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America AWS EFe7 手工电弧焊用堆焊焊条标准 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EFe7 / EFe7
Category Grade Standard Region/Area Standard Content
Metals EFe7 AWS A5.13 America 手工电弧焊用堆焊焊条标准

Chemical composition(mass fraction)(wt.%) of the EFe7

Element Min Max Similar
Total others - 1.0000 -
Si - 1.5000 -
S - 0.0350 -
P - 0.0350 -
Mo - 1.0000 -
Mn 0.5000 2.0000 -
Cr 4.0000 8.0000 -
C 1.5000 3.0000 -

Mechanical Properties of steel grade EFe7

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)
854 (≥) 352 (≥) 13 31 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade EFe7

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
34 - -     0.41 -  
931 477 - 24.3 343   -  
925 - 33 33.2   143 134

Heat Treatment of steel grade EFe7

Heat treated : 1824°C - 1437°C

Technological Curves of steel grade EFe7

Cross Reference Table (Equivalent Grade) of EFe7

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