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X20CrNiSi25-4

Germany SEW X20CrNiSi25-4 Heat resisting rolled and forged steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X20CrNiSi25-4 / X20CrNiSi25-4
Category Grade Standard Region/Area Standard Content
Metals X20CrNiSi25-4 SEW 470 Germany Heat resisting rolled and forged steels

Chemical composition(mass fraction)(wt.%) of the X20CrNiSi25-4

Element Min Max Similar
Si 0.8000 1.5000 -
S - 0.0300 -
P - 0.0400 -
Ni 3.5000 5.5000 -
Mn - 2.0000 -
Cr 24.0000 27.0000 -
C 0.1000 0.2000 -

Mechanical Properties of steel grade X20CrNiSi25-4

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)
477 (≥) 757 (≥) 13 24 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 234

Physical Properties of steel grade X20CrNiSi25-4

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
22 - -     0.44 -  
795 656 - 13.3 433   -  
297 - 14 12.2   143 114

Heat Treatment of steel grade X20CrNiSi25-4

Heat treated : 1894°C - 1393°C

Technological Curves of steel grade X20CrNiSi25-4

Cross Reference Table (Equivalent Grade) of X20CrNiSi25-4

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