USA UNS HNV4 Specialsteel Steel for intake valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | HNV4 | UNS | USA | Steel for intake valves |
| C | Si | Mn | P | S | Cr | Ni |
|---|---|---|---|---|---|---|
| 0.45 - | 3.30 - | 0.40 - | - | - | 7.00 - | 1.00 - ≥ |
| 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) |
|---|---|---|---|---|---|---|
| 426 (≥) | 593 (≥) | 23 | 13 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 443 |
| 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 |
|---|---|---|---|---|---|---|---|
| 42 | - | - | 0.41 | - | |||
| 757 | 462 | - | 44.3 | 112 | - | ||
| 358 | - | 32 | 32.2 | 243 | 433 |
Heat treated : 1429°C - 1534°C
| Grade | Standard | Country | Application |
|---|---|---|---|
| HNV4 | |||
| SAE HNV4 | |||
| SAE HNV4 | |||
| 1.2731 | |||
| 1.4731 | |||
| 1.2731 | |||
| 1.7311 | |||
| 1.7319 | |||
| IN-731 | |||
| 1.2731 | |||
| 1.2731 | |||
| 1.4731 | |||
| 1.4731 |
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