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France AFNOR NF A70-2 Hot-rolled products of non alloy structural steels. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A70-2 / A 70-2
Category Grade Standard Region/Area Standard Content
Metals A 70-2 NF A35-501 France Hot-rolled products of non alloy structural steels. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the A 70-2

Element Min Max Similar
S - 0.0450 -
P - 0.0450 -
N - 0.0090 -

Mechanical Properties of steel grade A 70-2

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)
963 (≥) 267 (≥) 32 21 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade A 70-2

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
33 - -     0.34 -  
198 969 - 44.3 342   -  
388 - 44 23.2   412 411

Heat Treatment of steel grade A 70-2

Heat treated : 1263°C - 1862°C

Technological Curves of steel grade A 70-2

Cross Reference Table (Equivalent Grade) of A 70-2

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