/diy/ - Do It Yourself

How do I solder to what seems to be a steel tab?
Repairing an old film camera, a watch battery leaked, ate the negative battery wire on the battery contact.

I have tried plenty of flux, multiple soldering irons, but solder absolutely refuses to stick. I've sanded the tab. I have heated the tab for a long time.

Never had solder not stick like this in my life.