◆ The BCuP alloys are self-fluxing  when used for brazing unalloyed coppers, but  the use of a flux is generally recommended when these filler metals are used in brazing special copper alloys, in general , BCuP filler metals are not suitable for  use in brazing

    ◆ Copper-nickel alloys containing 20% or more nickel. Two elements, Arsenic and phosphorus are not used in

    ◆ Steel or low-alloy steel : result in from brittle compounds in brazed joint.

    The BCuP filler metals have good corrosion resistance, but they are severely attacked in

    ◆ Sulfe-bearing atmospheres at elevated temperature, Among the advantages of these filler metals their relatively low cost.

    BAg group

 Alloy

 Composition(w/t%)

 Melting Range(℃) 

 P

 Ag

 Cu

 Sn

 Others

 BCup-2

 6.8~7.5

 -

 Bal

 -

 Less0.2

 710~795

 BCup-3

 5.8~6.8

 4.8~5.2 

 Bal

 -

 Less0.2

 640~805

 BCup-5

 4.8~5.3

 14.5~15.5

 Bal

 -

 Less0.2

 640~815

 BCup-6

 4.8~5.3

 1.8~2.2

 Bal

 -

 Less0.2

 630~790

 BSC-2s

 7.0~8.0

 -

 Bal

 6.5~7.5

 Less0.2

 665~685

 BSC-6s

 6.5~7.5

 1.8~2.2

 Bal

 6.5~7.5

 Less0.2

 660~700