UK B.S. BS 2S 137, 2S.137 Specialsteel Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 2S.137 | B.S. | UK | Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm) | 
| C | Si | Mn | P | S | Cr | Ni | Mo | 
|---|---|---|---|---|---|---|---|
| 0.12 -0.20 | ≤1.00 | ≤1.50 | ≤0.030 | 0.15 -0.30 | 15.00 -18.00 | 2.00 -3.00 | ≤0.60 | 
| 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) | 
|---|---|---|---|---|---|---|
| 732 (≥) | 718 (≥) | 44 | 12 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 242 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 22 | - | - | 0.13 | - | |||
| 677 | 579 | - | 44.3 | 314 | - | ||
| 392 | - | 44 | 43.2 | 242 | 441 | 
Heat treated : 1972°C - 1656°C
| BS 2S 137 | Specification for high chromium-nickel corrosion-resisting steel bright bars (free machining) (880-1080 MPa: limiting ruling section 70 mm) | BS-2S-137.pdf | 
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