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40CrNi3MoA

China GJB 40CrNi3MoA 航空用高纯洁度合金结构钢棒规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40CrNi3MoA / 40CrNi3MoA
Category Grade Standard Region/Area Standard Content
Metals 40CrNi3MoA GJB 6487 China 航空用高纯洁度合金结构钢棒规范

Chemical composition(mass fraction)(wt.%) of the 40CrNi3MoA

Element Min Max Similar
Cu - 0.2000 -
Mo 0.4500 0.6500 -
Ni 2.3000 2.8000 -
Cr 0.5000 0.8000 -
S - 0.0200 -
P - 0.0250 -
Mn 0.4500 0.7000 -
Si 0.1000 0.3500 -
C 0.3600 0.4400 -

Mechanical Properties of steel grade 40CrNi3MoA

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)
383 (≥) 515 (≥) 43 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 40CrNi3MoA

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
42 - -     0.42 -  
233 929 - 41.3 311   -  
879 - 22 42.2   442 432

Heat Treatment of steel grade 40CrNi3MoA

Heat treated : 1764°C - 1294°C

Technological Curves of steel grade 40CrNi3MoA

Cross Reference Table (Equivalent Grade) of 40CrNi3MoA

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