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America AWS EC309 Specification for stainless steel flux cored and metal cored welding electrodes and rods 4th edition and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: EC309 / EC309
Category Grade Standard Region/Area Standard Content
Metals EC309 AWS A5.22/A5.22M America Specification for stainless steel flux cored and metal cored welding electrodes and rods 4th edition

Chemical composition(mass fraction)(wt.%) of the EC309

Element Min Max Similar
Cu - 0.7500 -
S - 0.0300 -
P - 0.0300 -
Si 0.3000 0.6500 -
Mn 1.0000 2.5000 -
Mo - 0.7500 -
Ni 12.0000 14.0000 -
Cr 23.0000 25.0000 -
C - 0.1200 -

Mechanical Properties of steel grade EC309

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)
686 (≥) 223 (≥) 11 34 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical Properties of steel grade EC309

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 - -     0.31 -  
529 516 - 43.3 434   -  
147 - 23 14.2   432 141

Heat Treatment of steel grade EC309

Heat treated : 1763°C - 1945°C

Technological Curves of steel grade EC309

Cross Reference Table (Equivalent Grade) of EC309

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