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Australia AS E7Cr Electrodes and fluxes for submerged-arc welding - Low and intermediate alloy steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: E7Cr / E7Cr
Category Grade Standard Region/Area Standard Content
Metals E7Cr AS/NZS 1858.2 Australia Electrodes and fluxes for submerged-arc welding - Low and intermediate alloy steels

Chemical composition(mass fraction)(wt.%) of the E7Cr

Element Min Max Similar
Si 0.2000 0.5000 -
S - 0.0250 -
P - 0.0250 -
Mo 0.4500 0.6500 -
Mn - 1.2000 -
Cu - 0.3500 -
Cr 6.0000 8.0000 -
C - 0.1000 -

Mechanical Properties of steel grade E7Cr

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)
786 (≥) 181 (≥) 22 21 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade E7Cr

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
32 - -     0.24 -  
552 629 - 21.3 434   -  
812 - 44 41.2   314 213

Heat Treatment of steel grade E7Cr

Heat treated : 1423°C - 1462°C

Technological Curves of steel grade E7Cr

Cross Reference Table (Equivalent Grade) of E7Cr

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