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America ASME E70T-4 弧焊用碳钢药芯焊丝标准 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: E70T-4 / E70T-4
Category Grade Standard Region/Area Standard Content
Metals E70T-4 ASME SFA-5.20/SFA-5.20M America 弧焊用碳钢药芯焊丝标准

Chemical composition(mass fraction)(wt.%) of the E70T-4

Element Min Max Similar

Mechanical Properties of steel grade E70T-4

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)
558 (≥) 322 (≥) 21 42 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade E70T-4

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 - -     0.24 -  
517 818 - 44.3 324   -  
344 - 44 41.2   312 114

Heat Treatment of steel grade E70T-4

Heat treated : 1313°C - 1648°C

Technological Curves of steel grade E70T-4

Cross Reference Table (Equivalent Grade) of E70T-4

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