We are currently using what is called a ceramic finish on our blades. The trade name is Cerracoat. It is used on automotive parts like racing headers. This baked on finish provides good corrosion resistance and high lubricity. it is hard and durable yet it will still scratch just like the blued surface of a gun. The coating will wear away with use, over time, and if you cut extremely abrasive materials it will scratch or wear more rapidly. Our warranty does not cover scratches or wear on the blade.