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Germany DIN 1.6779 High strength steel castings with good weldability. Technical delivery conditions and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 1.6779 / 1.6779
Category Grade Standard Region/Area Standard Content
Metals 1.6779 SEW 520 Germany High strength steel castings with good weldability. Technical delivery conditions

Chemical composition(mass fraction)(wt.%) of the 1.6779

Element Min Max Similar
Si - 0.3000 -
S - 0.0100 -
P - 0.0100 -
Ni 2.7000 3.0000 -
Mo 0.4500 0.5500 -
Mn 0.5500 0.7000 -
Cr 1.3000 1.8000 -
C 0.1200 0.1600 -

Mechanical Properties of steel grade 1.6779

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)
126 (≥) 953 (≥) 23 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 321

Physical Properties of steel grade 1.6779

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
33 - -     0.31 -  
825 627 - 24.3 123   -  
489 - 21 31.2   333 144

Heat Treatment of steel grade 1.6779

Heat treated : 1827°C - 1448°C

Technological Curves of steel grade 1.6779

Cross Reference Table (Equivalent Grade) of 1.6779

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