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8 CrSi 7-7

Germany DIN 8CrSi7-7 Heat-resisting CrSi steel; Rolled and forged products and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 8CrSi7-7 / 8 CrSi 7-7
Category Grade Standard Region/Area Standard Content
Metals 8 CrSi 7-7 -- Germany Heat-resisting CrSi steel; Rolled and forged products

Chemical composition(mass fraction)(wt.%) of the 8 CrSi 7-7

Element Min Max Similar

Mechanical Properties of steel grade 8 CrSi 7-7

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)
575 (≥) 552 (≥) 31 32 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade 8 CrSi 7-7

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
42 - -     0.23 -  
887 259 - 44.3 412   -  
448 - 42 41.2   133 124

Heat Treatment of steel grade 8 CrSi 7-7

Heat treated : 1666°C - 1615°C

Technological Curves of steel grade 8 CrSi 7-7

Cross Reference Table (Equivalent Grade) of 8 CrSi 7-7

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