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France AFNOR NF 38CB1 Iron and steel. Heat treatable steels for externally threaded fasteners for structural purposes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 38CB1 / 38 CB 1
Category Grade Standard Region/Area Standard Content
Metals 38 CB 1 NF A35-556 France Iron and steel. Heat treatable steels for externally threaded fasteners for structural purposes

Chemical composition(mass fraction)(wt.%) of the 38 CB 1

Element Min Max Similar

Mechanical Properties of steel grade 38 CB 1

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)
648 (≥) 955 (≥) 42 24 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical Properties of steel grade 38 CB 1

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 - -     0.43 -  
379 748 - 22.3 141   -  
757 - 43 21.2   444 444

Heat Treatment of steel grade 38 CB 1

Heat treated : 1196°C - 1846°C

Technological Curves of steel grade 38 CB 1

Cross Reference Table (Equivalent Grade) of 38 CB 1

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