User blog comment:CuchulainSetanta/Captain America vs. Sora/@comment-64.136.27.227-20100826032142/@comment-2217541-20101019203909

I should probably clear this up. Captain America's shield is made from a unique adamantium/vibranium alloy, the only one of its kind. It was made by a fluke, and all attempts to replicate it have failed. It has proven capable to be completely unbreakable by any normal means. The only thing that has proven to be able to break it is matter rearrangement, i.e., actually being able to take the molecules apart at an individual level. And Sora has never been shown to have that in his arsenal...