UK B.S. BS 1503, BS 1554, BS 5770-4, BS 970-1, BS 970-3, 420S29 Specialsteel Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | 420S29 | B.S. | UK | Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes |
C | Si | Mn | P | S | Cr | Mo | Ni |
---|---|---|---|---|---|---|---|
0.14 -0.20 | ≤1.00 | ≤1.00 | ≤0.04 | ≤0.03 | 11.50 -13.50 | ≤ ≥ | ≤1.00 |
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) |
---|---|---|---|---|---|---|
557 (≥) | 173 (≥) | 43 | 22 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 233 |
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 | - | - | 0.42 | - | |||
579 | 871 | - | 12.3 | 232 | - | ||
174 | - | 23 | 11.2 | 122 | 313 |
Heat treated : 1884°C - 1732°C
BS 1503 | Specification for steel forgings for pressure purposes | BS-1503.pdf |
BS 1554 | Specification for stainless and heat-resisting steel round wire | BS-1554.pdf |
BS 5770-4 | Steel strip intended for the manufacture of springs. Specification for martensitic and austenitic stainless steel | BS-5770-4.pdf |
BS 970-1 | Specification for wrought steels for mechanical and allied engineering purposes. General inspection and testing procedures and specific requirements for carbon, carbon manganese, alloy and stainless steels | BS-970-1.pdf |
BS 970-3 | Specification for wrought steels for mechanical and allied engineering purposes. Bright bars for general engineering purposes | BS-970-3.pdf |
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