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70 MnCrMo 8

France AFNOR NF 70MnCrMo8 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 70MnCrMo8 / 70 MnCrMo 8
Category Grade Standard Region/Area Standard Content
Metals 70 MnCrMo 8 NF A35-590 France 工具钢

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

Element Min Max Similar

Mechanical Properties of steel grade 70 MnCrMo 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)
632 (≥) 184 (≥) 13 11 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 241

Physical Properties of steel grade 70 MnCrMo 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
44 - -     0.13 -  
729 456 - 41.3 324   -  
732 - 41 44.2   412 334

Heat Treatment of steel grade 70 MnCrMo 8

Heat treated : 1231°C - 1145°C

Technological Curves of steel grade 70 MnCrMo 8

Cross Reference Table (Equivalent Grade) of 70 MnCrMo 8

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