USA UNS EV9 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | EV9 | UNS | USA | Steel for exhaust valves | 
| C | Si | Mn | P | S | Cr | Ni | Mo | W | 
|---|---|---|---|---|---|---|---|---|
| 0.35 -0.50 | 0.30 -0.80 | ≤1.00 | ≤0.045 | ≤0.030 | 12.0 -15.0 | 12.0 -15.0 | 0.20 -0.50 | 1.50 -3.00 | 
| 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) | 
|---|---|---|---|---|---|---|
| 614 (≥) | 614 (≥) | 12 | 24 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 214 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.31 | - | |||
| 195 | 438 | - | 32.3 | 224 | - | ||
| 851 | - | 13 | 13.2 | 314 | 121 | 
Heat treated : 1971°C - 1313°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| EV9 | |||
| SAE EV9 | |||
| SAE EV9 | |||
| S63009 | |||
| UNS S63009 | |||
| UNS S63009 | |||
| STPA20 | |||
| STPA22 | 
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