USA ASTM SAE AMS 6521C (1983), Marage 300 Specialsteel Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
| Category | Class | Grade | Type | Standard | Country | Application | 
|---|---|---|---|---|---|---|
| Steel Grades | Specialsteel | Marage 300 | Precipitation-Hardening | ASTM | USA | Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated | 
| C | Si | Mn | Ni | Cr | Al | Cu | Ti | Fe | Mo | Co | 
|---|---|---|---|---|---|---|---|---|---|---|
| ≤0.03 | ≤0.10 | ≤0.10 | ≤18.00 | ≤ ≥ | ≤0.10 | ≤ ≥ | ≤0.40 | ≤ ≥ | ≤5.00 | ≤8.00 | 
| 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) | 
|---|---|---|---|---|---|---|
| 539 (≥) | 189 (≥) | 22 | 42 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 243 | 
| 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 | 
|---|---|---|---|---|---|---|---|
| 14 | - | - | 0.34 | - | |||
| 666 | 667 | - | 21.3 | 433 | - | ||
| 633 | - | 41 | 21.2 | 133 | 322 | 
Heat treated : 1435°C - 1559°C
| SAE AMS 6521C (1983) | Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated | SAE-AMS-6521C-(1983).pdf | 
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