Phos Copper Brazing Rod is a metal brazing material with a purple-red to reddish-brown appearance. It is primarily composed of copper and phosphorus alloyed in specific proportions, with a typical ratio of 92% Cu to 8% P.
The phosphorus in Phos Copper Brazing Rod exhibits a strong self-deoxidation effect, enabling excellent wetting and spreading during copper-to-copper alloy welding without the need for additional flux. Its wetting angle is less than 35°, allowing it to spread rapidly across the copper surface, improving weld uniformity and density.
Phos Copper Brazing Rod typically operates at brazing temperatures between 710°C and 850°C, significantly lower than high-Silver Solder or pure copper consumables, making it suitable for brazing heat-sensitive parts. Its typical melting point ranges from 710–890°C, resulting in high fluidity and rapid formation of strong welds, effectively saving energy and time.
Standard formulas such as BCuP-2 brazing filler metal can achieve shear strengths of ≥300 MPa. This brazing material demonstrates excellent tensile and shear strength in brazing copper pipe joints, making it suitable for pressure-bearing applications and ensuring long-term stability and leak-proof welds.
Phos Copper Brazing Rods offer strong oxidation and corrosion resistance, making them particularly suitable for use in humid, high-temperature, mildly acidic environments, or in industrial exhaust gas environments. They can withstand salt spray tests for over 96 hours without significant corrosion spots, making them suitable for long-term service life in metal joints.
Phos Copper Brazing Rods are suitable for various brazing processes, including gas welding, induction heating, flame brazing, and resistance brazing. Rod lengths can be customized from 300 mm to 1000 mm, with diameters ranging from 1.5 mm to 5 mm. They support OEM customization and can be used with batch automatic wire feeding equipment, making them widely applicable to automated brazing lines.
Phos Copper Brazing Rods are widely used for brazing copper tubes and accessories in refrigeration compressors, such as air conditioners, refrigerators, and freezers. Their highly dense brazing seams effectively prevent refrigerant leakage. Key brands served include Daikin, Carrier, and Haier.
Phos Copper Brazing Rods enable fast, high-strength welding in copper tube connections for electric water heaters, solar water heating systems, and heat exchangers. Their thermal fatigue resistance makes them particularly suitable for systems with long-term hot water flow, such as those produced by international brands like Rheem and A. O. Smith.
Phos Copper Brazing Rods are used for brazing electrical connections for copper busbars, motor coil terminals, and control systems in urban rail and high-speed rail projects. Phos Copper Brazing Rods achieve stable, vibration-resistant connections without compromising electrical conductivity. Partner brands include CRRC and Siemens Mobility.
In new energy systems, Phos Copper Brazing Rods are used for brazing high-power DC cables and copper connectors, effectively reducing resistance and energy loss. They are particularly suitable for applications requiring extremely high electrical conductivity, such as Tesla energy storage cabinets and LONGi photovoltaic modules.
In the manufacture of copper handicrafts, home hardware, and traditional decorative items, Phos Copper Brazing Rods are widely used due to their resistance to discoloration and their delicate and beautiful welds. They are suitable for the manufacture of copper sculptures, lighting fixtures, and high-end decorative items, primarily exported to traditional copper craft markets such as Italy and Türkiye.
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