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France AFNOR NF 75N8 Iron and steel. Continuously hot-rolled strip of non-alloy and alloy steels for cold re-rolling. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 75N8 / 75 N 8
Category Grade Standard Region/Area Standard Content
Metals 75 N 8 NF A36-102 France Iron and steel. Continuously hot-rolled strip of non-alloy and alloy steels for cold re-rolling. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 75 N 8

Element Min Max Similar
Si 0.1500 0.3000 -
S - 0.0200 -
P - 0.0250 -
Ni 1.9000 2.1000 -
Mo - 0.1000 -
Mn 0.3000 0.5000 -
Cr - 0.1500 -
C 0.7200 0.7800 -

Mechanical Properties of steel grade 75 N 8

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)
126 (≥) 852 (≥) 23 34 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade 75 N 8

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 - -     0.44 -  
169 686 - 24.3 432   -  
886 - 22 23.2   431 441

Heat Treatment of steel grade 75 N 8

Heat treated : 1357°C - 1167°C

Technological Curves of steel grade 75 N 8

Cross Reference Table (Equivalent Grade) of 75 N 8

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