S125351-033 - Hoballoy E8018-C3 5/32" Low Alloy Stick Electrode (10lb Can)

Technical Overview of Hoballoy E8018-C3

The Hoballoy E8018-C3 is a premium quality low-alloy steel electrode designed for Shielded Metal Arc Welding (SMAW) applications requiring tensile strengths in the 80,000 psi (550 MPa) range. Manufactured by Hobart, this electrode is formulated with a nominal 1% Nickel content in the weld deposit. This alloying element is critical for enhancing the notch toughness of the weld metal, particularly at sub-zero temperatures. The electrode meets AWS A5.5 classification requirements, delivering Charpy V-Notch impact properties of at least 20 ft.lbs. (27 Joules) at -40°F (-40°C), making it suitable for structures subjected to severe cold or dynamic loading.

One of the defining technical features of this electrode is its advanced flux coating. The coating is engineered to be moisture-resistant, which is vital for maintaining low hydrogen levels in the weld deposit (typically H8 or H4 depending on specific batch conditioning). Low hydrogen content is essential when welding high-strength low-alloy (HSLA) steels, T-1 steels, and AR (Abrasion Resistant) plates to prevent hydrogen-induced cracking (cold cracking) in the Heat Affected Zone (HAZ). The iron powder content in the coating assists in higher deposition rates compared to non-iron powder electrodes, improving travel speeds and overall productivity.

The 5/32" (4.0mm) diameter is optimized for filling and capping passes on thicker plate sections. It operates effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC), providing flexibility for various power source configurations. The slag system is designed for easy removal, often self-peeling, which reduces inter-pass cleaning time and the risk of slag inclusions. This electrode is particularly specified for applications in the petrochemical industry, offshore fabrication, and heavy equipment manufacturing where material traceability and mechanical reliability are paramount.