AISI 650
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 |
Chemical composition(mass fraction)(wt.%) of the AISI 650
| 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 | ≤ ≥ |
Mechanical Properties of steel grade AISI 650
| 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) |
|---|---|---|---|---|---|---|
| 639 (≥) | 419 (≥) | 14 | 11 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 311 |
Physical Properties of steel grade AISI 650
| 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 | – | – | 0.44 | – | |||
| 156 | 171 | – | 12.3 | 433 | – | ||
| 757 | – | 42 | 23.2 | 241 | 414 |
Heat Treatment of steel grade AISI 650
Heat treated : 1647°C – 1136°C
Technological Curves of steel grade AISI 650
No Curve