Shredder blades are part of the shredder machines. Shredder blade materials are generally 9crsi, Cr12MoV, SKD-11, of which 9CrSi is alloy tool steel. This kind of material has high hardness and good wear resistance, but it is brittle and suitable for rubber, fiber, paper, and other materials. Soft waste materials, Cr12MoV, and SKD-11 are cold work die steels. These two materials have similar properties, strong abrasion resistance, and impact resistance, suitable for shredding wood, waste furniture, high-hardness plastics, etc.