Germany DIN NF EN 10090, 1.4882 / X50CrMnNiNbN-21-9 steel strip Specialsteel Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 1.4882 / X50CrMnNiNbN-21-9 steel strip | DIN | Germany | Valve steels and alloys for internal combustion engines | 
| C | Si | Mn | P | S | Cr | Ni | Mo | N | W | 
|---|---|---|---|---|---|---|---|---|---|
| 0.45 -0.55 | ≤0.45 | 8.00 -10.00 | ≤0.045 | ≤0.030 | 20.00 -22.00 | 3.50 -5.50 | ≤ ≥ | 0.40 -0.60 | 0.80 -1.50 | 
| Yield Rp0.2 (MPa) | Tensile Rm (MPa) | Impact KV/Ku (J) | Elongation A (%) | Reduction in cross section on fracture Z (%) | As-Heat-Treated Condition | Brinell hardness (HBW) | 
|---|---|---|---|---|---|---|
| 198 (≥) | 476 (≥) | 14 | 13 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 131 | 
| Temperature (°C) | Modulus of elasticity (GPa) | Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and | Thermal conductivity (W/m·°C) | Specific thermal capacity (J/kg·°C) | Specific electrical resistivity (Ω mm²/m) | Density (kg/dm³) | Poisson’s coefficient, ν | 
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.43 | - | |||
| 662 | 967 | - | 12.3 | 241 | - | ||
| 998 | - | 34 | 11.2 | 133 | 143 | 
Heat treated : 1912°C - 1435°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| X50CrMnNiNbN21-9 | |||
| X50CrMnNiNbN21-9 | 
| NF EN 10090 | Valve steels and alloys for internal combustion engines | NF-EN-10090.pdf | 
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