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Description

Romania STAS/SR 45SiCr90 tool steel and 45SiCr90 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Valve Steel: 45SiCr90
Category Type Steel Grade Standard Country Application
Steel GradesValve Steel 45SiCr90 STAS/SR Romania tool steel
1.4882
X53CrMnNiNbN21-9
1.4870
X85CrMoV18-2
1.4748
NiCr20TiAI
2.4952
NiFe25Cr20NbTi
2.4955
Fe-Ni36

Chemical composition(mass fraction)(wt.%) of the 45SiCr90

C(%) Si(%) Mn(%) P(%) S(%) Cr(%)
0.40-0.50 2.70-3.30 0.8 0.04 0.03 8.00-10.0

Mechanical Properties of steel grade 45SiCr90

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)
414 (≥) 634 (≥) 14 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 45SiCr90

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 - -     0.42 -  
832 962 - 42.3 222   -  
797 - 33 22.2   322 233

Heat Treatment of steel grade 45SiCr90

Heat treated : 1392°C - 1591°C

Technological Curves of steel grade 45SiCr90

Cross Reference Table (Equivalent Grade) of 45SiCr90

Grade Standard Country Application
45SiCr90 STAS/SR Romania tool steel

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