S125032-035 - Hobart Hoballoy 7018-A1 Low Alloy Stick Electrode 3/32" 50lb Can

Technical Overview: Hobart Hoballoy E7018-A1

The Hobart Hoballoy 7018-A1 (AWS E7018-A1) is a low-hydrogen, iron powder electrode designed for the Shielded Metal Arc Welding (SMAW) of carbon-molybdenum steels. This 3/32" diameter electrode is supplied in a hermetically sealed 50lb can to maintain its low-hydrogen status right off the shelf. It is the consumable of choice for fabricating and repairing components made from 0.50% Molybdenum base metals, commonly found in high-temperature, high-pressure applications such as boilers, pressure vessels, and piping systems.

Technically, the E7018-A1 classification indicates a tensile strength of at least 70,000 psi and a chemical composition that includes approximately 0.40-0.65% Molybdenum. This alloying element increases the creep resistance and high-temperature strength of the weld metal. The "18" suffix denotes a low-hydrogen iron powder coating, which facilitates a higher deposition rate compared to non-iron powder electrodes and provides a smooth, stable arc with low spatter. The coating is specifically engineered to resist moisture absorption (H4R designation equivalent performance), which is critical for preventing delayed cracking (hydrogen-induced cracking) in the heat-affected zone.

Welders will appreciate the operability of the Hoballoy 7018-A1. It offers excellent puddle control and slag detachability, which minimizes post-weld cleanup time. The electrode is capable of producing X-ray quality welds in all positions (flat, horizontal, vertical, and overhead). It is compatible with both AC and DCEP currents, although DCEP is often preferred for its smoother arc characteristics and deeper penetration control. Proper storage and handling are recommended; once opened, electrodes should be stored in a rod oven to maintain their low-hydrogen properties.

Technical Specifications:

• AWS Class: E7018-A1
• Diameter: 3/32" (2.4mm)
• Current Type: DCEP / AC
• Alloy Type: Carbon-Molybdenum
• Primary Application: Boiler tubes, pressure piping, C-Mo steel fabrication.