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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)
684 (≥) 828 (≥) 11 11 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

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
23 - -     0.44 -  
784 238 - 41.3 313   -  
545 - 12 31.2   142 111

Heat Treatment of steel grade 8 CrSi 7-7

Heat treated : 1581°C - 1559°C

Technological Curves of steel grade 8 CrSi 7-7

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

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