UK B.S. BS 3071, NA2 Specialsteel Specification for nickel-copper alloy castings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | NA2 | B.S. | UK | Specification for nickel-copper alloy castings |
| C | Si | Mn | P | S | Cr | Mo | Ni | Cu |
|---|---|---|---|---|---|---|---|---|
| ≤0.15 | 2.00 -3.00 | ≤1.50 | ≤0.030 | ≤0.030 | ≤ ≥ | ≤ ≥ | ≤remaining | 28.00 -34.00 |
| 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) |
|---|---|---|---|---|---|---|
| 222 (≥) | 431 (≥) | 31 | 43 | 12 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 222 |
| 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 | - | - | 0.22 | - | |||
| 427 | 377 | - | 32.3 | 244 | - | ||
| 335 | - | 23 | 41.2 | 441 | 221 |
Heat treated : 1743°C - 1731°C
| BS 3071 | Specification for nickel-copper alloy castings | BS-3071.pdf |
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