Paste Brazing Fluxes

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Fluxes for Fusion Paste Brazing Alloys have been formulated to complement high-speed, automated brazing operations where quick removal of tenacious surface oxides at high temperatures is required. Generally, brazing fluxes exhibit a highly corrosive nature. Thus, their residue after brazing should be removed whenever possible.

 

Paste Brazing Fluxes

Flux

Fluxing Range* 

Suggested to
Remove Residue

Recommended for Use With*

Silver Base
Filler Metals

Copper/Phos.
Copper/Silver
Phos.
Filler Metals

 Copper/
Zinc
Filler Metals

 STL

1000-1600°F
538-871°C

Acid or
alkaline cleaner

 Yes

Yes

 No

 STK

1000-1700°F
538-927°C

 Acid or
alkaline cleaner

 Yes

  Yes

 No

 STN

1000-1700°F
538-927°C

Acid or
alkaline cleaner

  Yes

  Yes

Yes

 LHK

1000-1700°F
538-927°C

 Acid or
alkaline cleaner

  Yes

  Yes

Yes

 WSA

1000-1700°F
538-927°C

Acid or
alkaline cleaner 

  Yes

 Yes

Yes

 DMX

 1100-1700°F
593-927°C

 Acid or
alkaline cleaner

 Yes

 Yes

 Yes

 BMW

1600-1900°F
871-1038°C

 Acid or
alkaline cleaner

 No

 No

 Yes

 BMA

1600-1900°F
871-1038°C

 Acid or
alkaline cleaner

 No

 No

 Yes
 * Filler metal selected must have a liquidus temperature within the fluxing range specified.
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