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 resistant to corrosion in aqueous environment. The combination of these properties has made them a desirable material for many types of aqueous environmental applications such as condenser tubes, water intake screens, offshore structures, potable water piping, and electric generator cooling systems. One of the most 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 a variety of forms, they are sheet, paste, sheet, powder, wire, bar, etc. This is to reduce the difficulties of the insertion process between the base metals since the various metals have different physical shapes and properties. The process requires a lot of attention and care to minimize gaps between the metals being joined which could lead to failure of the brazed joints. The basic qualities of these filler metals that are prerequisites for successful base metal bonding are: strength, high temperature workability and corrosion resistance. There are a large number of metals and alloys and they all have different compositions, making it critical to carefully compare and choose filler metals. The properties and characteristics of the filler metals should essentially correspond to the properties of the base metals to be joined. However, filler metals are generally divided based on their operating temperature. Aluminum and aluminum alloys are commonly brazed with filler metals that work… in the middle of paper… ium brazing alloy,” U.S. Patent Publication, Pub. No.: US 2012/0288401 A1 , USA, 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 Losses in Stator Windings of Water-Cooled Generators, GE Power Systems, Schenectady, New York, 2008.[9] 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.