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France AFNOR NF 20F2 Non standardized steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 20F2 / 20 F 2
Category Grade Standard Region/Area Standard Content
Metals 20 F 2 -- France Non standardized steels

Chemical composition(mass fraction)(wt.%) of the 20 F 2

Element Min Max Similar

Mechanical Properties of steel grade 20 F 2

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)
825 (≥) 464 (≥) 33 24 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade 20 F 2

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
13 - -     0.24 -  
995 498 - 12.3 211   -  
598 - 12 24.2   431 222

Heat Treatment of steel grade 20 F 2

Heat treated : 1514°C - 1692°C

Technological Curves of steel grade 20 F 2

Cross Reference Table (Equivalent Grade) of 20 F 2

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