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55 SiCr 7

Germany DIN 55SiCr7 Heat treatable alloyed SiCrMn steel and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 55SiCr7 / 55 SiCr 7
Category Grade Standard Region/Area Standard Content
Metals 55 SiCr 7 -- Germany Heat treatable alloyed SiCrMn steel

Chemical composition(mass fraction)(wt.%) of the 55 SiCr 7

Element Min Max Similar
Si 1.5000 1.8000 -
S - 0.0500 -
P - 0.0500 -
N - 0.0070 -
Mn 0.7000 1.0000 -
Cr 0.2000 0.4000 -
C 0.5200 0.6000 -

Mechanical Properties of steel grade 55 SiCr 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)
381 (≥) 129 (≥) 32 21 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 121

Physical Properties of steel grade 55 SiCr 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
43 - -     0.14 -  
531 272 - 11.3 424   -  
671 - 32 33.2   344 414

Heat Treatment of steel grade 55 SiCr 7

Heat treated : 1578°C - 1462°C

Technological Curves of steel grade 55 SiCr 7

Cross Reference Table (Equivalent Grade) of 55 SiCr 7

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