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40CrNiMoA

China GJB 40CrNiMoA 火炮零件用无缝钢管规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40CrNiMoA / 40CrNiMoA
Category Grade Standard Region/Area Standard Content
Metals 40CrNiMoA GJB 6483 China 火炮零件用无缝钢管规范

Chemical composition(mass fraction)(wt.%) of the 40CrNiMoA

Element Min Max Similar
C 0.3600 0.4400 -
Mn 0.5000 0.8000 -
Si 0.1700 0.3700 -
Cr 0.6000 0.9000 -
Ni 1.2500 1.7500 -
Mo 0.1500 0.2500 -
S - 0.0250 -
P - 0.0250 -
Cu - 0.2500 -
W - 0.2000 -
V - 0.0500 -
Ti - 0.0300 -
C 0.3600 0.4400 -
Mn 0.5000 0.8000 -
Si 0.1700 0.3700 -
Cr 0.6000 0.9000 -
Ni 1.2500 1.7500 -
Mo 0.1500 0.2500 -
S - 0.0250 -
P - 0.0250 -
Cu - 0.2500 -
W - 0.2000 -
V - 0.0500 -
Ti - 0.0300 -
C 0.3700 0.4400 -
Si 0.1700 0.3700 -
Mn 0.5000 0.8000 -
P - 0.0250 -
S - 0.0200 -
Cr 0.6000 0.9000 -
Ni 1.2500 1.6500 -
Mo 0.1500 0.2500 -
Cu - 0.2500 -

Mechanical Properties of steel grade 40CrNiMoA

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)
515 (≥) 767 (≥) 24 13 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade 40CrNiMoA

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
11 - -     0.23 -  
227 626 - 13.3 232   -  
185 - 42 43.2   431 311

Heat Treatment of steel grade 40CrNiMoA

Heat treated : 1967°C - 1168°C

Technological Curves of steel grade 40CrNiMoA

Cross Reference Table (Equivalent Grade) of 40CrNiMoA

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