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France AFNOR NF 40NCD2 Non standardized steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 40NCD2 / 40 NCD 2
Category Grade Standard Region/Area Standard Content
Metals 40 NCD 2 -- France Non standardized steels

Chemical composition(mass fraction)(wt.%) of the 40 NCD 2

Element Min Max Similar
Si 0.1000 0.4000 -
S - 0.0350 -
P - 0.0400 -
Ni 0.4000 0.7000 -
Mo 0.1500 0.3000 -
Mn 0.6000 0.9000 -
Cr 0.4000 0.6000 -
C 0.3700 0.4400 -

Mechanical Properties of steel grade 40 NCD 2

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)
432 (≥) 493 (≥) 23 34 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade 40 NCD 2

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
12 - -     0.31 -  
488 269 - 23.3 114   -  
169 - 32 12.2   324 211

Heat Treatment of steel grade 40 NCD 2

Heat treated : 1854°C - 1463°C

Technological Curves of steel grade 40 NCD 2

Cross Reference Table (Equivalent Grade) of 40 NCD 2

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