36SILBRO45 - Silicon Bronze TIG Welding Rod 0.045 ERCuSi-A

ERCuSi-A Silicon Bronze TIG Filler Metal - 0.045"

The Silicon Bronze (ERCuSi-A) TIG Welding Rod in 0.045" diameter is a high-performance copper-silicon alloy designed for the Gas Tungsten Arc Welding (GTAW) process. This 10 lb tube of 36" straight lengths provides professional welders with a consistent and reliable filler metal for joining copper, copper-silicon, and copper-zinc base metals to themselves and to steel. The alloy typically contains approximately 3% silicon, which acts as a primary deoxidizer, promoting sound welds with high tensile strength and excellent ductility.

Technical Performance:
This rod is characterized by its high fluidity and low magnetic permeability. It is particularly effective for surfacing parts subjected to corrosion and for joining dissimilar metals. In the automotive sector, ERCuSi-A is favored for TIG brazing applications. The process utilizes the rod's lower melting point (approx. 1866°F) to bond steel sheets without melting the base metal entirely, significantly reducing the heat-affected zone (HAZ) and warping. It is also the preferred filler for welding galvanized steels, as it does not disturb the zinc coating as violently as mild steel fillers, preserving corrosion resistance.

Welding Parameters:
For best results, use DCEN (Direct Current Electrode Negative) polarity with 100% Argon shielding gas. The 0.045" diameter allows for precise control on thin-gauge materials (20-16 gauge). Ensure base metals are clean and free of oxides, oil, and grease before welding. When joining copper to steel, keep the arc focused on the copper pool to avoid overheating the steel. This product meets AWS A5.7 specifications for ERCuSi-A.