Carbide sintered rods with two straight coolant hole: Diameter fro 0.3 to 42mm Table of grade and properties of carbide rods. Grade ISO Cobalt Grain Size Hardness Density TRS (%) (μm) (HRA) (g/cm3) (MPa) YG3X K01-K05 3 0.8 92 14 2000 YG6 K10-K20 6 1.2 90.5 14.95 2200 YG6X K10-K20 6 0.8 91.5 14.95 2450 YG8 K20 8 1.2 89.5 14.8 2700 YG15 K30 15 1.2 87.5 14 2400 YL10.2 K20-K30 10 0.8 91.5 14.4 3500 STK12 K30-K40 12 0.6 92.5 14.1 4000 Carbide sintered rods with two straight coolant hole.