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Silver-based brazing paste
This series of silver solder has excellent process performance, low melting point, good wettability and joint filling performance, corrosion resistance, low resistivity, and high mechanical strength. Can be welded (except aluminum, titanium, magnesium) most non-ferrous and ferrous metal materials. It is widely used in the fields of medium and low voltage electrical appliances, refrigeration accessories, automotive electronics, super hard tools, etc. It is a type of brazing paste with extremely wide applications.
Silver-based solder paste |
Element/wt.% | Melting range/℃ | applicability | ||||
Ag | Cu | Zn | Sn | Trace elements | |||
FK-Ag5CuZn | 4.5~5.5 | 54.0~56.0 | 38.0~42.0 | - | 0.0~2.0 | 820~870 |
Welding copper, copper alloy, etc. |
FK-YAg15CuZnSn | 14.5~15.5 | 42.0~45.0 | 38.0~42.0 | 1.0~1.5 | 0.0~3.5 | 695~790 |
Low silver content, high welding strength, |
FK Ag25CuZnSn | 24.0~26.0 | 39.0~41.0 | 31.0~35.0 | 1.5~2.5 | 0.0~2.0 | 680~760 |
Can weld copper, copper alloy, silver alloy, |
FK-Ag30CuZnSn | 29.0~31.0 | 35.0~37.0 | 30.0~34.0 | 1.5~2.5 | 0.0~2.0 | 665~755 | |
FK-Ag40CuZnSn | 39.0~41.0 | 29.0~31.0 | 26.0~29.0 | 2.0~3.0 | 0.0~3.0 | 650~710 |
Low melting point, good fluidity, suitable
|
FK-Ag45CuZnSn | 44.0~46.0 | 26.0~28.0 | 23.5~27.5 | 2.0~3.0 | 0.0~3.0 | 640~680 | |
FK-Ag50CuZn | 49.0~51.0 | 33.0~35.0 | 14.0~17.0 | - | - | 690~775 | |
FK-Ag56CuZnSn | 55.0~57.0 | 21.0~23.0 | 15.0~19.0 | 4.5~5.5 | 4.5~5.5 | 620~655 | |
FK-Ag60CuZnSn | 59.0~60.0 | 22.0~24.0 | 12.0~16.0 | 2.0~3.5 | 2.0~3.5 | 620~685 | |
FK-Ag65CuZn | 64.0~660 | 19.0~21.0 | 13.0~17.0 | - | - | 670~720 |

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