Copper and copper alloys are widely used in aqueous environmental applications due to their properties in such an environment, copper and copper alloys are antimicrobial , they also have strong mechanical properties and corrosion resistance. in an aqueous environment. The combination of these properties has made it a sought-after material for many types of aqueous environmental applications such as condenser tubes, water intake screens, offshore structures, potable water pipelines and cooling systems. electrical generators. One of the most widely used methods for joining copper and its alloys is brazing. Many different types of pure metals and alloys of brazing filler materials are developed, they are available in various forms, whether sheet, paste, sheet, powder, wire, rod, etc. This is to reduce the difficulties of the process by placing them between the base metals, as different metals have different shapes and physical properties. The process requires a lot of attention and care to minimize gaps in the metals being joined, which could lead to failure of the brazed joints. The fundamental qualities of these filler metals which are prerequisites for successful bonding of base metals are: strength, workability at high temperatures and corrosion resistance. There are a large number of metals and alloys and all have different compositions, making careful comparison and choice of filler metals essential. The properties and characteristics of the filler metals must essentially correspond to the properties of the base metals to be joined. However, filler metals are generally divided based on their working temperatures. Aluminum and aluminum alloys are typically brazed with filler metals that make up the middle of the paper......ium brazing alloy,” US Patent Publication, Pub. No.: US 2012/0288401 A1, United States of Americaa, 2012.[6] DR Sigler, JG Schroth, Y. Wang, D. Radovic, Sulfide-induced corrosion of copper-silver-phosphorus brazed joints in welding transformers, Welding journal, 340-348, vol.86, 2007.[7] A. Valero-Gomez, A. Igual-Munoz, J. Garcia-Anton, “Corrosion and galvanic behavior of copper and copper-brazed joints in heavy brine LiBr solutions,” Corrosion (2006).[8] Joseph A. Worden, Jorge M. Mundulas, Understanding, Diagnosing, and Repairing Leaks in Water-Cooled Generator Stator Windings, GE Power Systems, Schenectady, New York, 2008.[9] B.Kempf, E. Sjöstrom, D. Kaufmann, J. Breme, Universität des Saarlandes Saarbrücken, W. Weise, Esslingen University of Applied Sciences, New filler metals for brazing stainless steel. Deutsche Gesellschaft für Materialkunde.