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France AFNOR NF A70Et Iron and steel. General purpose steel. Bars and wire-rod for drawing. Grades and types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A70Et / A 70 Et
Category Grade Standard Region/Area Standard Content
Metals A 70 Et NF A35-049 France Iron and steel. General purpose steel. Bars and wire-rod for drawing. Grades and types

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

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

Mechanical Properties of steel grade A 70 Et

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)
814 (≥) 141 (≥) 33 23 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 133

Physical Properties of steel grade A 70 Et

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
43 - -     0.43 -  
494 328 - 33.3 133   -  
942 - 42 13.2   233 423

Heat Treatment of steel grade A 70 Et

Heat treated : 1527°C - 1313°C

Technological Curves of steel grade A 70 Et

Cross Reference Table (Equivalent Grade) of A 70 Et

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