302 SS is exactly like SS 304 kd, so there is no issue about biocompatibility. Titanium of course is the best of all. As for other options, there is no other option. Dicodes wire is a wire that is never tested from labotratories, so no one knows if its healthy. Metals need tests for a lot of years to be proved as healthy for humans. It also contains Ni and Fe. I dont see it as a healthy oneImeo - since health is also a primary concern why not use something like 316LVM SS or 317L for maximum biocompatibility? Is 302 good enough? I personally would be glad to pay a little more for better quality wire.
I know you mentioned titanium as the next option, but will there be any other options? Like NiFe30 (Dicodes resistherm-type wire) perhaps?
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