00SIBE5 - Harris ERCuSi-A Silicon Bronze MIG Wire .030 10lb Spool

Harris ERCuSi-A Silicon Bronze MIG Wire Overview

The Harris ERCuSi-A Silicon Bronze MIG Wire is a premium copper-based alloy designed specifically for Gas Metal Arc Welding (GMAW). This .030-inch diameter wire is supplied on a standard 10-pound spool with an 8-inch diameter, making it compatible with most industrial wire feeders and MIG welding machines. The alloy composition meets strict AWS A5.7 specifications, ensuring consistent chemical and mechanical properties for critical fabrication tasks. It is primarily utilized for joining similar composition base metals, brass, and for welding these copper alloys to steel.

One of the primary technical advantages of this silicon bronze alloy is its utility in "braze welding" applications. Unlike traditional fusion welding of steel which requires melting the base metal, this wire can be used to join galvanized or coated sheet steels with lower heat input. This process minimizes the disturbance of the zinc coating on galvanized materials, preserving corrosion resistance and reducing burn-through on thin gauges. The wire requires 100% Argon shielding gas to maintain arc stability and protect the molten pool from atmospheric contamination. Preheating is generally not required, which streamlines the welding procedure and improves efficiency in production environments.

Each spool is precision-wound to prevent tangling and ensure smooth wire feeding, which is critical for maintaining a stable arc and consistent bead profile. The packaging includes detailed identification labels showing the grade, size, weight, and heat number, providing full traceability for quality control and compliance requirements. Whether used for artistic fabrication, industrial manufacturing, or repair of copper-alloy components, the Harris ERCuSi-A wire delivers reliable performance and high-quality metallurgical bonds.