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America AWS EC309Si 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: EC309Si / EC309Si
Category Grade Standard Region/Area Standard Content
Metals EC309Si 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 EC309Si

Element Min Max Similar
Cu - 0.7500 -
S - 0.0300 -
P - 0.0300 -
Si 0.6500 1.0000 -
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 EC309Si

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)
117 (≥) 411 (≥) 12 11 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 312

Physical Properties of steel grade EC309Si

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
13 - -     0.12 -  
135 427 - 31.3 332   -  
316 - 14 34.2   224 344

Heat Treatment of steel grade EC309Si

Heat treated : 1335°C - 1359°C

Technological Curves of steel grade EC309Si

Cross Reference Table (Equivalent Grade) of EC309Si

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