The Hobart Sterling AP 316\/316L is a premium shielded metal arc welding (SMAW) electrode designed for joining Type 316 and 316L stainless steels. This electrode is formulated with a rutile-based coating (AWS E316L-17 classification), which provides excellent arc stability and weldability in all positions, including vertical-up and overhead. The ‘L’ designation indicates a maximum carbon content of 0.04%, a critical feature that minimizes the risk of carbide precipitation at the grain boundaries during the welding thermal cycle. This reduction in sensitization significantly enhances the weldment’s resistance to intergranular corrosion, making it suitable for service in severe corrosive environments.<\/p>\n
Metallurgically, the deposit contains molybdenum (typically 2.0% to 3.0%), which increases creep resistance at elevated temperatures and provides superior resistance to pitting corrosion caused by chlorides and other reducing acids. The electrode produces a weld deposit with a ferrite number (FN) controlled to prevent hot cracking (fissuring) while maintaining corrosion resistance. The 3\/16-inch diameter is optimized for heavier section thicknesses where higher deposition rates are required, operating efficiently on both Alternating Current (AC) and Direct Current Electrode Positive (DCEP).<\/p>\n