Stainless steel is an alloy of combined iron, carbon, and chromium. It contains at least 10.5% chromium (Cr) by weight. Some stainless steels contain up to 20% chromium. Chromium is the element that makes stainless steel rust- and corrosion-resistant.
DLC blades are cutting tools that feature a thin layer of Diamond-Like Carbon coating applied to the blade's surface. DLC is a type of amorphous carbon that exhibits properties similar to those of natural diamond.
How is tungsten carbide recyclable? Yes, it is. Leftover, unsharp blades can either be re-sharpened, or collected and melted again.
Tungsten carbide is the hardest metal there is and it has a comparatively smooth surface compared to other metals. Both characteristics help provide a longer life of the blade.