China GB GB/T 14992 (1994) , GB/T 14995 (2010) , GB/T 14996 (2010) , GH2018 Specialsteel Classification and designation for superalloys and high temperature intermetallic materials and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Standard | Country | Application |
---|---|---|---|---|---|
Steel Grades | Specialsteel | GH2018 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials |
C | Cr | Mo | Ni | W | Al | Ti | Si | Mn | P | S | B | Ce | Zr |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
≤0.06 | 18.0 -21.0 | 3.70 -4.30 | 40.0 -44.0 | 1.80 -2.20 | 0.35 -0.75 | 1.80 -2.20 | ≤0.60 | ≤0.50 | ≤0.020 | ≤0.015 | ≤0.015 | ≤0.02 | ≤0.05 |
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) |
---|---|---|---|---|---|---|
474 (≥) | 116 (≥) | 14 | 11 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 |
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 |
---|---|---|---|---|---|---|---|
42 | - | - | 0.41 | - | |||
748 | 147 | - | 12.3 | 141 | - | ||
541 | - | 43 | 41.2 | 234 | 314 |
Heat treated : 1244°C - 1389°C
Grade | Standard | Country | Application |
---|---|---|---|
GH2018 |
GB/T 14992 (1994) | Classification and designation for superalloys and high temperature intermetallic materials | GB-T-14992--(1994)-.pdf |
GB/T 14995 (2010) | Hot-rolled superalloy sheets | GB-T-14995--(2010)-.pdf |
GB/T 14996 (2010) | Cold-Rolled heat-resisting superalloy sheets | GB-T-14996--(2010)-.pdf |
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