32874 - Böhler ERCuSn-A Phosphor Bronze MIG Wire .045 15kg Spool

Premium Phosphor Bronze MIG Wire for Industrial Applications

The Böhler Welding ERCuSn-A MIG Wire is a high-grade copper-tin alloy designed for professional welding operations requiring superior strength and corrosion resistance. Commonly referred to as Phosphor Bronze A, this .045-inch diameter wire is engineered to meet the rigorous demands of joining copper base metals, specifically tin-bronzes, and is exceptionally effective for surfacing applications on steel and cast iron. The addition of tin (approximately 5-6%) increases the wear resistance of the weld deposit, making it an excellent choice for building up bearing surfaces and other components subject to friction.

Packaged in a substantial 15kg S300 wire basket, this product is tailored for high-volume industrial environments. The S300 spool ensures compatibility with most standard industrial wire feeders, providing a smooth and consistent wire payout that minimizes downtime caused by tangling or feed interruptions. Böhler Welding is renowned for its metallurgical expertise, and this wire reflects that legacy with a clean surface finish and consistent chemical composition, ensuring reliable arc characteristics and defect-free welds.

One of the standout features of the ERCuSn-A alloy is its versatility in joining dissimilar metals. It is frequently used to weld copper or bronze to steel, a common requirement in artistic fabrication, marine repair, and heavy equipment maintenance. The deposit offers excellent resistance to seawater corrosion and industrial chemical environments. When used with 100% Argon or an Argon/Helium mixture, welders can achieve a clean, aesthetically pleasing bead with minimal spatter. Whether you are repairing marine propellers, fabricating bronze sculptures, or overlaying shafts, the Böhler ERCuSn-A provides the mechanical properties and ease of use necessary for high-quality results.

Key Applications

• Joining copper and copper-tin bronzes


• Surfacing and overlay on steel and cast iron


• Repairing bearing surfaces and guides


• Welding dissimilar metals (Copper/Bronze to Steel)


• Marine component fabrication and repair