China GBT 1J91 non-retentive alloy and 1J91 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Type | Steel Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Special Alloy | 1J91 | GBT | China | non-retentive alloy | 
| 1J91 | 
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| 1J87 | 
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| 1J88 | 
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| 1J89 | 
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| 1J90 | 
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| 1J91 | 
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| 1J87 | 
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| 1J88 | 
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| 1J89 | 
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| 1J90 | 
                                
| C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Nb(%) | Al(%) | Fe(%) | 
|---|---|---|---|---|---|---|---|---|
| 0.03 | ≤0.30 | ≤0.60 | 0.020 | 0.020 | 78.5-80.0 | 7.7-8.4 | 0.90-1.20 | 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) | 
|---|---|---|---|---|---|---|
| 933 (≥) | 399 (≥) | 31 | 43 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 323 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 23 | - | - | 0.42 | - | |||
| 557 | 927 | - | 44.3 | 414 | - | ||
| 363 | - | 11 | 43.2 | 324 | 422 | 
Heat treated : 1159°C - 1672°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| 1J91 | GBT | China | non-retentive alloy | 
| 1J91 | GBT | China | non-retentive alloy | 
| 1J91 | GBT | China | non-retentive alloy | 
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