Grades Grade Properties Chart Properties of Basic Materials Material SpecificGravity MicroVickersHardness(GPa)Young‘sModulus(GPa)ThermalLinear-ThermalConductivityExpansionCoefficientCoefficient(W/m·°C)(x 10-6/°C)MeltingPoint(°C) Tungsten Carbide WC 15,6 21 690 126 5,1 2.900 Titanium Carbide TiC 4,94 31 450 17 7,6 3.200 Tantalum Carbide TaC 14,5 18 280 21 6,6 3.800 Niobium Carbide NbC 8,2 20 340 17 6,8 3.500 Titanium Nitrate TiN 5,43 20 260 29 9,2 2.900 Aluminium Oxide Al2O3 3,98 29 410 29 8,5 2.050 Silicon Nitride Si3N4 3,17 25 310 29 3,0 >1.900 (Disintegrate) Cubic Boron Nitride CBN 3,48 44 700 1.300 4,7 – Carbon C 3,52 >90 970 2.100 3,1 – Cobalt Co 8,9 – 100 ~ 180 69 12,3 1.495 Nickel Ni 8,9 – 200 92 13,3 1.495 WC- 5% Co 15,0 18 630 79 5,0 – Carbide WC-10% Co 14,6 14 580 75 5,0 – WC-20% Co 13,5 10 530 67 6,0 – High Speed Steel 8,7 8 210 17 11,0 – B14