NS116 - Nickel Silver Brazing Rod 1/16" - RBCuZn-D Alloy - 10lb

Technical Overview of Nickel Silver (RBCuZn-D) Filler Metal

The Techniweld Nickel Silver 1/16" TIG Rod (SKU: NS116) is a premium copper-zinc-nickel alloy classified under AWS A5.8 as RBCuZn-D. Despite its name, "Nickel Silver" contains no elemental silver; the designation refers to its silvery appearance resulting from the approximately 10% nickel content added to the brass matrix. This specific metallurgy significantly enhances the mechanical properties of the deposit, yielding a tensile strength in the range of 70,000 PSI, which is considerably higher than standard naval bronze or low-fuming bronze alloys.

This filler metal is engineered for high-integrity joining and surfacing applications. It exhibits excellent wetting characteristics on ferrous metals, including carbon steel, alloy steels, and cast iron. The addition of nickel not only boosts strength but also improves corrosion resistance and toughness. In oxy-fuel brazing applications, it is frequently used with a borax-boric acid flux to dissolve surface oxides and ensure capillary action. For TIG (GTAW) welding, it can be used with DCEN polarity, although it is more traditionally associated with brazing processes. The 1/16" diameter allows for precise heat control on thin-walled tubing and delicate parts, minimizing the heat-affected zone (HAZ).

Industrially, RBCuZn-D is the filler of choice for carbide tipping of tools due to its ability to absorb shock and resist fatigue. It is also extensively used in the fabrication of tubular steel structures, such as bicycle frames and furniture, where high joint strength and a steel-like color match are required. The alloy's low fuming properties improve operator safety and visibility during the deposition process. This 10 lb tube packaging ensures a sufficient supply for production environments or extensive repair projects.