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Phosphorus brazing alloys

Phosphorous brazing is dedicated for use in brazing of copper pipes in e.g. cooling system, and can be used without the use of flux for cleaning.

In addition to not needing flux, the silver content is also lower than in the classic silver brazing alloys, which makes it significantly cheaper to use.

Product nameCompositionMelting range (°C)ISO 17672Product info
Ag
Cu
P
18%
75%
7%
Ag
Cu
P
18%
75%
7%
645CuP 286
Ag
Cu
P
15%
80%
5%
Ag
Cu
P
15%
80%
5%
645-800CuP 284
Ag
Cu
P
6%
86,75%
7,25%
Ag
Cu
P
6%
86,75%
7,25%
645-720CuP 283
Ag
Cu
P
5%
89%
6%
Ag
Cu
P
5%
89%
6%
645-815CuP 281
Ag
Cu
P
2%
91,5%
6,5%
Ag
Cu
P
2%
91,5%
6,5%
645-825CuP 279
Cu
Ag
P
75%
17,75%
7,25%
Cu
Ag
P
75%
17,75%
7,25%
643-644