Grade: YM80 Density: 14.76 Hardness: 90.9 Flexural strength: 2590 Usage: comprehensive performance, easy to weld, cost-effective tungsten carbide steel, also known as tungsten alloy. Hardness can reach 89 ~ 184HRA, why tungsten steel products (commonly tungsten steel watches), with easy to be worn, hard afraid of annealing, but brittle characteristics. Commonly used in high-precision machining, precision cutting tool materials, lathes, impact drill bit, glass cutter, tile cutter on top of hard afraid of annealing, but brittle. Are rare.