S119944-033 - Hobart 418 E7018-1 Stick Electrode 1/8" 10lb Can

Technical Overview of Hobart 418 E7018-1 Electrodes

The Hobart 418 is a premium quality, low hydrogen stick electrode designed for Shielded Metal Arc Welding (SMAW) of mild and low alloy steels. This specific product, identified by SKU S119944-033, features a 1/8-inch (3.2 mm) diameter and is packaged in a 10 lb (4.5 kg) hermetically sealed can to preserve its low moisture characteristics. It carries the AWS classification of E7018 H4R and E7018-1 H4R. The 'H4R' designation indicates that the electrode is moisture-resistant and meets the requirement of less than 4ml of diffusible hydrogen per 100g of deposited weld metal, reducing the risk of hydrogen-induced cracking in the heat-affected zone.

The dual classification (E7018-1) signifies that this electrode meets improved impact toughness requirements at lower temperatures compared to standard E7018 electrodes, making it suitable for applications where ductility at sub-zero temperatures is critical. The Hobart 418 operates effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC), providing versatility across different power sources. Its iron powder coating facilitates a higher deposition rate compared to non-iron powder electrodes, while maintaining a smooth arc and manageable puddle.

Designed for all-position welding—including flat, horizontal, vertical-up, and overhead—the Hobart 418 is engineered for single and multiple pass applications. It is particularly well-suited for welding steels used in power generation, petrochemical plants, pressure vessels, and heavy structural fabrication. The electrode's formulation ensures excellent X-ray quality welds, essential for code-compliant work in infrastructure and mining equipment repair. The hermetically sealed packaging ensures that the electrodes remain factory-fresh until opened; however, standard low-hydrogen storage practices (holding ovens) should be observed after opening to maintain the H4R status.