UK B.S. BS S 538, S.538 Specialsteel Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel sheet and strip (930-1130 MPa: maximum thickness 6 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | S.538 | B.S. | UK | Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel sheet and strip (930-1130 MPa: maximum thickness 6 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3) | 
| C | Si | Mn | P | S | Cr | Ni | Mo | Nb/Ti | V | N | 
|---|---|---|---|---|---|---|---|---|---|---|
| 0.08 -0.16 | ≤0.35 | 0.50 -0.90 | ≤0.030 | ≤0.025 | 11.00 -12.50 | 2.00 -3.00 | 1.50 -2.00 | ≤ ≥ | 0.25 -0.40 | 0.02 -0.04 | 
| 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) | 
|---|---|---|---|---|---|---|
| 812 (≥) | 363 (≥) | 44 | 32 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 344 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.31 | - | |||
| 433 | 524 | - | 11.3 | 122 | - | ||
| 939 | - | 23 | 21.2 | 214 | 233 | 
Heat treated : 1584°C - 1269°C
| BS S 538 | Specification for chromium-nickel-molybdenum-vanadium heat-resisting steel sheet and strip (930-1130 MPa: maximum thickness 6 mm) (Cr 12, Ni 2.5, Mo 1.7, V 0.3) | BS-S-538.pdf | 
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