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France AFNOR NF 38C2u Quenched and tempered steels - Part 1: technical delivery conditions for specials steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 38C2u / 38 C 2 u
Category Grade Standard Region/Area Standard Content
Metals 38 C 2 u NF A35-552-1 France Quenched and tempered steels - Part 1: technical delivery conditions for specials steels

Chemical composition(mass fraction)(wt.%) of the 38 C 2 u

Element Min Max Similar
Si - 0.4000 -
S 0.0200 0.0400 -
P - 0.0350 -
Mn 0.5000 0.8000 -
Cr 0.4000 0.6000 -
C 0.3500 0.4200 -

Mechanical Properties of steel grade 38 C 2 u

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)
385 (≥) 866 (≥) 11 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade 38 C 2 u

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
41 - -     0.22 -  
597 136 - 43.3 312   -  
555 - 41 11.2   224 211

Heat Treatment of steel grade 38 C 2 u

Heat treated : 1918°C - 1858°C

Technological Curves of steel grade 38 C 2 u

Cross Reference Table (Equivalent Grade) of 38 C 2 u

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