EN 10090 Grade X85CrMoV18-2: Quenched & Tempered (QT) Valve Steel – Superior Corrosion & Thermal Resistance
X85CrMoV18-2 is a martensitic Cr-Mo-V-alloyed valve steel. The steel shows very high corrosion resistance in exhaust condensate and good resistance to lead compounds at increased temperatures. Use: inlet valves, exhaust valves, valves
Properties
General
| Property | Temperature | Value |
|---|---|---|
Density | 20.0 °C | 7.7 g/cm³ |
Mechanical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Elastic modulus | 20.0 °C | 210 GPa | |
Elongation | 20.0 °C | 7 % | |
Hardness, Brinell | 20.0 °C | 296 - 355 [-] | |
Poisson's ratio | 23.0 °C | 0.3 [-] | Typical for Martensitic Stainless Steel |
Reduction of area | 20.0 °C | 12 % | |
Shear modulus | 23.0 °C | 77 GPa | Typical for Martensitic Stainless Steel |
Tensile strength | 20.0 °C | 1000 - 1200 MPa | |
500.0 °C | 550 MPa | ||
550.0 °C | 400 MPa | ||
600.0 °C | 300 MPa | ||
650.0 °C | 230 MPa | ||
700.0 °C | 180 MPa | ||
Yield strength Rp0.2 | 20.0 °C | 800 MPa | |
500.0 °C | 500 MPa | ||
550.0 °C | 370 MPa | ||
600.0 °C | 280 MPa | ||
650.0 °C | 170 MPa | ||
700.0 °C | 120 MPa | ||
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100.0 °C | 1.09E-5 1/K | |
300.0 °C | 1.12E-5 1/K | ||
500.0 °C | 1.15E-5 1/K | ||
700.0 °C | 1.18E-5 1/K | ||
Melting point | 1370 - 1530 °C | Typical for Martensitic Stainless Steel | |
Specific heat capacity | 20.0 °C | 500 J/(kg·K) | |
Thermal conductivity | 20.0 °C | 21 W/(m·K) | |
Electrical
| Property | Temperature | Value | Comment |
|---|---|---|---|
Electrical resistivity | 23.0 °C | 6E-7 Ω·m | Typical for Martensitic Stainless Steel |
Chemical properties
| Property | Value |
|---|---|
Carbon | 0.8 - 0.9 % |
Chromium | 16.5 - 18.5 % |
Manganese | 1.5 % |
Molybdenum | 2 - 2.5 % |
Phosphorus | 0.04 % |
Silicon | 1 % |
Sulfur | 0.03 % |
Vanadium | 0.3 - 0.6 % |
Metal
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