S422058-033 - Hobart 7018 XLM 3/16" Low Hydrogen Stick Electrodes - 10lb Can

Technical Overview of Hobart 7018 XLM Electrodes

The Hobart 7018 XLM (Extra Low Moisture) is a premium quality carbon steel electrode designed for Shielded Metal Arc Welding (SMAW). Engineered to meet the rigorous demands of critical structural applications, this electrode features a specially formulated coating that resists moisture pick-up under high-humidity conditions. This characteristic is vital for maintaining low diffusible hydrogen levels in the weld deposit, thereby significantly reducing the risk of hydrogen-induced cracking (cold cracking) in thick-section steels and restrained joints. The 'XLM' designation underscores its superior resistance to atmospheric moisture compared to standard E7018 electrodes.

This 3/16-inch diameter electrode utilizes an iron powder coating which enhances the deposition rate, allowing for faster travel speeds and increased productivity in heavy fabrication environments. It is classified under AWS A5.1 as E7018, indicating a minimum tensile strength of 70,000 psi. The electrode is versatile in its power requirements, operating efficiently on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC). This dual-compatibility makes it a flexible choice for shops with varied power sources. The mechanical properties of the weld metal produced are excellent, offering high ductility and impact toughness, which are essential for industries such as offshore drilling, shipbuilding, and pressure vessel fabrication.

Storage and handling are critical for low-hydrogen electrodes. While the XLM coating provides a buffer against moisture absorption, adherence to proper storage protocols—such as holding ovens—is recommended to guarantee the highest weld integrity. The 10lb hermetically sealed can ensures the product arrives factory-fresh and ready for immediate use in critical applications. This electrode is particularly well-suited for welding low alloy structural steels where weld metal integrity cannot be compromised.