Shredder blades, carbide inserts, tungsten steel blades, serrated blades, blade http://www.njmxdm.com forestry manufacturing shredder blade material is generally 9crsi, Cr12MoV, SKD-11, which 9CrSi of alloy tool steel , such material cutter, high hardness, good wear resistance, but brittle, suitable for rubber, fiber, paper and other materials softer scrap, Cr12MoV and SKD-11 is cold die steel, these two materials with similar performance , with strong wear resistance, impact resistance, suitable for shredding wood, scrap furniture, high hardness of plastics.