Grade Polycrystalline Diamond Characteristic Values Work Material Grade Binder Carbon Content (%) Grain Size (μm) Hardness HK (GPa) TRS (GPa) Features Hard Brittle NPD10 — 100 up to 0.05 120 to 130 ≈ 3.15 100% diamond that directly binds nano-order diamond particles with high strength. Demonstrates optimum wear and Material Insert Grades fracture resistance as well as the best edge sharpness. High-density sintered material made of ultra-fine grain diamond DA1000 Co 90 to 95 up to 0.5 50 to 60 ≈ 2.60 that demonstrates optimum wear and fracture resistance and excellent edge sharpness. A Sintered material made of ultra-fine grain diamond that DA2200 Co 85 to 90 0.5 45 to 55 ≈ 2.45 demonstrates both wear and fracture resistance and excellent edge sharpness. Non-Ferrous Metal Micro-grained sintered diamond particles with both DA150 Co 85 to 90 5 50 to 60 ≈ 1.95 machinability and wear resistance. Carbide Coated Coarse sintered diamond particles, with high diamond content DA90 Co 90 to 95 50 50 to 65 ≈ 1.10 for excellent wear resistance. Transverse rupture strength measured with a test piece equivalent to the insert’s PCD layer Cermet SUMIDIA Series M2 SUMIDIA Binderless M4 Carbide CBN PCD Ceramic A35