World steel consumption

If I add molybdenum: this is a molybdenum-free steel. You can't see the plot down here — it's probably on the very bottom — but here it's one second, ten seconds, 100 seconds. This is just a series of steels: zero molybdenum, 0.15 molybdenum, 0.3, 0.38, and a half percent molybdenum. You can see how molybdenum is just changing the nose of that C-curve over from a second to thirty seconds, twenty seconds. I can slow the reaction down by a factor of twenty by adding half a percent moly to the steel. That does cost me a little bit. Presently, it's going to cost me about $100. It used to be $400 a ton. Steel is now $100-a-ton steel. So the question was, why are there so many steels? Well, if you're buying a hundred thousand tons, you want just the right amount of alloy. You don't want to pay for half a percent moly if you can get by with 0.4 moly for the thickness you're interested in. That's why there are so many steels. We use one and a half billion tons a year in the world, and at that quantity and these alloy prices, it's cost-effective.