Korea KS D 3731 (2002), STR35 Specialsteel Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | STR35 | Austenite | KS | Korea | Heat - resisting steel bars |
| C | Si | Mn | P | S | Cr | Ni | Mo | N |
|---|---|---|---|---|---|---|---|---|
| 0.48 -0.58 | ≤0.35 | 8.00 -10.00 | ≤0.040 | ≤0.030 | 20.00 -22.00 | 3.25 -4.50 | ≤ ≥ | 0.35 -0.50 |
| 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) |
|---|---|---|---|---|---|---|
| 118 (≥) | 876 (≥) | 22 | 34 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 244 |
| 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 | - | - | 0.32 | - | |||
| 638 | 635 | - | 34.3 | 342 | - | ||
| 699 | - | 24 | 32.2 | 224 | 332 |
Heat treated : 1914°C - 1963°C
| D 3731 (2002) | Heat - resisting steel bars | D-3731-(2002).pdf |
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