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MAR-M 302

America SAE MAR-M302 Special Purpose Alloys (Superalloys) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: MAR-M302 / MAR-M 302
Category Grade Standard Region/Area Standard Content
Metals MAR-M 302 SAE J 467B America Special Purpose Alloys (Superalloys)

Chemical composition(mass fraction)(wt.%) of the MAR-M 302

Element Min Max Similar
Zr - - 0.2000
W - - 10.0000
Ta - - 9.0000
Si - - 0.2000
Mn - - 0.1000
Fe - - 0.7000
Cr - - 21.5000
Co - - -
C - - 0.8500
B - - 0.0050

Mechanical Properties of steel grade MAR-M 302

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)
739 (≥) 821 (≥) 24 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade MAR-M 302

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
41 - -     0.34 -  
557 653 - 24.3 112   -  
139 - 31 13.2   111 343

Heat Treatment of steel grade MAR-M 302

Heat treated : 1952°C - 1129°C

Technological Curves of steel grade MAR-M 302

Cross Reference Table (Equivalent Grade) of MAR-M 302

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