Korea KS D 3691 (2001), STS431FB Specialsteel Stainless steel blooms and billets for forgings and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | STS431FB | Martensite | KS | Korea | Stainless steel blooms and billets for forgings |
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| ≤0.20 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 15.00 -17.00 | 1.25 -2.50 | ≤ ≥ | ≤ ≥ |
| 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) |
|---|---|---|---|---|---|---|
| 779 (≥) | 371 (≥) | 31 | 32 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 141 |
| 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 |
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.31 | - | |||
| 763 | 187 | - | 41.3 | 144 | - | ||
| 432 | - | 41 | 24.2 | 422 | 132 |
Heat treated : 1189°C - 1885°C
| D 3691 (2001) | Stainless steel blooms and billets for forgings | D-3691-(2001).pdf |
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