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GX40CrNiSi25-20

Germany SEW GX40CrNiSi25-20 Cast steel for crude oil and natural gas installations and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: GX40CrNiSi25-20 / GX40CrNiSi25-20
Category Grade Standard Region/Area Standard Content
Metals GX40CrNiSi25-20 SEW 595 Germany Cast steel for crude oil and natural gas installations

Chemical composition(mass fraction)(wt.%) of the GX40CrNiSi25-20

Element Min Max Similar
Si 1.0000 2.5000 -
S - 0.0300 -
P - 0.0450 -
Ni 19.0000 21.0000 -
Mn 0.5000 1.5000 -
Cr 24.0000 26.0000 -
C 0.3000 0.5000 -

Mechanical Properties of steel grade GX40CrNiSi25-20

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)
976 (≥) 425 (≥) 43 32 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade GX40CrNiSi25-20

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
32 - -     0.11 -  
897 969 - 24.3 224   -  
648 - 43 12.2   442 134

Heat Treatment of steel grade GX40CrNiSi25-20

Heat treated : 1458°C - 1551°C

Technological Curves of steel grade GX40CrNiSi25-20

Cross Reference Table (Equivalent Grade) of GX40CrNiSi25-20

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