Not quite the same, but recently I cut some small parts out of some
7-17 ph stainless and tried to silver solder them. After that did not
work, I looked in some reference material and found that regular
silver solder is not recommended for 7-17 ph. Naturally the local
welding supply shops have not heard of more than one kind of silver
solder. I remade the parts out of other material.

Dan