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X 45 CrNiW 18 9

Germany DIN X45CrNiW189 Valve materials; technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X45CrNiW189 / X 45 CrNiW 18 9
Category Grade Standard Region/Area Standard Content
Metals X 45 CrNiW 18 9 DIN 17480 Germany Valve materials; technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the X 45 CrNiW 18 9

Element Min Max Similar
W 0.8000 1.2000 -
Si 2.0000 3.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 8.0000 10.0000 -
Mn 0.8000 1.5000 -
Cr 17.0000 19.0000 -
C 0.4000 0.5000 -

Mechanical Properties of steel grade X 45 CrNiW 18 9

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)
424 (≥) 333 (≥) 12 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 344

Physical Properties of steel grade X 45 CrNiW 18 9

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
41 - -     0.23 -  
695 258 - 12.3 234   -  
155 - 42 31.2   432 443

Heat Treatment of steel grade X 45 CrNiW 18 9

Heat treated : 1285°C - 1783°C

Technological Curves of steel grade X 45 CrNiW 18 9

Cross Reference Table (Equivalent Grade) of X 45 CrNiW 18 9

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