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40 NiCrMoV 4

International ISO 40NiCrMoV4 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40NiCrMoV4 / 40 NiCrMoV 4
Category Grade Standard Region/Area Standard Content
Metals 40 NiCrMoV 4 ISO 4957 International 工具钢

Chemical composition(mass fraction)(wt.%) of the 40 NiCrMoV 4

Element Min Max Similar
V 0.0500 0.2500 -
Si 0.1000 0.4000 -
S - 0.0300 -
P - 0.0300 -
Ni 3.6000 4.1000 -
Mo 0.4000 0.6000 -
Mn 0.3500 0.6500 -
Cr 1.7000 2.0000 -
C 0.3500 0.4500 -

Mechanical Properties of steel grade 40 NiCrMoV 4

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)
585 (≥) 453 (≥) 32 31 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 421

Physical Properties of steel grade 40 NiCrMoV 4

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 - -     0.33 -  
349 884 - 43.3 314   -  
229 - 11 23.2   314 214

Heat Treatment of steel grade 40 NiCrMoV 4

Heat treated : 1771°C - 1328°C

Technological Curves of steel grade 40 NiCrMoV 4

Cross Reference Table (Equivalent Grade) of 40 NiCrMoV 4

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