UK B.S. BS 1554, BS 2056, 305S11 Specialsteel Specification for stainless steel wire for mechanical springs and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application |
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | 305S11 | B.S. | UK | Specification for stainless steel wire for mechanical springs |
| C | Si | Mn | P | S | Cr | Mo | Ni |
|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 17.00 -19.00 | ≤ ≥ | 11.00 -13.00 |
| 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) |
|---|---|---|---|---|---|---|
| 495 (≥) | 478 (≥) | 32 | 14 | 21 | 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 |
|---|---|---|---|---|---|---|---|
| 43 | - | - | 0.21 | - | |||
| 646 | 691 | - | 34.3 | 442 | - | ||
| 138 | - | 23 | 33.2 | 111 | 423 |
Heat treated : 1546°C - 1177°C
| BS 1554 | Specification for stainless and heat-resisting steel round wire | BS-1554.pdf |
| BS 2056 | Specification for stainless steel wire for mechanical springs | BS-2056.pdf |
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