typical for Austenitic Stainless Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.28 - 0.38 % |
Chromium | 22 - 24 % |
Manganese | 1.5 - 3.5 % |
Molybdenum | 0.5 % |
Nickel | 7 - 9 % |
Nitrogen | 0.25 - 0.35 % |
Phosphorus | 0.05 % |
Silicon | 0.5 - 1 % |
Sulfur | 0.03 % |
Tungsten | 0.5 % |
Metal
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