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55 CrNiMoV 4

France AFNOR NF 55CrNiMoV4 工具钢 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 55CrNiMoV4 / 55 CrNiMoV 4
Category Grade Standard Region/Area Standard Content
Metals 55 CrNiMoV 4 NF A35-590 France 工具钢

Chemical composition(mass fraction)(wt.%) of the 55 CrNiMoV 4

Element Min Max Similar
V 0.0500 0.1500 -
Si 0.1000 0.4000 -
S - 0.0250 -
P - 0.0250 -
Ni 0.4500 0.7500 -
Mo 0.3000 0.5000 -
Mn 0.6000 1.0000 -
Cr 0.8500 1.1500 -
C 0.5000 0.6000 -

Mechanical Properties of steel grade 55 CrNiMoV 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)
666 (≥) 559 (≥) 11 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade 55 CrNiMoV 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
21 - -     0.33 -  
982 876 - 22.3 231   -  
117 - 23 44.2   433 142

Heat Treatment of steel grade 55 CrNiMoV 4

Heat treated : 1169°C - 1655°C

Technological Curves of steel grade 55 CrNiMoV 4

Cross Reference Table (Equivalent Grade) of 55 CrNiMoV 4

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