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China 首钢Q/SG ER70S-3 焊丝用钢盘条 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ER70S-3 / ER70S-3
Category Grade Standard Region/Area Standard Content
Metals ER70S-3 Q/SGZGS 0294 China 焊丝用钢盘条

Chemical composition(mass fraction)(wt.%) of the ER70S-3

Element Min Max Similar
C 0.0600 0.1500 -
Si 0.4500 0.7500 -
Mn 0.9000 1.4000 -
P - 0.0250 -
S - 0.0250 -
Cr - 0.1000 -
Ni - 0.1000 -
Cu - 0.1000 -
Mo - 0.1000 -
V - 0.0300 -

Mechanical Properties of steel grade ER70S-3

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)
847 (≥) 649 (≥) 13 11 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 412

Physical Properties of steel grade ER70S-3

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
24 - -     0.21 -  
484 938 - 44.3 241   -  
475 - 31 24.2   421 423

Heat Treatment of steel grade ER70S-3

Heat treated : 1988°C - 1166°C

Technological Curves of steel grade ER70S-3

Cross Reference Table (Equivalent Grade) of ER70S-3

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