Originally posted by DTM
I dont believe Superman capable of damaging Primary Adamantium, such Ultrons literally laughed when hit in the face by Thor and Wonder Man together. Now Id say Superman is stronger than Thor, but not by That much, not to the level that Thors hammer strikes do nothing to Ultron, but Superman can rip into him - not even close.
I don't know of a single time primary adamantium has been damaged. It can be altered at the molecular level, but you aren't going to destroy it by physical means. It's indestructability is its signature and what distinguishes primary and secondary.