With a razor-sharp, burly 1/8-inch (3.2 mm) thick carbon steel blade treated with a tungsten DLC anti-corrosive black coating, the Morakniv Bushcraft Black Carbon Fixed Blade Knife with Carbon Steel Blade will be one of the strongest and most dependable knives you will own. Morakniv knives made from high carbon steel achieve high hardness, sharpen easily and are exceptionally tough. High carbon steels are preferred in applications that demand durability and frequent regrinding. The material is harder than stainless steel, allowing it to take a sharper edge. The blade is annealed to 56-58 HRC to better withstand stress on the blade when batoning. The edge angle is therefore slightly greater (approximately 27 degrees) to better withstand rough treatment.