USA UNS EV8 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | EV8 | UNS | USA | Steel for exhaust valves | 
| C | Si | Mn | P | S | Cr | Ni | N | 
|---|---|---|---|---|---|---|---|
| 0.48 -0.58 | ≤0.25 | 8.00 -10.0 | ≤0.050 | ≤0.035 | 20.0 -23.0 | 3.25 -4.50 | 0.38 -0.55 | 
| 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) | 
|---|---|---|---|---|---|---|
| 324 (≥) | 736 (≥) | 12 | 13 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 123 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.14 | - | |||
| 821 | 926 | - | 42.3 | 123 | - | ||
| 429 | - | 44 | 31.2 | 242 | 422 | 
Heat treated : 1716°C - 1722°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| EV8 | |||
| HEV8 | |||
| SAE EV8 | |||
| SAE EV8 | |||
| SAE HEV8 | |||
| SAE HEV8 | |||
| S63008 | |||
| UNS S63008 | |||
| UNS S63008 | 
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