C681125036WTR00 - Aufhauser FCB-18 Flux Coated Low Fuming Bronze Brazing Rod 1/8"

High-Performance Flux Coated Bronze Brazing Alloy

The Aufhauser Flux Coated Bronze (Low Fuming) brazing rod is a premium consumable designed for the professional fabrication and MRO sector. Identified by the internal SKU FCB-18, this 3.2mm (1/8 inch) rod is engineered to meet AWS A5.8 RBCuZn-C classifications, offering a versatile solution for joining a wide array of ferrous and non-ferrous metals. The defining characteristic of this product is its extruded flux coating, which provides a precisely metered amount of cleaning action directly at the joint interface. This eliminates the operational inefficiency of manual flux dipping and ensures that the base metal is continuously deoxidized during the heating cycle.

Metallurgically, this alloy is a low-fuming bronze formulation. Traditional brass and bronze brazing filler metals can suffer from excessive zinc vaporization (fuming) when overheated, which poses health risks and obscures the welder's view of the puddle. Aufhauser has formulated this alloy to suppress zinc volatility, resulting in a cleaner shop environment and a more stable arc characteristic under an oxy-acetylene flame. The deposited metal exhibits high mechanical integrity, with tensile strengths typically exceeding 65,000 psi, making it suitable for structural repairs where load-bearing capacity is required.

This rod is particularly effective for maintenance applications involving dissimilar metals. It exhibits excellent wetting properties on steel, copper, copper alloys, and nickel alloys. It is also a standard choice for the repair of cast iron components where fusion welding might introduce excessive thermal shock; the lower temperature of the brazing process preserves the base metal's microstructure. The deposit is fully machinable, allowing for precise finishing of bearing surfaces or sealing faces. Whether used for galvanized iron pipe, automotive bodywork, or general machinery repair, the Aufhauser Flux Coated Bronze rod delivers non-porous, leak-proof joints with exceptional ductility.