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PRODUCT DATA of Tungsten Carbide
MaterialTungsten Carbide
General InformationCemented tungsten carbide is a composite material comprised of individual tungsten carbide grains imbedded in a ductile metal binder matrix of either cobalt or nickel
Use in Spacecraftrotating balls, metrology, coatings
Chemical CompositionWC
EXPERIENCE IN PRACTICE
Equivalent DesignationsWolfram Carbide
PHYSICAL PROPERTIES
Crystal Structureα-WC hexagonal, β-WC cubic
ELASTIC PROPERTIES
Tensile Modulus550 GPa
Shear Modulus270 GPa
Bulk Modulus439 GPa
Poisson Ratio0.234
Speed of Sound (longitudinal)6220 m/s
ELECTRICAL PROPERTIES
Electrical Volume Resistivity2×10−7 Ohm.m
THERMAL PROPERTIES
Thermal Conductivity84.0 W/m.K
Thermal Expansion Coefficient5.8 μstrain/°C
Melting Range2,870 °C
RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY
General Corrosion StatusExposure to formic, hydrochloric, hydrofluoric, nitric, phosphoric, sulfuric, and other strong acids can result in a relatively rapid deterioration of the binder phase