UK B.S. BS S 144, 2S.144 Specialsteel Specification for chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1130-1330 MPa) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 2S.144 | B.S. | UK | Specification for chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1130-1330 MPa) | 
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb | Cu | 
|---|---|---|---|---|---|---|---|---|---|
| ≤0.07 | ≤0.60 | ≤1.00 | ≤0.035 | ≤0.025 | 13.20 -14.70 | 5.00 -5.80 | 1.20 -2.00 | 0.10 -0.40 | 1.20 -2.00 | 
| 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) | 
|---|---|---|---|---|---|---|
| 469 (≥) | 573 (≥) | 12 | 23 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.32 | - | |||
| 725 | 346 | - | 12.3 | 212 | - | ||
| 911 | - | 21 | 14.2 | 311 | 111 | 
Heat treated : 1365°C - 1616°C
| BS S 144 | Specification for chromium-nickel-copper-molybdenum corrosion resisting steel (precipitation hardening) billets, bars, forgings and parts (1130-1330 MPa) | BS-S-144.pdf | 
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