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Description

M-308 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: M-308

Chemical composition(mass fraction)(wt.%) of the M-308

C
Si
Mn
P
S
Cr Ni
0.08         14 33
Mo Al Cu Nb Ti V Fe
4 0.25     2   ...
N Co Pb B Other    
        W 6.5
Zr 0.25
   
             

Mechanical Properties of steel grade M-308

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)
238 (≥) 655 (≥) 22 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade M-308

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
22 - -     0.34 -  
866 556 - 44.3 323   -  
441 - 13 14.2   322 241

Heat Treatment of steel grade M-308

Heat treated : 1483°C - 1792°C

Technological Curves of steel grade M-308


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