USA ASTM SAE AMS 6520D (1995), Marage 250 Specialsteel Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 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 250 | Precipitation-Hardening | ASTM | USA | Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 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) |
---|---|---|---|---|---|---|
946 (≥) | 476 (≥) | 23 | 13 | 33 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 232 |
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 |
---|---|---|---|---|---|---|---|
33 | - | - | 0.12 | - | |||
233 | 657 | - | 22.3 | 143 | - | ||
742 | - | 13 | 43.2 | 443 | 421 |
Heat treated : 1756°C - 1355°C
SAE AMS 6520D (1995) | Steel, Maraging, Sheet, Strip, and Plate 18Ni - 7.8Co - 4.9Mo - 0.40Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated | SAE-AMS-6520D-(1995).pdf |
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