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Thread: Silver soldering small components

May 3, 2020, 02:28 PM #3

thehomeengineer

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Hi Olderdan
I use Johnson Matthey easy flo flux stainless steel (SS) grade for everything (purple tin) steel, brass, copper, stainless and so on. It has a higher temperature tolerance so gives you longer to solder without everything going black as the flux burns off. Rather than the standard easy flow (green tin) This SS grade flux can be used with all solder in their silver solder range. On stainless I normally use easy flow silver solder which is the lower end of the temperature range for silver soldering 650-680 degrees. If you go to the higher end the flux is on its limits and can burn off. Everything has to be spotlessly clean to get a good joint. You can never have to much flux. I Hope this helps please let me know if you need any more information.

The Home Engineer

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