MIG Welding Wire, 309LSI Stainless Steel, 0.035", 25 lb. Spool

For welding heat resistant 22-25% chromium – 12-13% nickel stainless steels such as 309/309L to itself, to other austenitic Cr – Ni grades such as 304L, 308L, 310, 316L, 321 or 347 as well as martensitic grades such as 410, 420, 431, and ferritic stainless grades such as 430, 442, and 446; all of these stainless steel grades can be welded to each other or to mild and carbon steels. Greater silicon level than 309L increases fluidity of the weld puddle allowing for higher welding speeds, ensuring a better tie-in and smoother bead appearance. Low carbon content preserves the intergranular corrosion resistant properties of the weld deposit and weld zone. Common applications of 309LSI include welding of dissimilar steels or overlaying unalloyed structural steels found in furnace parts, kiln linings, heat treatment containers, forgings, and castings in chemical, petrochemical, power generation and pharmaceutical industries.