TROY, Ohio. July 29, 2010-Hobart Brothers has introduced two new metal-cored electrodes designed for submerged arc welding on chrome-moly steel. The Tri-Mark^® Metalloy B2-S and Metalloy B3-S low alloy submerged arc electrodes both provide weld deposits that withstand elevated service temperatures and improve productivity compared to welding with solid electrodes. Both products also meet American Welding Society (AWS) A5.23 specifications for Low Alloy Steel Electrodes and Fluxes for Submerged Arc Welding and use Hobart HN-511 flux, a high basic agglomerated flux that produces excellent mechanical properties and easy-to-remove slag.

Compared to equivalent solid electrode classifications, the Metalloy B2-S and B3-S electrodes provide higher deposition rates and better penetration profiles, both features that improve productivity and weld quality. They also bridge moderate gaps more readily than solid electrodes, helping to minimize weld defects like undercut or lack of fusion.

The Metalloy B2-S submerged arc electrode deposits weld metal with 1-1/4 percent chrome and 1/2 percent molybdenum and can be used for high service temperature applications, including heat exchangers, boiler and power piping, and valves. The welds created by Metalloy B2-S electrodes maintain good tensile strength in the as-welded or post-weld heat treated (PWHT) condition and offer reliable corrosion resistance.

The Metalloy B3-S electrodes provide a weld deposit with 2-1/4 percent chrome and 1 percent molybdenum, while also creating weld deposits that maintain high strength and provide good oxidation resistance at service temperatures up to 800 degrees Fahrenheit (425 Celcius). These electrodes work well on applications in the power generation industry.

Hobart Brothers offers Metalloy B2-S and Metalloy B3-S submerged arc electrodes in diameters of 3/32, 1/8 and 5/32 inch in 60 lb. coils. Additional drum packaging is available upon request.

Hobart Brothers is dedicated to the highest level of Performance Welding™. For product specification sheets or to learn more about Hobart Brothers products, visit hobartbrothers.com, email hobart@hobartbrothers.com, call 1-800-424-1543, fax 1-800-541-6607, or write Hobart Brothers Company, 101 Trade Square East, Troy, OH 45373.

Hobart Brothers Company of Troy, Ohio, is a leading manufacturer of welding filler metals marketed under the brand names Hobart, Tri-Mark, McKay and Corex. Hobart Brothers Company is a wholly owned subsidiary of Illinois Tool Works, Inc. based in Glenview, Ill. ITW is a multinational manufacturer of a diversified range of value-adding and short-lead-time industrial products and equipment.