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55NiCrMoV7

France AFNOR NF 55NiCrMoV7 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 55NiCrMoV7 / 55NiCrMoV7
Category Grade Standard Region/Area Standard Content
Metals 55NiCrMoV7 NF EN ISO 4957 France 工具钢

Chemical composition(mass fraction)(wt.%) of the 55NiCrMoV7

Element Min Max Similar

Mechanical Properties of steel grade 55NiCrMoV7

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)
323 (≥) 847 (≥) 41 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade 55NiCrMoV7

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
24 - -     0.31 -  
335 632 - 44.3 142   -  
218 - 34 11.2   434 324

Heat Treatment of steel grade 55NiCrMoV7

Heat treated : 1823°C - 1281°C

Technological Curves of steel grade 55NiCrMoV7

Cross Reference Table (Equivalent Grade) of 55NiCrMoV7

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