S119951-089 - Hobart 418 E7018-1 Stick Electrode 5/32" (4.0mm) 10lb Pack

Technical Performance: Hobart 418 E7018-1 H4R

The Hobart 418 is a high-specification Shielded Metal Arc Welding (SMAW) electrode designed to meet the rigorous demands of heavy industrial fabrication. Carrying the AWS classification of E7018 H4R and E7018-1 H4R, this electrode is formulated for single and multiple pass welding on mild steel and low alloy structural steels. The "H4R" designation indicates its resistance to moisture pickup, a critical factor in preventing hydrogen-induced cracking in the heat-affected zone of the base metal.

Engineered for superior operability, the Hobart 418 provides excellent arc characteristics on both DCEP and AC currents. This dual-polarity capability allows welders to adapt to different power source availability and arc blow conditions. The electrode features a 5/32-inch (4.0mm) diameter and is suitable for all welding positions, including difficult vertical-up and overhead welds. This makes it particularly valuable for field applications in construction, shipbuilding, and pipeline repair where out-of-position welding is frequently required.

The mechanical properties and deposit composition of the Hobart 418 make it suitable for a wide array of critical applications. It is widely used in the fabrication of boiler and pressure vessels, power generation plants, and petrochemical facilities. It is also the electrode of choice for heavy equipment fabrication and repair, railcar construction, and infrastructure rebuilding that must adhere to State and Federal Transportation Codes. The electrode is designed to weld effectively on low alloy structural steels, alloy castings, and high carbon castings, providing a sound, ductile weld deposit.

Operators will appreciate the practical benefits of the Hobart 418's coating formulation. It delivers a quiet arc with low spatter, ensuring high deposition efficiency and operator comfort. The slag system is engineered for easy detachment, reducing the risk of slag inclusions in multi-pass welds. Supplied in a 10 lb (4.5 kg) plastic pak, the electrodes are safeguarded against environmental exposure, ensuring they meet the low hydrogen requirements right out of the box.