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X 45 CrSi 9-3

Germany DIN X45CrSi9-3 Valve steels and alloys for internal combustion engines and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: X45CrSi9-3 / X 45 CrSi 9-3
Category Grade Standard Region/Area Standard Content
Metals X 45 CrSi 9-3 DIN EN 10090 Germany Valve steels and alloys for internal combustion engines

Chemical composition(mass fraction)(wt.%) of the X 45 CrSi 9-3

Element Min Max Similar
Si 2.7000 3.3000 -
S - 0.0300 -
P - 0.0400 -
Ni - 0.6000 -
Mn - 0.8000 -
Cr 8.0000 10.0000 -
C 0.4000 0.5000 -
Si 2.6000 3.4000 -
S - 0.0350 -
P - 0.0450 -
Mn - 0.8500 -
Cr 7.9000 10.1000 -
C 0.3800 0.5200 -
Si 2.7000 3.3000 -
S - 0.0300 -
P - 0.0400 -
Ni - 0.5000 -
Mn - 0.6000 -
Cr 8.0000 10.0000 -
C 0.4000 0.5000 -

Mechanical Properties of steel grade X 45 CrSi 9-3

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)
677 (≥) 625 (≥) 13 44 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade X 45 CrSi 9-3

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
34 - -     0.13 -  
154 942 - 43.3 432   -  
668 - 12 43.2   324 211

Heat Treatment of steel grade X 45 CrSi 9-3

Heat treated : 1697°C - 1999°C

Technological Curves of steel grade X 45 CrSi 9-3

Cross Reference Table (Equivalent Grade) of X 45 CrSi 9-3

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