EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P)
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) introduction
X50CrMnNiNbN21-9 is a Cr-Mn-Ni-W-Nb-N-alloyed valve steel. The steel shows sufficient corrosion resistance in exhaust condensate and very good resistance to lead compounds at increased temperatures.
Use: inlet valves (extremely loaded), exhaust valves (high-loaded)
Equivalent material: GB 50Cr21Mn9Ni4Nb2WN, ISO X50CrMnNiNbN21-9, GOST X50CrMnNiNbN219, UNS S63019, SAE XEV-F, DIN 1.4882, DIN X50CrMnNiNbN21-9, AFNOR Z50CMNNb21-09, AISI XEV-F, EN 1.4882
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) general
| Property |
Temperature |
Value |
| Density |
20.0 °C |
Density of 7.8 g/cm³ |
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) thermal
| Property |
Temperature |
Value |
Comment |
| Coefficient of thermal expansion |
100.0 °C |
Coefficient of thermal expansion of 1.55E-5 1/K |
- |
| - |
300.0 °C |
Coefficient of thermal expansion of 1.75E-5 1/K |
- |
| - |
500.0 °C |
Coefficient of thermal expansion of 1.85E-5 1/K |
- |
| - |
700.0 °C |
Coefficient of thermal expansion of 1.88E-5 1/K |
- |
| Melting point |
- |
Melting point of 1230 - 1480 °C |
Typical for Austenitic Stainless Steel |
| Specific heat capacity |
20.0 °C |
Specific heat capacity of 500 J/(kg·K) |
- |
| Thermal conductivity |
20.0 °C |
Thermal conductivity of 14.5 W/(m·K) |
- |
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) chemical
| Property |
Value |
| Carbon |
Carbon of 0.45 - 0.55 % |
| Chromium |
Chromium of 20 - 22 % |
| Manganese |
Manganese of 8 - 10 % |
| Nickel |
Nickel of 3.5 - 5.5 % |
| Nitrogen |
Nitrogen of 0.4 - 0.6 % |
| Phosphorus |
Phosphorus of 0.05 % |
| Silicon |
Silicon of 0.45 % |
| Sulfur |
Sulfur of 0.03 % |
| Tungsten |
Tungsten of 0.8 - 1.5 % |
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) electrical
| Property |
Temperature |
Value |
Comment |
| Electrical resistivity |
23.0 °C |
Electrical resistivity of 8.5E-7 Ω·m |
Typical for Austenitic Stainless Steel |
EN 10090 Grade X50CrMnNiNbN21-9 solution heat-treated and precipitation hardened (+AT+P) mechanical
| Property |
Temperature |
Value |
Comment |
| Elastic modulus |
20.0 °C |
Elastic modulus of 205 GPa |
- |
| Elongation |
20.0 °C |
Elongation of 12 % |
- |
| Hardness, Rockwell C |
20.0 °C |
Hardness, Rockwell C of 30 [-] |
- |
| Poisson's ratio |
23.0 °C |
Poisson's ratio of 0.3 [-] |
Typical for Austenitic Stainless Steel |
| Reduction of area |
20.0 °C |
Reduction of area of 15 % |
- |
| Shear modulus |
23.0 °C |
Shear modulus of 77 GPa |
Typical for Austenitic Stainless Steel |
| Tensile strength |
20.0 °C |
Tensile strength of 950 - 1150 MPa |
- |
| - |
500.0 °C |
Tensile strength of 680 MPa |
- |
| - |
550.0 °C |
Tensile strength of 650 MPa |
- |
| - |
600.0 °C |
Tensile strength of 610 MPa |
- |
| - |
650.0 °C |
Tensile strength of 550 MPa |
- |
| - |
700.0 °C |
Tensile strength of 480 MPa |
- |
| - |
750.0 °C |
Tensile strength of 410 MPa |
- |
| - |
800.0 °C |
Tensile strength of 340 MPa |
- |
| Yield strength Rp0.2 |
20.0 °C |
Yield strength Rp0.2 of 580 MPa |
- |
| - |
500.0 °C |
Yield strength Rp0.2 of 350 MPa |
- |
| - |
550.0 °C |
Yield strength Rp0.2 of 330 MPa |
- |
| - |
600.0 °C |
Yield strength Rp0.2 of 310 MPa |
- |
| - |
650.0 °C |
Yield strength Rp0.2 of 280 MPa |
- |
| - |
700.0 °C |
Yield strength Rp0.2 of 260 MPa |
- |
| - |
750.0 °C |
Yield strength Rp0.2 of 235 MPa |
- |
| - |
800.0 °C |
Yield strength Rp0.2 of 220 MPa |
- |
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