China GB GB/T 8732 (2004) , S47450 Specialsteel Steels of blade for steam turbine and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | S47450 | GB | China | Steels of blade for steam turbine |
C | Mn | P | S | Si | Ni | Cr | Mo | Cu | V | Al | N | Nb |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.1500 -0.2000 | 0.5000 -0.8000 | ≤0.0200 | ≤0.0150 | ≤0.5000 | 0.3000 -0.6000 | 10.0000 -12.0000 | 0.6000 -0.9000 | ≤0.1000 | 0.2000 -0.3000 | ≤0.0300 | 0.0400 -0.0900 | 0.2000 -0.6000 |
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) |
---|---|---|---|---|---|---|
591 (≥) | 263 (≥) | 22 | 13 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 134 |
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 |
---|---|---|---|---|---|---|---|
43 | - | - | 0.22 | - | |||
561 | 698 | - | 11.3 | 232 | - | ||
372 | - | 43 | 13.2 | 213 | 312 |
Heat treated : 1934°C - 1684°C
GB/T 8732 (2004) | Steels of blade for steam turbine | GB-T-8732--(2004)-.pdf |
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