Image not found

Diameters / Packaging


2 lb Spool
2 lb. spool
10 lb Spool
10 lb. spool
25 lb. spool
.030 in. 309L 0309LE2
.030" POP 0309LE2POP 0309LE5POP
.035 in. 309L 0309LF2 0309LF5
.045 in. 309L 0309LH8
0.030 in. 0309LE5
0.035 in. 0309LF8,0309LF2POP



ER309L Stainless Steel GMAW (MIG) welding alloy


ER309L Stainless steel GMAW (MIG) welding wire is used to weld base metals of similar composition in wrought or cast form. It is also used to weld type 304 and similar base metals where severe conditions may exist. Occasionally, used to weld dissimilar steels. The lower carbon content of .03% max. helps to avoid the possibility of intergranular carbide precipitation.


  • Stainless steel 309L welding wire welds 304 and similar base metals in wrought or cast form where severe corrosion conditions may exist
  • Sometimes welds dissimilar steels
  • 86,000 psi tensile strength (as welded)
  • 57,000 psi yield strength (as welded)
  • 47% elongation; 68% reduction of area (as welded)
  • 85 HRB Rockwell B hardness (as welded)
  • 160 HB Brinell hardness (as welded)
  • 105 ft./lb. @ room temperature Charpy V (as welded)
  • Conforms to ANSI/AWS A5.9 & ASME SFA 5.9 ER 309L

Typical Applications

  • General fabrication
  • Joining dissimilar metals

Welding Positions

  • All

Shielding Gas

  • 98% Ar/ 2% O2


Warning -

Cancer and Reproductive Harm -