... high performance 3,Delivery time:5-7 working days This series is mainly used in large Elongation , low roughness, and other ... is high and the process is simple.Abrasive material:Corundum series:•Brown fused alumina(A) White fused alumina(A)•Single-crystal ... steel,•Hardened steel, chrome steel, nickel steel, carbonitriding steel.SiC series:•Green SiC,Black SiC,•Gray cast iron , boron cast iron ...