Korea KS D 3691 (2001), STS420J1FB 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 | STS420J1FB | Martensite | KS | Korea | Stainless steel blooms and billets for forgings | 
| C | Si | Mn | P | S | Cr | Ni | Mo | N | 
|---|---|---|---|---|---|---|---|---|
| 0.16 -0.25 | ≤1.00 | ≤1.00 | ≤0.040 | ≤0.030 | 12.00 -14.00 | ≤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) | 
|---|---|---|---|---|---|---|
| 339 (≥) | 895 (≥) | 24 | 41 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 31 | - | - | 0.42 | - | |||
| 766 | 611 | - | 12.3 | 231 | - | ||
| 183 | - | 21 | 24.2 | 143 | 331 | 
Heat treated : 1492°C - 1768°C
| D 3691 (2001) | Stainless steel blooms and billets for forgings | D-3691-(2001).pdf | 
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