USA UNS EVl4 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | EVl4 | UNS | USA | Steel for exhaust valves | 
| C | Si | Mn | P | S | Cr | Ni | N | 
|---|---|---|---|---|---|---|---|
| 0.20 - ≥ | 0.40 - ≥ | 6.50 - ≥ | ≤ ≥ | ≤ ≥ | 21.0 - ≥ | 5.50 - ≥ | 0.20 - ≥ | 
| 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) | 
|---|---|---|---|---|---|---|
| 447 (≥) | 598 (≥) | 24 | 44 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 322 | 
| 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 | - | - | 0.14 | - | |||
| 775 | 992 | - | 34.3 | 122 | - | ||
| 989 | - | 11 | 32.2 | 344 | 122 | 
Heat treated : 1939°C - 1592°C
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