So, you think you've got this ASTM A193 thing down? Here's a chance to truly find out how much you really know about this specification. Our interactive quiz will test your knowledge with 19 tricky questions covering everything from beginner topics, to sneaky issues only wily veterans will know. Take the next 15 minutes and see how good you really are, then spread word to your friends to see who's on top. Hint: this isn't school, so feel free to use any resource (like this site) to help you get the highest level possible.

Those of you smart enough to score 100% will be reward with the deep satisfaction of knowing you're on top of your game and we'll even send you some great Portland Bolt gear.*

* Portland Bolt reserves the right to restrict the number of prizes awarded to employees of the same company and to companies outside of North America. We will award multiple prizes to the same company and to companies outside of North America at our discretion. We also reserve the right to award prizes for 100% correctness on the first attempt.