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PINNACLE 70S-6 .045 33 lb Spool -- PREMIER S-6 is a premium carbon steel, “MIG wire”, electrode formulated for welding carbon steels with a yield strength range of 55,000-70,000 psi. PREMIER S-6 is well suited for steels containing medium to high levels of mill scale and mild amounts of contaminants. The wire’s copper coating promotes excellent feeding characteristics. PREMIER S-6 is a good selection for weldments requiring better tie-in and wetting than possible with a 70S-3 electrode. It is a terrific choice for welding pressure vessels, structural steel, pipe, steel buildings, and automotive repair.