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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)
578 (≥) 282 (≥) 32 34 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

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
22 - -     0.13 -  
739 836 - 21.3 133   -  
132 - 43 34.2   341 431

Heat Treatment of steel grade 8 CrSi 7-7

Heat treated : 1563°C - 1984°C

Technological Curves of steel grade 8 CrSi 7-7

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

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