Features of Seleno's Phos-Copper-Silver welding rod: 1) Good fluency 2) Low cost 3) Perfect performance 4) For resistance brazing, gas flame brazing, high frequency inductionbrazing and furnace brazing 5) Joint strength high and conductivity good 6) Flux is necessary when brazing copper or copper alloys phos-copper-silver 7) Brazing alloys with low melting points have good 'wettabilty,' high strength and toughness 8) Ramp rate should be as quick as possible while brazing 9) Joints become bright gray, returning to original copper color once dipped into a 10% sulfuric solution