XTRweld LFB (Low Fuming Bronze), also known as RBCuZn-C, is a general-purpose copper-based alloy brazing rod ideal for oxyacetylene welding and brazing a wide range of ferrous and nonferrous metals. This filler metal is perfect for joining carbon steel, copper alloys, cast iron, stainless steel, malleable iron, and certain nickel alloys. With excellent ductility, machinability, and low fume generation, LFB is an essential tool for any welding shop. The flux-coated (White) version eliminates the need for external flux, while the bare version should be used with a borax-boric acid-based brazing flux for optimal performance. Available in 1 lb spools and 1/8″ and 3/32″ diameters, this filler metal ensures strong, reliable joints with minimal fume exposure.

• Ensures smooth, consistent welds with minimal oxidation, offering excellent resistance to corrosion and wear.
• Provides strong, durable joints with excellent flexibility and ease of machining after brazing.
• Ideal for joining a variety of ferrous and nonferrous metals, including carbon steel, copper alloys, cast iron, stainless steel, malleable iron, and some nickel alloys.
• Offered in 1/8″ and 3/32″ diameters, available in 1 lb spools, to suit various welding and brazing needs.