Marage 300 Stainless Steels to SAE AMS 6521C (1983)

Marage 300 - Specification & Application

  • 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

Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated

Chemical composition(wt.%) of Marage 300 grade: to SAE AMS 6521C (1983)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Si - 0.10
Mn - 0.10
Ni - 18.00
Cr - -
Al - 0.10
Cu - -
Ti - 0.40
Fe - -
Mo - 5.00
Co - 8.00

Marage 300 - Detail

Steel Sheet, Strip, and Plate, Maraging 18.5Ni - 9.0Co - 4.9Mo - 0.65Ti - 0.10AI Consumable Electrode Melted, Solution Heat Treated

Mechanical properties of grade Marage 300 SAE AMS 6521C (1983)

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
653 (≥) 262 (≥) 42 23 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 122

Physical properties of grade Marage 300 SAE AMS 6521C (1983)

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
364 (≥) 372 (≥) 34 22 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 312
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
166 497 913

Equivalent Products

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