Phos-Copper Brazing Alloy(No Silver Solder)
1. Introduction
Phos-copper brazing alloy is base on the raw material with the binary alloy of copper-phosphorus. It has good fluidity, low cost, perfect processing property. No need to add flux when brazing copper and silver, and the joint has good strength.
2．Technical Index
Code | Related Standard | Chemical Composition | Melting Temperature | Major Characteristic | Typical Application | |||
P% | Sn% | Cu% | Solidus℃ | Liquidus℃ | ||||
JCuP-1 | CWA:BCu92P | 7.5-8.5 | _ | REM | 710 | 780 | Close to eutectic composition, low melting point, good fluidity, fill into small clearance of brazing seam | Suitable for brazing copper with copper alloy parts, in refrigerator, Fuel gas appliances, etc. Should not be in shock and vibration welding bent parts. |
JCuP-2 | CWA:BCu93P AWS:BCuP-2 | 6.5-7.5 | _ | REM | 710 | 800 | Lower phosphorus content; improve plasticity, higher melting point. | Suitable for brazing copper with copper alloy in air-conditioners, refrigerators, evaporator, heat exchanger, water heater, etc. can be made welding ring, brazing medium gap joints. |
JCuP-3 | 6.1-6.8 | _ | REM | 710 | 820 | Lower phosphorus content; good plasticity, higher melting point. | Can be made kinds of welding rings, flat wires, Suitable for brazing copper with copper alloy parts, and brazing large gap-joints. | |
JCuP-3Sn | CWA:BCu88PAg | 6.5-7.5 | 6.5-7.5 | REM | 640 | 680 | Good spreading property and clearance fill-ability | Suitable for brazing kinds of copper with copper alloy. |
JCuP-5Sn | CWA:BCu86SnP | 4.8-5.8 | 7.0-8.0 | REM | 620 | 670 | Low melting point and good fluidity. | Suitable for brazing copper and brass parts in water heater, electric heater, sanitary appliance, etc. |
Note:1, P: phosphorus; Sn: Stannum; Cu: copper;
2, CWA:Chinawelding association; AWS:Americawelding Society; DVS: German Welding Society
3, REM: Remain;
