ER309 is used for welding of other 309 type stainless steels.  It can also be used to weld dissimilar metals such as carbon or low alloy steel to stainless steel.

AWS Specification           
AWS A5.9

AWS Classification            
ER309

Welding Current
DCEP (Electrode Positive)

Typical Wire Chemistry
C         0.05
Si        0.52
Mn       1.95
Ni        13.10
Cr        23.75  

Typical Mechanical Properties (As Welded)
Tensile Strength, psi            86,500
% Elongation in 2"                34

Welding Positions
All positions

Shielding Gas
Ar or Ar CO₂ mix

Available Diameters
.023", .030", .035", & .045" - GMAW
.035", .045", 1/16", 3/32", & 1/8" - GTAW

Operating Range In Amps
.023"   35 - 70
.030"   50 - 100
.035"   100 - 150
.045"   150 - 200

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