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) |
|---|---|---|---|---|---|---|
| 171 (≥) | 826 (≥) | 43 | 13 | 24 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 |
| 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 |
|---|---|---|---|---|---|---|---|
| 33 | - | - | 0.41 | - | |||
| 797 | 784 | - | 43.3 | 414 | - | ||
| 469 | - | 31 | 22.2 | 431 | 332 |
Heat treated : 1925°C - 1434°C
| D 3731 (2002) | Heat - resisting steel bars | D-3731-(2002).pdf |
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