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45 SiCr 90

Romania STAS 45SiCr90 Valve steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 45SiCr90 / 45 SiCr 90
Category Grade Standard Region/Area Standard Content
Metals 45 SiCr 90 STAS 11311 Romania Valve steels

Chemical composition(mass fraction)(wt.%) of the 45 SiCr 90

Element Min Max Similar
Si 2.7000 3.3000 -
S - 0.0300 -
P - 0.0400 -
Mn - 0.8000 -
Cr 8.0000 10.0000 -
C 0.4000 0.5000 -

Mechanical Properties of steel grade 45 SiCr 90

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)
777 (≥) 378 (≥) 13 22 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 214

Physical Properties of steel grade 45 SiCr 90

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
11 - -     0.33 -  
549 133 - 32.3 441   -  
756 - 21 34.2   133 424

Heat Treatment of steel grade 45 SiCr 90

Heat treated : 1875°C - 1865°C

Technological Curves of steel grade 45 SiCr 90

Cross Reference Table (Equivalent Grade) of 45 SiCr 90

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