Package Price:
$517.56/4.54kg tubeThe UTP A 73 TIG Rod is a premium copper-tin alloy consumable designed for the Gas Tungsten Arc Welding (GTAW) process. Classified typically under AWS A5.7 as ERCuSn-A (Phosphor Bronze), this rod is engineered for joining and surfacing copper and copper alloys, specifically tin-bronzes and brass. The 3/32" (2.4mm) diameter provides excellent control for root passes and fill layers in medium-gauge materials.
This alloy features a high tin content (approx. 6%) which imparts high mechanical strength and excellent corrosion resistance, particularly against seawater and saline atmospheres. It is also characterized by very good sliding properties, making it a preferred choice for surfacing parts subject to metal-to-metal wear, such as shafts, guides, and bearing surfaces. The weld deposit is tough, free of porosity when applied correctly, and offers a color match close to standard bronzes.
UTP A 73 is versatile in its application range. It is suitable for joining copper-zinc alloys (brass) and copper-tin alloys (bronze). It can also be used for TIG brazing of ferrous metals and cast iron where lower heat input and minimal dilution are required. The rod requires a clean weld zone and typically utilizes 100% Argon shielding gas to prevent oxidation and ensure a stable arc. Preheating may be necessary for heavy sections of copper to overcome its high thermal conductivity.
| Additional Information |
|---|
| Brand:UTP |
| Diameter:2.5mm (3/32") |
| Packaging:10 lb Tube |
| Packaging Description:4.54kg-tube |
| Weld Process:TIG (GTAW) |
| Grade:Bare Bronze |
| Material Composition:Copper-Tin Alloy (Bronze), CuSn6 |
| AWS Classification:ERCuSn-A |
| Wire Diameter:3/32" (2.4mm) |
| Shielding Gas Requirement:100% Argon, Argon/Helium Mix |
| Applications:Joining Copper, Surfacing Bronze, Brass Repair |
| Position:N/A |
| Polarity:N/A |
