General InformationTungsten Carbide materials have a unique combination of properties, high compressive strength, hardness and resistance to wear, as well as an ability to withstand shock and impact. Typical applications are valves, flowmeters, ball screws and linear bearings. Balls from this material are also used for ballizing, gauging and ball pens. Material SpecificationComposition Tungsten Carbide 93 - 95 % Cobalt 5 - 7 % Hardness Hra 90.5 - 91.5 Mechanical Properties Density 14.947 - 15.0% g/cm3 Thermal Conductivity 100 W/m/oC Electrical Resistivity 20 u ohms/cm Linear Expansion Coefficient 20 - 400oC 4.9 10-6/oC Linear Expansion Coefficient 20 - 800oC 5.3 10-6/oC Transverse Rupture Strength @ 20oC 2600 N/mm2 Fracture Toughness K c @ 20oC 12 MN/m2 Compressive Strength @ 20oC 6200 N/mm2 Poisson's Ratio 0.22 Magnetic Properties Slightly magnetic