Commercial specifications for filler and base metal differ in the minimum alloy requirements, and consequently, the names 18-8, 19-9, and 20-10 are often associated with ER308. This alloy is used for welding base metals of similar composition such as 201, 202, 301, 302, 303, 304, 305, and 308. Information provided by Universal Wire Works for their line of welding wire and filler metal. |