Reference Grade of sand making machine wear resistance part -- rotor tip set carbide plate raw material Grade Physical Properties Density g/cm3 Coercivity kA/m Hardness HRA TRS ≥N/mm2 YG6 14.82-15.05 12.5-17.5 13.0-17.0 90.5-92.0 1720 YG6K 14.85-15.0 8.5-12 89.4-90.2 2200 YG8 14.62-14.82 10.0-15.0 11.0-15.5 89.5-91.0 1800 YG8C 14.6-14.8 6.3-9.3…