Grade: TF20 tungsten steel Hardness: 91 Bending force: 3480 Implied force: 1910 Compression strength: 5390 Impact strength: 34 Uses: It has high hardness, excellent abrasion resistance. IC wireframe, plastic mold, thin blade, such as mold. Carbide: WC-Co grades in this group grades WC and Co as the main element, but often increase in parts of the other elements of group to obtain better performance. These grades due mainly comprising cobalt, WC grains are known as "tungsten cobalt", the flexural strength and toughness of cemented carbide in all types of changes in the wide, and has excellent wear resistance.