Weldcote Metals 308 Stainless Steel Welding Wire Diameter: .030" Spool Size: 10 LB 8" Diameter Weldcote Metals 308 is used for MIG arc welding of unstabilized stainless steels such as Types 301, 302, 304, 305, 308. This filler metal is the most popular grade among stainless steels, used for general purpose applications where corrosion conditions are moderate. Can also be certified as ER308H APPROVALS: Manufactured under Quality System approved by ASME, IS09001. Meets AWS 5.9 Class ER308. Approved by Canadian Welding Bureau.