Item Hardness, hp and magic items

Do magic items get any bonus to hardness or hp?

Can’t find a rule but if not rust monsters etc just got a whole lot scarier.

There are the possibilities of special materials, but i had that question too. Seems like special materials (Mithril, Adamantite etc.) are the only possibilities to gain more Hardness and HP.

Yeah I was surprised no one else had posted about this one yet.