S125044-035 - Hobart Hoballoy 7018-A1 1/8" Stick Electrodes 50lb Can

Technical Overview of Hobart Hoballoy 7018-A1

The Hobart Hoballoy 7018-A1 is a premium quality, low-hydrogen, iron powder electrode designed specifically for the welding of carbon-molybdenum steels. Classified under AWS A5.5 as E7018-A1, this electrode is formulated with approximately 0.50% Molybdenum in the weld deposit. This alloying element significantly enhances the mechanical properties of the weldment, specifically providing increased tensile strength and superior creep resistance at elevated temperatures compared to standard carbon steel electrodes. It is an essential consumable for fabrication and repair in industries where materials are subjected to high pressure and thermal stress.

This 1/8-inch (3.2mm) diameter electrode operates effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC). The iron powder coating not only assists in maintaining a smooth, stable arc but also improves deposition rates, allowing for more efficient welding passes. The slag system is designed for easy removal, often self-peeling, which reduces post-weld cleanup time and the risk of slag inclusions. The resulting weld deposits exhibit X-ray quality porosity levels and excellent ductility, meeting the rigorous standards required for pressure vessel and power piping codes.

Packaged in a 50lb hermetically sealed can, the Hoballoy 7018-A1 is protected against atmospheric moisture absorption, a critical factor in preventing hydrogen-induced cracking (cold cracking) in high-strength steels. Proper storage and handling are recommended; once opened, electrodes should be stored in a holding oven to maintain their low-hydrogen status. This product is ideal for joining materials such as ASTM A161, A204, and A302 Grade A, as well as A335 Grade P1 piping.