Will materials like bronze, titanium or platinum trigger a nickel allergy like some stainless steel bracelets do?
Titanium is excellent, it’s hypoallergenic – it is used in medical tools for that reason. Same for platinum.
Avoid bronze.
If you have a nickel allergy, then alloys containing nickel will trigger an allergic reaction. Bronze is an alloy that commonly contains nickel. Titanium and platinum typically do not.
Bronze probably will (it is often alloyed with nickel). Titanium is usually not alloyed with nickel (except as nitinol, a shape-memory alloy used in things like orthodontic braces and vascular stents) so it should be okay. Platinum is also not usually alloyed with nickel except for research and technological applications (i.e. not watches, which are considered jewelry; jewelry-grade platinum is not alloyed with nickel), so you should be okay with platinum cases/bracelets on watches as well.
What stainless steel bracelets have you run into that caused a reaction? Would be good to know which ones to avoid. I’ve never had a reaction with stainless steel, they are supposed to not cause any issues.
I love my Casio Oceanus but if I wear it for a few days in a row I’ll start breaking out. Also the clasp on my Laco does the same thing. I actually never had an issue with the bracelet on my Orient Mako.
Now I’m thinking about getting a Pelagos as a GADA watch. If the titanium doesn’t cause a reaction that’s a huge bonus.