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France AFNOR NF FR28 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: FR28 / FR 28
Category Grade Standard Region/Area Standard Content
Metals FR 28 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 28

Element Min Max Similar
Si - 0.3500 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.2500 -
Mn 0.5000 0.8000 -
Cu - 0.2000 -
Cr+Ni+Cu - 0.4500 -
Cr - 0.1500 -
C 0.2500 0.3000 -
Al - 0.0200 -

Mechanical Properties of steel grade FR 28

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)
926 (≥) 494 (≥) 22 13 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 323

Physical Properties of steel grade FR 28

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
44 - -     0.41 -  
339 653 - 42.3 114   -  
463 - 14 43.2   122 344

Heat Treatment of steel grade FR 28

Heat treated : 1764°C - 1221°C

Technological Curves of steel grade FR 28

Cross Reference Table (Equivalent Grade) of FR 28

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