USA ASTM AMS 6514, ASTM A 538, Mil-S-46850D, UNS K93120, 18Ni Maraging Steel Superalloys Typical applications for maraging include missile and rocket motor cases, landing and takeoff gear, munitions, aerospace, extrusion tooling, die casting, high performance shafting, gears and fasteners. and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.
Category | Class | Grade | Type | Standard | Country | Application |
---|---|---|---|---|---|---|
Steel Grades | Superalloys | 18Ni Maraging Steel | Martensite | ASTM | USA | Typical applications for maraging include missile and rocket motor cases, landing and takeoff gear, munitions, aerospace, extrusion tooling, die casting, high performance shafting, gears and fasteners. |
C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Co | Al | Ti | Fe |
---|---|---|---|---|---|---|---|---|---|---|---|---|
≤0.03 | ≤0.10 | ≤0.10 | ≤0.010 | ≤0.010 | ≤0.50 | 18.00 -19.00 | 4.60 -5.20 | ≤0.50 | 8.50 -9.50 | 0.05 -0.15 | 0.50 -0.80 | ≤Bal |
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) |
---|---|---|---|---|---|---|
189 (≥) | 798 (≥) | 12 | 44 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 141 |
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 |
---|---|---|---|---|---|---|---|
32 | - | - | 0.33 | - | |||
583 | 879 | - | 42.3 | 341 | - | ||
562 | - | 13 | 13.2 | 434 | 342 |
Heat treated : 1998°C - 1271°C
AMS 6514 | AMS-6514.pdf |
ASTM A 538 | ASTM-A-538.pdf |
Mil-S-46850D | Mil-S-46850D.pdf |
UNS K93120 | UNS-K93120.pdf |
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