Blue Demon ER309/309L is very similar to type 309 except for the carbon content being lower than .03%.
- The extra low carbon provides good resistance to carbide precipitation and corrosion
- ER309L works well for dissimilar joints that undergo heat treatment
- AWS A5.9, Welding current DCEP
- Positions: full, vertical, overhead, horizontal
- Size: 0.045
- Dimensions: 4 x 4 x 2 inches