USA UNS SAE J 467 (1968), HS-21 Specialsteel Special Purpose Alloys ("Superalloys") and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | HS-21 | Precipitation-Hardening | UNS | USA | Special Purpose Alloys ("Superalloys") | 
| C | Si | Mn | Ni | Cr | Al | Cu | Ti | Fe | Mo | Co | B | 
|---|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.25 | ≤ ≥ | ≤ ≥ | ≤2.50 | ≤27.00 | ≤ ≥ | ≤ ≥ | ≤ ≥ | ≤1.75 | ≤5.50 | ≤remaining | ≤0.007 | 
| 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) | 
|---|---|---|---|---|---|---|
| 254 (≥) | 189 (≥) | 11 | 23 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 423 | 
| 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 | - | - | 0.14 | - | |||
| 392 | 428 | - | 22.3 | 141 | - | ||
| 394 | - | 11 | 21.2 | 111 | 231 | 
Heat treated : 1926°C - 1724°C
| Grade | Standard | Country | Application | 
|---|---|---|---|
| HS-21 | 
| SAE J 467 (1968) | Special Purpose Alloys ("Superalloys") | SAE-J-467-(1968).pdf | 
Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...
Rfq.: sales@longhaisteel.com