ACCUALA20000350000 - ERCuAl-A2 Aluminum Bronze MIG Wire .035 30lb Spool

Industrial Grade ERCuAl-A2 Aluminum Bronze MIG Wire

The ERCuAl-A2 Aluminum Bronze MIG Wire is a premium copper-based filler metal designed for high-performance industrial applications requiring exceptional strength and corrosion resistance. Formulated with approximately 10% aluminum and 1% iron, this alloy (AWS A5.7 Class ERCuAl-A2) is engineered to deliver superior mechanical properties compared to standard copper or silicon bronze wires. It is specifically characterized by its high tensile strength and excellent ductility, making it a critical consumable for heavy-duty fabrication and maintenance operations.

This 0.035-inch diameter solid wire is precision-wound on a 30lb spool, ensuring consistent feedability and arc stability during the Gas Metal Arc Welding (GMAW) process. The iron content in the alloy acts as a grain refiner, significantly enhancing the structural integrity of the weld deposit. This makes it the preferred choice for joining aluminum bronzes, silicon bronzes, copper-nickel alloys, and even ferrous metals. It is widely utilized in the marine industry due to its outstanding resistance to salt water corrosion, erosion, and cavitation, which are common failure modes in propeller shafts and ship fittings.

Beyond joining, ERCuAl-A2 is extensively used for surfacing and overlay applications. Its wear-resistant properties make it ideal for building up bearing surfaces, valve seats, and pump housings that are subjected to corrosive fluids or heavy metal-to-metal friction. When applied as an overlay on steel or cast iron, it provides a durable, low-friction surface that extends the service life of critical machinery components. The wire requires the use of 100% Argon shielding gas to prevent oxidation and porosity, ensuring a clean, sound weld deposit with every pass.

Key Technical Specifications:

• Classification: AWS A5.7 ERCuAl-A2
• Composition: Copper base, ~10% Aluminum, ~1% Iron
• Tensile Strength: Typically 79,000 psi
• Hardness: Brinell 130-150 (approx)
• Current: DCEP (Direct Current Electrode Positive)