255041824 - ESAB AtomArc 8018 1/8" Stick Electrodes (10lb Sleeve)

Technical Overview of ESAB AtomArc 8018

The ESAB AtomArc® 8018 is a premium low-hydrogen, low-alloy stick electrode formulated to meet the rigorous demands of high-tensile steel fabrication. Classified under AWS A5.5 as E8018-C3 H4R, this consumable is engineered to deposit weld metal containing approximately 1% Nickel. This specific alloying addition is critical for enhancing the mechanical properties of the weldment, specifically providing robust notch toughness at sub-zero temperatures. It is designed for welding steels with tensile strengths in the 70-80 ksi (483-552 MPa) range, ensuring structural integrity in challenging environments.

One of the defining technical characteristics of the AtomArc 8018 is its ability to maintain high impact values at temperatures as low as -40°F (-40°C). This makes it an essential specification for projects involving weathering steels or structures exposed to arctic or severe winter conditions. The electrode features a moisture-resistant coating, designated by the 'H4R' suffix, which significantly reduces the risk of hydrogen-induced cracking—a common failure mode in high-strength low-alloy (HSLA) steels. The 3.2mm (1/8") diameter allows for versatility in positional welding while maintaining a stable arc and controlled deposition rate within the 90-160 amperage range.

Metallurgically, the deposit composition is balanced to provide a yield strength that matches or exceeds the base material requirements for Grade 80 steels. The hermetically sealed steel carton (or sleeve packaging) ensures that the low-hydrogen characteristics are preserved during storage and transport, minimizing the need for immediate reconditioning upon opening. For industrial applications requiring strict adherence to code and superior mechanical performance, AtomArc 8018 remains a benchmark consumable.