S422044-035 - Hobart 7018 XLM Stick Electrodes 1/8 Inch 50lb Can

Technical Overview of Hobart 7018 XLM Electrodes

The Hobart 7018 XLM (Extra Low Moisture) is a premium quality, low-hydrogen iron powder electrode designed to meet the rigorous demands of heavy industrial welding. Classified under AWS A5.1 as E7018-1 H4R, this consumable is engineered for high-integrity structural applications where resistance to hydrogen-induced cracking is paramount. The 'H4R' designation certifies that the electrode meets strict moisture resistance requirements, maintaining low diffusible hydrogen levels even after exposure to humid environments, provided proper handling procedures are followed. This makes it an ideal choice for critical code work in industries such as offshore construction, shipbuilding, and petrochemical fabrication.

Mechanically, the E7018-1 classification indicates improved impact toughness at lower temperatures compared to standard E7018 electrodes, ensuring reliable performance in harsh operating conditions. The addition of iron powder to the coating significantly enhances the deposition rate, allowing for faster travel speeds and increased productivity during single and multiple pass operations. The electrode is formulated to operate on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC), providing flexibility across various power sources and site conditions.

Packaged in a 50 lb (22.7 kg) hermetically sealed can, the Hobart 7018 XLM is protected from atmospheric moisture ingress during storage and transport. This packaging solution is essential for maintaining the factory-fresh condition of low-hydrogen consumables. The electrode is suitable for welding mild steel and low alloy structural steels, offering consistent chemical and mechanical properties that align with stringent engineering specifications for field erections, heavy equipment repair, and power plant construction.