USA UNS HEV7 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | HEV7 | UNS | USA | Steel for exhaust valves |
| C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|
| ≤0.08 | ≤0.70 | ≤1.50 | ≤ ≥ | ≤ ≥ | ≤14.75 | ≤26.0 | ≤1.25 |
| 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) |
|---|---|---|---|---|---|---|
| 383 (≥) | 439 (≥) | 34 | 12 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 133 |
| 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 |
|---|---|---|---|---|---|---|---|
| 32 | - | - | 0.42 | - | |||
| 712 | 429 | - | 33.3 | 222 | - | ||
| 522 | - | 24 | 43.2 | 433 | 111 |
Heat treated : 1659°C - 1535°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| HEV7 | |||
| SAE HEV7 | |||
| SAE HEV7 | |||
| S66286 | |||
| S66286 | |||
| S66286 | |||
| UNS S66286 | |||
| UNS S66286 | |||
| A-286 | |||
| A-286 |
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