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France AFNOR NF FMP78 Iron and steel products. Non-alloy steel wire rod for prestressing reinforcement work. Types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FMP78 / FMP 78
Category Grade Standard Region/Area Standard Content
Metals FMP 78 NF A35-054 France Iron and steel products. Non-alloy steel wire rod for prestressing reinforcement work. Types

Chemical composition(mass fraction)(wt.%) of the FMP 78

Element Min Max Similar
Si 0.1000 0.3500 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.2500 -
Mo - 0.1000 -
Mn 0.6000 0.9000 -
Cu - 0.2000 -
Cr+Mo+Ni - 0.4000 -
Cr - 0.1500 -
C 0.7500 0.8000 -

Mechanical Properties of steel grade FMP 78

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)
313 (≥) 167 (≥) 11 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade FMP 78

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
34 - -     0.42 -  
579 471 - 31.3 242   -  
973 - 24 34.2   213 133

Heat Treatment of steel grade FMP 78

Heat treated : 1762°C - 1671°C

Technological Curves of steel grade FMP 78

Cross Reference Table (Equivalent Grade) of FMP 78

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