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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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