Steel is an incredible massive category. For high quality steels (duplex, maraging, PH stainless), you actually don't want much carbon. Since they talk about "a

Steel is an incredible massive category. For high quality steels (duplex, maraging, PH stainless), you actually don't want much carbon. Since they talk about "aging properties" in the article, I'd imagine they're targeting the nicer stuff. This doesn't seem like a process intended for cheap steel.