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France AFNOR NF 40CMD8 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40CMD8 / 40 CMD 8
Category Grade Standard Region/Area Standard Content
Metals 40 CMD 8 NF A35-590 France 工具钢

Chemical composition(mass fraction)(wt.%) of the 40 CMD 8

Element Min Max Similar
Si 0.1500 0.4000 -
Mo 0.1500 0.3000 -
Mn 1.3500 1.6500 -
Cr 1.7500 2.1500 -
C 0.3500 0.4500 -

Mechanical Properties of steel grade 40 CMD 8

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)
363 (≥) 759 (≥) 44 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 413

Physical Properties of steel grade 40 CMD 8

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 - -     0.14 -  
584 521 - 23.3 131   -  
449 - 34 31.2   342 332

Heat Treatment of steel grade 40 CMD 8

Heat treated : 1915°C - 1711°C

Technological Curves of steel grade 40 CMD 8

Cross Reference Table (Equivalent Grade) of 40 CMD 8

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