The core component of Copper Phosphorus Alloy Ring is usually between 80% and 93% copper, and between 5% and 7% phosphorus. It is designed in a ring shape and optimized for high-temperature brazing processes. It can evenly fill the joint when melted. It is a ring welding material made of high-purity copper and an appropriate amount of phosphorus alloy. The appearance presents the unique warm reddish-brown luster of copper. The surface is finely polished, the edges are rounded, and it has excellent oxidation resistance.
| BrazingAlloys | AWS | Chemical Composition（%） | Solidus | Liquidus | Main Uses | |||||||
| Ag | Cu | P | Zn | Sn | Other | F | ℃ | F | ℃ | |||
| BCu93P | BCuP-2 | / | 93 | 7 | / | / | / | 1310 | 710 | 1460 | 795 | Suitable for copper and copper alloy,with good fluidity. |
| BCu86P | / | / | 86 | 7 | / | 7 | / | 1134 | 657 | 1270 | 687 | Mainly used for brazing of hard alloy cutter |
| BCu91PAg | BCuP-6 | 2 | 91 | 7 | / | / | / | 1190 | 645 | 1450 | 785 | Mainly used for brazing ferrous metals, nickel-based alloys and Cu-Ni alloys; it has good fluidity. |
| BCu89PAg | BCuP-3 | 5 | 89 | 6 | / | / | / | 1190 | 645 | 1325 | 720 | |
| BCu88PAg | BCuP-4 | 6 | 86.7 | 7.3 | / | / | / | 1190 | 645 | 1275 | 690 | |
| BCu80PAg | BCuP-5 | 15 | 80 | 5 | / | / | / | 1190 | 645 | 1300 | 705 | |
| BCu75PAg | BCuP-6 | 18 | 75.5 | 6.5 | / | / | / | 1190 | 645 | 1190 | 645 | |
Copper Phosphorus Alloy Ring is known for its excellent stability. Its solidus temperature ranges from 645°C to 1310°C, and its liquidus temperature is between 645°C and 1460°C. This stable thermal property makes it less likely to deform during repeated heating and cooling. BCuP-5 alloy maintains structural consistency in the temperature range of 645°C to 1300°C, which is suitable for long-term high-intensity use. Stability is also reflected in the uniformity of its chemical composition, with an impurity content of less than 1%, reducing unstable factors in the welding process. This property makes it reliable in complex environments, which is particularly attractive to overseas buyers who have high requirements for product quality.
The economical performance of Copper Phosphorus Alloy Ring gives it a competitive advantage in the market. Its low melting point (BCuP-6 starts to melt at 645°C) reduces energy consumption and significantly reduces production costs. The welding efficiency per unit of material is high. When BCu-3 is liquefied at 1325°C, it can fill multiple joints at one time, reducing material waste. Economical performance is also reflected in its long service life. The joints are highly resistant to fatigue and can support thousands of cycles, reducing maintenance and replacement frequency. Especially for overseas customers who produce in large quantities, economical performance makes it a cost-effective choice, especially suitable for budget-sensitive industrial fields.
Copper Phosphorus Alloy Ring is well known for its safe welding characteristics. Its low volatility and low smoke generation (BCuP-4 has no obvious harmful gases when it melts at 1275°C) meet international safety standards. The self-cleaning properties during the melting process reduce the accumulation of oxide slag and reduce the risk of operator exposure to harmful substances. The temperature control range (BCuP-2 from 710°C to 795°C) facilitates operation and avoids safety accidents caused by overheating.
Copper Phosphorus Alloy Ring performs well in the welding of copper components in aircraft engines. The matching of solidus 645°C and liquidus 1275°C ensures the stability of the joint under high temperature and pressure. Rolls-Royce uses this product in its engine manufacturing to ensure the reliability and safety of the components, and it is widely used in the North American aviation industry.
In the copper connection welding of solar panels, Copper Phosphorus Alloy Ring is favored for its stability and weather resistance. BCuP-5 provides excellent filling when liquefied at 1300°C. First Solar uses this material in its photovoltaic equipment to ensure durability for long-term outdoor use, which is particularly popular in the European green energy market.
Copper Phosphorus Alloy Rin is widely used in copper wire welding in railway signaling systems, with outstanding economy and safety. BCuP-6 has excellent anti-vibration performance when melted at 690°C. Siemens uses this product in the production of its signal equipment to ensure the long-term stable operation of the system, which is particularly suitable for Asian high-speed railway projects.
Copper Phosphorus Alloy Ring performs well in the welding of copper pipes in water treatment equipment, and its corrosion resistance and safety characteristics meet drinking water standards. BCuP-3 has no harmful residue when liquefied at 1325°C. Veolia uses this material in its water treatment system to ensure the hygiene and reliability of the pipes, which is particularly favored by the Australian water industry.
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