SIF Phosphor Bronze Gas Brazing Rods - 7% Tin (CuSn) - 1.2mm to 3.2mm Dia.

Sifphosphor Bronze No 8 Gas Brazing/Bronze Rods are phosphor-bronze rods enhanced with 7% tin. They are ideal for fusion welding of phosphor bronze castings, copper alloys, and brass when using oxy/acetylene welding. Additionally, these rods are suitable for TIG brazing on ferrous, stainless, and dissimilar metals. They are especially designed for welding around pipes with a wall thickness greater than 1.6mm.

Features and Benefits

• High Tin Content: Contains 7% tin, ensuring optimal fusion welding capabilities.
• Versatile Welding: Suitable for both oxy/acetylene and TIG brazing processes.
• Compatibility: Ideal for welding phosphor bronze castings, copper alloys, brass, and more.
• Preparation Recommendations: Ensure that the parent metal surface is cleaned thoroughly before welding. For metals containing trace lead, it’s advised to apply in stages, grinding between passes to reduce porosity.

Common Applications

• Oxy/Acetylene Welding: Suitable for welding bronze, brass, copper, and copper alloys. Especially beneficial for crack repair in castings.
• TIG Brazing: Can be used on ferrous and dissimilar metals, especially when parent metal contains trace lead.

Material to be Welded

Commonly used in oxy/acetylene on bronze, brass, copper and copper alloys for applications such as crack repair in castings. The use of flux is normally unnecessary in most applications, but Sifbronze Flux can be beneficial in aiding flow when used on copper which is dirty or oxidised.

Where parent metal contains trace lead (such as in LG2), it is advisable to use Sifphosphor Bronze No 8 in the TIG Brazing process, and apply in stages, grinding between passes to remove lead drawn into the joint and reduce porosity.

Welding Positions

Weldable in all positions and particularly suitable for welding around pipes (with wall thickness >1.6mm). Ensure surfaces of parent metal are cleaned thoroughly before welding.