Korea KS D 3731 (2002), STR11 Specialsteel Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application |
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | STR11 | Martensite | KS | Korea | Heat - resisting steel bars |
| C | Si | Mn | P | S | Cr | Ni | Mo | N | Cu |
|---|---|---|---|---|---|---|---|---|---|
| 0.45 -0.55 | ≤1.00 | ≤2.00 | ≤0.03 | ≤0.03 | 7.50 -9.50 | ≤0.60 | ≤ ≥ | ≤ ≥ | ≤0.30 |
| 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) |
|---|---|---|---|---|---|---|
| 112 (≥) | 962 (≥) | 41 | 34 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 111 |
| 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 |
|---|---|---|---|---|---|---|---|
| 24 | - | - | 0.12 | - | |||
| 345 | 844 | - | 23.3 | 324 | - | ||
| 929 | - | 14 | 33.2 | 134 | 122 |
Heat treated : 1285°C - 1523°C
| D 3731 (2002) | Heat - resisting steel bars | D-3731-(2002).pdf |
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