UK B.S. BS 970-4, 331S42 Specialsteel Specification for wrought steels for mechanical and allied engineering purposes. Valve steels and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 331S42 | B.S. | UK | Specification for wrought steels for mechanical and allied engineering purposes. Valve steels |
| C | Si | Mn | P | S | Cr | Ni | Mo | W |
|---|---|---|---|---|---|---|---|---|
| 0.37 -0.47 | 1.00 -2.00 | 0.50 -1.00 | ≤0.040 | ≤0.030 | 13.00 -15.00 | 13.00 -15.00 | 0.40 -0.70 | 2.20 -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) |
|---|---|---|---|---|---|---|
| 865 (≥) | 436 (≥) | 32 | 12 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 212 |
| 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 |
|---|---|---|---|---|---|---|---|
| 13 | - | - | 0.33 | - | |||
| 821 | 284 | - | 12.3 | 414 | - | ||
| 237 | - | 41 | 32.2 | 214 | 433 |
Heat treated : 1591°C - 1776°C
| BS 970-4 | Specification for wrought steels for mechanical and allied engineering purposes. Valve steels | BS-970-4.pdf |
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