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ML40CrNiMoA

China GB ML40CrNiMoA 冷顶锻用合金结构钢丝 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ML40CrNiMoA / ML40CrNiMoA
Category Grade Standard Region/Area Standard Content
Metals ML40CrNiMoA GB 5954 China 冷顶锻用合金结构钢丝

Chemical composition(mass fraction)(wt.%) of the ML40CrNiMoA

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0300 -
P - 0.0300 -
Ni 1.2500 1.7500 -
Mo 0.1500 0.2500 -
Mn 0.5000 0.8000 -
Cu - 0.2000 -
Cr 0.6000 0.9000 -
C 0.3600 0.4400 -

Mechanical Properties of steel grade ML40CrNiMoA

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)
947 (≥) 642 (≥) 32 44 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade ML40CrNiMoA

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
34 - -     0.13 -  
518 321 - 24.3 211   -  
948 - 13 43.2   424 231

Heat Treatment of steel grade ML40CrNiMoA

Heat treated : 1237°C - 1514°C

Technological Curves of steel grade ML40CrNiMoA

Cross Reference Table (Equivalent Grade) of ML40CrNiMoA

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