USA UNS HEVl Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | HEVl | UNS | USA | Steel for exhaust valves |
| C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|
| 0.10 - ≥ | 0.50 - ≥ | 1.50 - ≥ | ≤ ≥ | ≤ ≥ | 21.3 - ≥ | 20.0 - ≥ | 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) |
|---|---|---|---|---|---|---|
| 691 (≥) | 179 (≥) | 24 | 41 | 21 | 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 |
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.44 | - | |||
| 438 | 436 | - | 22.3 | 231 | - | ||
| 613 | - | 23 | 34.2 | 222 | 211 |
Heat treated : 1358°C - 1657°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| SAE HEVl | |||
| SAE HEVl | |||
| R30155 | |||
| R30155 | |||
| UNS R30155 | |||
| UNS R30155 |
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