Low down time and high productivity. Optimum hardness for wear resistance. H13, M2, T1, D2, LD, 6CrW2Si(1.2550),... Rods shear blade material:5CrNiMo,5CrW2Si,6CrW2Si,3Cr2W8V,4Cr5MoSiV1(H13) This series of shear blades which is developed by our company , the life is above 3-5 times of the overall alloy tool steel bit , and may carry on the pre-protection and repair.Standard specifications-Machine ...