China GB GB/T 14992 (2005) , GB/T 14995 (2010) , GB/T 14996 (2010) , GH3128 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 | GH3128 | GB | China | Classification and designation for superalloys and high temperature intermetallic materials | 
| C | Cr | Mo | Ni | W | Al | Ti | Fe | Si | Mn | P | S | B | Ce | Zr | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.05 | 19.0 -22.00 | 7.50 -9.00 | ≤Remainder | 7.50 -9.00 | 0.40 -0.80 | 0.40 -0.80 | ≤2.0 | ≤0.80 | ≤0.50 | ≤0.013 | ≤0.013 | ≤0.005 | ≤0.05 | ≤0.06 | 
| 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) | 
|---|---|---|---|---|---|---|
| 184 (≥) | 673 (≥) | 21 | 41 | 32 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 41 | - | - | 0.41 | - | |||
| 348 | 552 | - | 12.3 | 221 | - | ||
| 778 | - | 23 | 14.2 | 111 | 214 | 
Heat treated : 1795°C - 1817°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| GH3128 | 
| GB/T 14992 (2005) | Classification and designation for superalloys and high temperature intermetallic materials | GB-T-14992--(2005)--.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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