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GX40NiCrSiNb38-18

Germany DIN GX40NiCrSiNb38-18 Heat resisting steel castings; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals GX40NiCrSiNb38-18 DIN 17465 Germany Heat resisting steel castings; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the GX40NiCrSiNb38-18

Element Min Max Similar
Si 1.0000 2.5000 -
S - 0.0300 -
P - 0.0350 -
Ni 36.0000 39.0000 -
Nb 1.2000 1.8000 -
Mn - 1.5000 -
Cr 17.0000 19.0000 -
C 0.3000 0.5000 -

Mechanical Properties of steel grade GX40NiCrSiNb38-18

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)
855 (≥) 924 (≥) 23 42 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 233

Physical Properties of steel grade GX40NiCrSiNb38-18

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
23 - -     0.43 -  
717 887 - 32.3 134   -  
796 - 22 22.2   243 231

Heat Treatment of steel grade GX40NiCrSiNb38-18

Heat treated : 1653°C - 1779°C

Technological Curves of steel grade GX40NiCrSiNb38-18

Cross Reference Table (Equivalent Grade) of GX40NiCrSiNb38-18

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