Have you ever heard of hardening stainless steels? I'm fascinated with this kind of stuff because I am interested in metallurgy. And I think more people should take their time to educate themselves. After all, modern (and ancient) life cannot be imagined without metals. And modern life depends so much on steel and stainless steel. For example, I dare you: I bet you won't find a kitchen that doesn't have some kind of steel application. In some areas of applications, regular stainless steel is not enough. Especially those areas where there are high demands and difficult environments, such as high-humidity areas, steel applications need better protection ie more hardness. Apparently, a new treatment called Borinox can improve surface hardness to up to five times. Plus, they promise to improve abrasion resistance, cavitation resistance and cold resistance, just to name a few. Have you ever heard of other ways to harden stainless steels? I would love to learn about more methods!