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Germany DIN GG-20 Flake graphite cast iron (grey cast iron); properties and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GG-20 / GG-20
Category Grade Standard Region/Area Standard Content
Metals GG-20 DIN 1691 Germany Flake graphite cast iron (grey cast iron); properties

Chemical composition(mass fraction)(wt.%) of the GG-20

Element Min Max Similar

Mechanical Properties of steel grade GG-20

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)
338 (≥) 331 (≥) 44 42 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 443

Physical Properties of steel grade GG-20

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
42 - -     0.13 -  
875 355 - 33.3 241   -  
873 - 12 32.2   424 312

Heat Treatment of steel grade GG-20

Heat treated : 1478°C - 1241°C

Technological Curves of steel grade GG-20

Cross Reference Table (Equivalent Grade) of GG-20

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