Weldcote 309Lsi Is Of The Same Chemical Composition As 309L, With Higher Silicon Content To Improve The Bead Appearance And Increase Welding Ease. The Weld Beads Are Exceptionally Smooth Due To Good Wetting. Weldcote 309Lsi Requires Little Clean Up Time With Low Spatter And Minimal Residue. 309Lsi Is Used For Joining 300 Series Stainless Steel To Carbon Or Low Alloy Steels.