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America SAE 300M Special Purpose Alloys (Superalloys) and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 300M / 300M
Category Grade Standard Region/Area Standard Content
Metals 300M SAE J 467B America Special Purpose Alloys (Superalloys)

Chemical composition(mass fraction)(wt.%) of the 300M

Element Min Max Similar

Mechanical Properties of steel grade 300M

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)
519 (≥) 174 (≥) 41 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 300M

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
23 - -     0.31 -  
242 883 - 32.3 313   -  
556 - 22 32.2   314 232

Heat Treatment of steel grade 300M

Heat treated : 1244°C - 1296°C

Technological Curves of steel grade 300M

Cross Reference Table (Equivalent Grade) of 300M

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