GEL BRONZE 28AC is a light coated electrode having basic type coating, specially designed for the welding of copper and bronze. The core wire is made of phosphor-bronze. The weld metal contains approx. 93% copper, 6% tin and 0.20% phosphorus for complete de-oxidation. Due to high heat conductivity of copper alloys, preheat of 260˚-370˚ C is recommended and maintained throughout the welding operation on heavy sections. No preheat is required on thin sections or on ferrous base material.

GEL BRONZE 28AC is suitable for welding copper of bronze to steel and for cast iron where a machinable deposit and colour matching is not necessary. Ship’s propellers, bearings, bushings, impeller blades, valve seats, brass, galvanized iron, malleable iron and dissimilar metals, such as mild steel phosphorus bronze and brass.