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40 CrMoV 4 7

Germany DIN 40CrMoV47 Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts; Quality Specifications and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40CrMoV47 / 40 CrMoV 4 7
Category Grade Standard Region/Area Standard Content
Metals 40 CrMoV 4 7 DIN 17240 Germany Heat Resisting and Highly Heat Resisting Materials for Bolts and Nuts; Quality Specifications

Chemical composition(mass fraction)(wt.%) of the 40 CrMoV 4 7

Element Min Max Similar
V 0.2500 0.3500 -
Si 0.1500 0.3500 -
S - 0.0350 -
P - 0.0300 -
Mo 0.6000 0.7500 -
Mn 0.3500 0.8500 -
Cr 0.9000 1.2000 -
C 0.3600 0.4400 -

Mechanical Properties of steel grade 40 CrMoV 4 7

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)
329 (≥) 448 (≥) 34 41 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade 40 CrMoV 4 7

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
44 - -     0.12 -  
561 693 - 12.3 231   -  
184 - 12 21.2   243 444

Heat Treatment of steel grade 40 CrMoV 4 7

Heat treated : 1159°C - 1466°C

Technological Curves of steel grade 40 CrMoV 4 7

Cross Reference Table (Equivalent Grade) of 40 CrMoV 4 7

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