USA ASTM ASTM A458, AISI 650 Specialsteel Specification for Hot-Worked, Hot-Cold-Worked, and Cold-Worked Alloy Steel Bars for High Strength at Elevated Temperatures and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Standard | Country | Application | 
|---|---|---|---|---|---|
| Steel Grades | Specialsteel | AISI 650 | ASTM | USA | Specification for Hot-Worked, Hot-Cold-Worked, and Cold-Worked Alloy Steel Bars for High Strength at Elevated Temperatures | 
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Ti | W | N | Fe | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.12 | 0.50 -1.00 | 1.00 -2.00 | ≤0.02 | ≤0.01 | 15.00 -17.00 | 24.00 -27.00 | 5.50 -7.00 | ≤0.30 | ≤0.20 | ≤0.20 | 0.10 -0.20 | ≤ ≥ | 
| 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) | 
|---|---|---|---|---|---|---|
| 734 (≥) | 832 (≥) | 32 | 31 | 31 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 121 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 11 | - | - | 0.41 | - | |||
| 118 | 967 | - | 22.3 | 314 | - | ||
| 564 | - | 41 | 11.2 | 413 | 141 | 
Heat treated : 1394°C - 1946°C
| ASTM A458 | Specification for Hot-Worked, Hot-Cold-Worked, and Cold-Worked Alloy Steel Bars for High Strength at Elevated Temperatures | ASTM-A458.pdf | 
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