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France AFNOR NF FR18 Iron and steel. Non-alloy steel wire rod for products made by hot or cold forming. Types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FR18 / FR 18
Category Grade Standard Region/Area Standard Content
Metals FR 18 NF A35-053 France Iron and steel. Non-alloy steel wire rod for products made by hot or cold forming. Types

Chemical composition(mass fraction)(wt.%) of the FR 18

Element Min Max Similar

Mechanical Properties of steel grade FR 18

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)
928 (≥) 399 (≥) 12 24 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 432

Physical Properties of steel grade FR 18

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
22 - -     0.23 -  
537 939 - 13.3 434   -  
373 - 14 31.2   232 332

Heat Treatment of steel grade FR 18

Heat treated : 1244°C - 1348°C

Technological Curves of steel grade FR 18

Cross Reference Table (Equivalent Grade) of FR 18

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