Grade: THR-S Hardness: 1570 Bending strength: 3700 Density: 14.5 Usage: suitable for processing a variety of materials, including metals and acid corrosion resistant steel, chrome, nickel - cobalt alloy, titanium alloy, non-ferrous metals, non- metallic materials (roughing / finishing) carbide indexable inserts are now coated with a chemical vapor deposition method carbide, titanium nitride, titanium, aluminum or composite hard layer hard layer. Evolving physical vapor deposition method not only for carbide cutting tools, can also be used for high-speed steel cutting tools, such as drills, hobs, taps and milling. Hard coating as a hindered chemical diffusion and thermal conductivity of the barrier, so that the wear of the cutting tool is slowed down, the coating life of the blade coating compared to about 1 to 3 times.