objects made from iridium alloy should be acidproof

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Right now, there generally isn't much point to the iridium alloy you can get from certain sources, particularly with matsci being in its current state.  An idea I had was to give it the special property of being acidproof, since in real life iridium is one of the few substances that can safely be used to contain hydrofluoric acid.

As an added bonus this ties in with a PR to make certain syndicate items acidproof - lorewise the iridium alloy is used if not developed by the Syndicate.