Hobart Brothers Co. (www.hobartbrothers.com) introduced two new lines of aluminum solid welding wires and TIG cut lengths — Smootharc 4043 and Smootharc 5356 — to its McKay brand of filler metals. Hobart joined Maxal Aluminum in a strategic relationship to offer the new products, calling them the most technically advanced aluminum filler metals available. All the Smootharc products meet the requirements of AWS (American Welding Society) Specification A5.10, making them useable for critical welding on heat exchangers, food manufacturing equipment, transportation equipment, boating and shipyard applications.

Smootharc 5356 is a magnesium-based alloy that provides good strength for structural applications, especially for transportation applications, and it resists hot cracking that could lead to costly rework. It's also suitable for components that need to be anodized. Smootharc 4043 resists weld cracking, and its higher level of silicon provides good wetting action, making it easy for welding operators to use.

Both Smootharc solid wires are available in 0.030-, 0.035- and 0.0489-in. diameters on 1-lb spools or 12- and 16-lb reels; all are shipped in a heavyweight, reusable plastic bag and a sturdy double-wall package to protect the wire from contamination.

The Smootharc TIG cut-lengths are available in 0.0625-, 0.0937- and 0.125-in. diameters in industry-standard 36-inch lengths; the alloy number (4043 or 5356) is stamped on each end, every 12 inches. The cut-lengths ship in 10-lb boxes, four per master package, constructed of the same durable double-wall material as the spools and reels.

The cut-length package features a zip opener that removes approximately eight inches of the carton, which welding operators then can use to re-cap the package, protecting the remaining cut-lengths from the atmosphere. In addition, the packaging features an inner liner that holds the cut-lengths snugly in place to prevent rubbing that may lead to fretting corrosion.