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45 MF 6.3

France AFNOR NF 45MF6.3 Iron and steel. Heat treated free-cutting special steel. Bars and wire rods drawing. Types and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 45MF6.3 / 45 MF 6.3
Category Grade Standard Region/Area Standard Content
Metals 45 MF 6.3 NF A35-562 France Iron and steel. Heat treated free-cutting special steel. Bars and wire rods drawing. Types

Chemical composition(mass fraction)(wt.%) of the 45 MF 6.3

Element Min Max Similar
Si 0.1000 0.4000 -
S 0.2400 0.3200 -
P - 0.0400 -
Mn 1.3000 1.7000 -
C 0.4100 0.4800 -
Si 0.1000 0.4000 -
S 0.2400 0.3200 -
P - 0.0400 -
Mn 1.3000 1.7000 -
C 0.4100 0.4800 -

Mechanical Properties of steel grade 45 MF 6.3

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)
694 (≥) 224 (≥) 33 43 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 224

Physical Properties of steel grade 45 MF 6.3

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
41 - -     0.42 -  
833 674 - 41.3 121   -  
468 - 14 12.2   214 133

Heat Treatment of steel grade 45 MF 6.3

Heat treated : 1826°C - 1231°C

Technological Curves of steel grade 45 MF 6.3

Cross Reference Table (Equivalent Grade) of 45 MF 6.3

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