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Copper-based brazing paste

Copper-based solder paste is made of alloy solder powder with copper and phosphorus as the main elements, adding active flux and binder independently developed by Fujing. It has the characteristics of good fluidity and excellent process performance. In addition, the addition of silver to the copper-phosphorus alloy will greatly increase the solder wetting ability, increase the strength and toughness, and lower the melting point. This kind of solder has a low brazing temperature and has a self-brazing effect.
Phosphorus-containing copper-based solder paste is suitable for brazing red copper, copper alloys, silver alloys, etc. The solder paste has good wettability with the base metal to be welded, and the welding strength is excellent. However, phosphorus-containing copper-based solder paste has poor wettability to metal alloys such as iron or nickel, and it is easy to form brittle phosphides at the joint, which increases the brittleness of the joint. It is recommended to use other types of solder paste.
Product serial number
Product description
Parameters
Copper-based solder paste Element/wt.% Melting range/℃ applicability
Ag Cu Sn Ni P Ti
FK-CuSnPNi -  margin  7.0~8.0 0.4~1.2 4.8-5.8 - 590~630

Low melting point, copper, copper
alloy, silver alloy brazing, suitable for
resistance welding, induction welding, flame
welding, ammonia decomposition atmosphere
furnace welding, etc.

FK-CuPSn -  margin  2.0~4.0 - 6.3~7.0 - 690~720
FK-CuSnTi -  margin   15.0~20.0  - - 9.0~10.0  850~890 Diamond brazing, vacuum brazing
FK-Ag5CuP 4.8-5.2  margin  - - 6.5~7.0 - 643~771

Silver-containing copper-phosphorus solder
paste, lower resistivity, better wettability:
brazing of copper, copper alloy,
silver alloy, suitable for resistance
welding, induction welding, flame welding,
ammonia decomposition atmosphere furnace
welding, etc.

FK-Agl5CuP 14.5~15.5  margin  - - 4.8~5.2 - 670~800
FK-Agl8CuP 17.0~19.0 margin - - 6.6-7.5 - 650~680
We could not find any corresponding parameters, please add them to the properties table
广硕泵业科技

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Mail: Firmkim@cn-huaguang.com
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