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France AFNOR NF 70MCD8 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 70MCD8 / 70 MCD 8
Category Grade Standard Region/Area Standard Content
Metals 70 MCD 8 NF A35-590 France 工具钢

Chemical composition(mass fraction)(wt.%) of the 70 MCD 8

Element Min Max Similar

Mechanical Properties of steel grade 70 MCD 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)
522 (≥) 197 (≥) 23 13 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade 70 MCD 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
22 - -     0.13 -  
384 915 - 21.3 142   -  
835 - 23 33.2   422 322

Heat Treatment of steel grade 70 MCD 8

Heat treated : 1851°C - 1648°C

Technological Curves of steel grade 70 MCD 8

Cross Reference Table (Equivalent Grade) of 70 MCD 8

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