Minimum recommended silver % for boiler build

[Blue HeelerParticipant @blueheeler]

Building a small vertical copper boiler, what’s peoples recommended minimum silver % for the silver solder for the  boiler build?

[JasonBModerator @jasonb]

Not sure what the cadmium situation is downunder. If you can use cad bearing solder then 42% which was the old Easyflow No1 percentage. If you can’t use Cad bearing then a higher silver content keeps the characteristics similar but needs to be 55%, this is the lowest melting point one.

[Blue HeelerParticipant @blueheeler]

Thanks Jason, I can get 45% Silver Solder with Cadmium locally (an hour away).

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