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G40CrMnNiMo8-6-4

International ISO G40CrMnNiMo8-6-4 Steel — Cast tool steel and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals G40CrMnNiMo8-6-4 ISO 10679 International Steel — Cast tool steel

Chemical composition(mass fraction)(wt.%) of the G40CrMnNiMo8-6-4

Element Min Max Similar
V - 0.1500 -
Ti - 0.0500 -
Si - 0.6000 -
S - 0.0150 -
P - 0.0250 -
Ni - 0.8000 -
Nb - 0.0700 -
N - 0.0120 -
Mo - 0.3000 -
Mn 1.0000 1.7000 -
Cu - 0.5500 -
Cr - 0.6000 -
CEV - 0.4600 -
C - 0.2000 -
Al 0.0150 - -

Mechanical Properties of steel grade G40CrMnNiMo8-6-4

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)
985 (≥) 823 (≥) 33 24 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade G40CrMnNiMo8-6-4

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 - -     0.31 -  
723 281 - 13.3 113   -  
122 - 44 23.2   211 132

Heat Treatment of steel grade G40CrMnNiMo8-6-4

Heat treated : 1378°C - 1739°C

Technological Curves of steel grade G40CrMnNiMo8-6-4

Cross Reference Table (Equivalent Grade) of G40CrMnNiMo8-6-4

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