S125458-035 - Hobart Hoballoy E8018-B2 3/16" Stick Electrode 50lb Can

Technical Specification: Hobart Hoballoy 8018-B2

The Hobart Hoballoy 8018-B2 is a low-hydrogen, iron powder electrode designed specifically for the welding of higher strength steels, particularly those requiring creep resistance at elevated temperatures. Classified under AWS A5.5 as E8018-B2, this consumable is engineered with a chemical composition containing nominally 1.25% Chromium and 0.5% Molybdenum. This alloy composition makes it the standard choice for joining Cr-Mo steels used extensively in power generation and petrochemical industries.

A critical feature of the Hoballoy 8018-B2 is its advanced coating formulation. The coating is designed to resist moisture pick-up (hygroscopy) even under conditions of high relative humidity and heat. By maintaining low moisture content in the coating, the electrode significantly reduces the amount of diffusible hydrogen introduced into the weld metal, thereby mitigating the risk of hydrogen-induced cracking (cold cracking) and starting porosity. This is essential when welding thick-walled pressure vessels and piping where thermal stresses are high.

The electrode operates effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC). It provides a stable arc with controlled fluidity, allowing for single and multiple pass applications in all welding positions. The mechanical properties meet or exceed the 80,000 psi (550 MPa) tensile strength requirement, ensuring structural integrity in high-stress environments. The 3/16-inch diameter format is optimized for higher deposition rates in heavy-wall fabrication.

Key Technical Data:

• Classification: AWS E8018-B2
• Alloy Type: Chrome-Moly (1-1/4 Cr, 1/2 Mo)
• Current: DCEP or AC
• Tensile Strength: >80,000 psi
• Packaging: 50 lb Industrial Can