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X 4 CrNiMoNb 25-7

Germany DIN X4CrNiMoNb25-7 High alloyed CrNiMoTi steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X4CrNiMoNb25-7 / X 4 CrNiMoNb 25-7
Category Grade Standard Region/Area Standard Content
Metals X 4 CrNiMoNb 25-7 -- Germany High alloyed CrNiMoTi steel

Chemical composition(mass fraction)(wt.%) of the X 4 CrNiMoNb 25-7

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 6.5000 7.5000 -
Nb - - -
Mo 1.3000 2.0000 -
Mn - 2.0000 -
Cr 24.0000 26.0000 -
C - 0.0600 -

Mechanical Properties of steel grade X 4 CrNiMoNb 25-7

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)
684 (≥) 974 (≥) 31 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade X 4 CrNiMoNb 25-7

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
44 - -     0.43 -  
992 449 - 22.3 342   -  
714 - 22 32.2   411 342

Heat Treatment of steel grade X 4 CrNiMoNb 25-7

Heat treated : 1474°C - 1767°C

Technological Curves of steel grade X 4 CrNiMoNb 25-7

Cross Reference Table (Equivalent Grade) of X 4 CrNiMoNb 25-7

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