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Italy UNI G25 Classification of grey cast iron and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: G25 / G 25
Category Grade Standard Region/Area Standard Content
Metals G 25 UNI 5007 Italy Classification of grey cast iron

Chemical composition(mass fraction)(wt.%) of the G 25

Element Min Max Similar

Mechanical Properties of steel grade G 25

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)
158 (≥) 718 (≥) 43 43 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical Properties of steel grade G 25

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 - -     0.23 -  
519 153 - 13.3 114   -  
914 - 32 44.2   424 131

Heat Treatment of steel grade G 25

Heat treated : 1441°C - 1933°C

Technological Curves of steel grade G 25

Cross Reference Table (Equivalent Grade) of G 25

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