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Description

M-252 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: M-252

Chemical composition(mass fraction)(wt.%) of the M-252

C
Si
Mn
P
S
Cr Ni
0.15 0.5 0.5     20 ...
Mo Al Cu Nb Ti V Ce
10 1     2.6    
N Co Pb B Other    
  10   0.005      
             

Mechanical Properties of steel grade M-252

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)
638 (≥) 787 (≥) 22 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade M-252

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
43 - -     0.44 -  
342 845 - 13.3 434   -  
171 - 32 31.2   442 444

Heat Treatment of steel grade M-252

Heat treated : 1169°C - 1128°C

Technological Curves of steel grade M-252


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