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                                  Paste Brazing Fluxes

                                  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.

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

                                  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

                                  APW

                                  1000-1600°F
                                  538-871°C

                                  Acid or
                                  alkaline cleaner

                                  Yes

                                  No

                                  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

                                  WSK

                                  1000-1700°F
                                  538-927°C

                                  Acid or
                                  alkaline cleaner

                                  Yes

                                  No

                                  Yes

                                  WSP

                                  1000-1700°F
                                  538-927°C

                                  Acid or
                                  alkaline cleaner

                                  Yes

                                  No

                                  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


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