Originally posted by Grinning Goku
As True adamantium is extremely difficult and expensive to create or manipulate, some parties found a way to duplicate it on a larger and more cost-effective scale, but at the expense of quality and durability. For all practical purposes, Secondary adamantium is indestructible. Conventional weapons, such as ballistic missiles, have no effect on it; it is far stronger than even the most durable of titanium steel compounds. However, extraordinary blunt force (such as a punch from a character with superhuman strength) can warp or break it. Unconventional or alien forms of energy discharges have also been known to warp or damage Secondary adamantium. Writers created Secondary adamantium to deal with supposedly indestructible adamantium having been damaged or destroyed in the past: all such instances were retconned as appearances of Secondary adamantium.
All true, but it makes no difference here anyway. All Hawkeye will accomplish is pissing Hulk off.