China GBT 1J80 non-retentive alloy and 1J80 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | 1J80 | GBT | China | non-retentive alloy | 
| 1J50 | 
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| 1J51 | 
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| 1J52 | 
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| 1J54 | 
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| 1J65 | 
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| 1J66 | 
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| 1J67 | 
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| 1J76 | 
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| 1J77 | 
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| 1J79 | 
                                
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Cr(%) | Ni(%) | Cu(%) | Fe(%) | 
|---|---|---|---|---|---|---|---|---|
| 0.03 | 1.10-1.50 | 0.60-1.10 | 0.020 | 0.020 | 2.6-3.0 | 79.0-81.5 | ≤0.2 | Bal | 
| 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) | 
|---|---|---|---|---|---|---|
| 719 (≥) | 348 (≥) | 44 | 41 | 41 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 413 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 12 | - | - | 0.12 | - | |||
| 145 | 525 | - | 41.3 | 313 | - | ||
| 178 | - | 43 | 43.2 | 233 | 411 | 
Heat treated : 1363°C - 1423°C
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