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FGS 420-7

France AFNOR NF FGS420-7 Foundry products. Spheroidal graphite cast iron for fittings and pressure vessels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: FGS420-7 / FGS 420-7
Category Grade Standard Region/Area Standard Content
Metals FGS 420-7 NF A32-211 France Foundry products. Spheroidal graphite cast iron for fittings and pressure vessels

Chemical composition(mass fraction)(wt.%) of the FGS 420-7

Element Min Max Similar

Mechanical Properties of steel grade FGS 420-7

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)
562 (≥) 951 (≥) 22 22 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade FGS 420-7

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
14 - -     0.41 -  
792 294 - 41.3 241   -  
782 - 33 31.2   342 443

Heat Treatment of steel grade FGS 420-7

Heat treated : 1856°C - 1477°C

Technological Curves of steel grade FGS 420-7

Cross Reference Table (Equivalent Grade) of FGS 420-7

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