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Phos-Copper Brazing Alloy

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Phosphorus-Copper Brazing Alloy has features of good-flowing ,low price and good workmanship, it needn't use flux .it appropriate for touch- welding ,gas flame welding ,high-frequency welding and welding inside stove ,welding joint has better intensity and electric conductivity .it should use flux when weld copper alloys.

Brazing Alloy
Composition(%)
Melting Range(oC)
Principal areas of application
Cu
Sn
P
Impurities Total
Solidus
Liquidus
 
CuP-1
balance
-
7.5-8.5
< 0.15%
710
780
Use for copper and copper alloy parts , refrigeration compressor , not suitable for brazing attacking shocking bend parts
CuP-2
-
6.5-7.5
710
800
Use for copper and copper alloy parts , suitable for air conditioning , refrigerator , evaporator , heat exchanger and water heater etc
CuP-3
-
6.1-6.8
710
820
Can make into various brazing ring , wires , brazing copper and copper alloy parts , brazing ample clearance tie-in
Cup-3Sn
balance
6.5-7.5
6.5-7.5
640
680
For various copper and copper alloy
Cup-5Sn
4.8-5.8
7.0-8.0
620
670
Use for copper of brass parts of water heater , radiant heating , radiant heating etc
Cup-6Sn
5-6
5-6
650
800
Use for copper or brass parts of water heater , radiant heating , radiant heating etc. brazing ample clearance tie – in
Cup-7Sn
6.5-7.5
6.5-7.5
640
680
Use for copper and copper parts of water heater , water fountain , fuel gas ware , radiant heating and cleaners , polishes etc

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