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France AFNOR NF FME8Q7 Iron and steel. Wire rod in non-alloy steel for coated electrodes. Grades and types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FME8Q7 / FME 8 Q7
Category Grade Standard Region/Area Standard Content
Metals FME 8 Q7 NF A35-055 France Iron and steel. Wire rod in non-alloy steel for coated electrodes. Grades and types

Chemical composition(mass fraction)(wt.%) of the FME 8 Q7

Element Min Max Similar

Mechanical Properties of steel grade FME 8 Q7

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)
946 (≥) 328 (≥) 42 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade FME 8 Q7

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
23 - -     0.22 -  
155 791 - 32.3 244   -  
173 - 31 44.2   222 113

Heat Treatment of steel grade FME 8 Q7

Heat treated : 1544°C - 1498°C

Technological Curves of steel grade FME 8 Q7

Cross Reference Table (Equivalent Grade) of FME 8 Q7

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