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France AFNOR NF 18MF6 Steel tubes. Seamless precision tubes for mechanical application. Dimensions. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 18MF6 / 18 MF6
Category Grade Standard Region/Area Standard Content
Metals 18 MF6 NF A49-310 France Steel tubes. Seamless precision tubes for mechanical application. Dimensions. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 18 MF6

Element Min Max Similar

Mechanical Properties of steel grade 18 MF6

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)
224 (≥) 949 (≥) 34 33 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 212

Physical Properties of steel grade 18 MF6

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 - -     0.24 -  
732 367 - 11.3 112   -  
559 - 11 23.2   331 313

Heat Treatment of steel grade 18 MF6

Heat treated : 1651°C - 1485°C

Technological Curves of steel grade 18 MF6

Cross Reference Table (Equivalent Grade) of 18 MF6

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