| Data still to be completed------(<---links) | |
|---|---|
| PRODUCT DATA of Tungsten Carbide |
| Material | Tungsten Carbide |
| General Information | Cemented 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 Spacecraft | rotating balls, metrology, coatings |
| Chemical Composition | WC |
| EXPERIENCE IN PRACTICE |
|---|
| Equivalent Designations | Wolfram Carbide |
| PHYSICAL PROPERTIES |
|---|
| Crystal Structure | α-WC hexagonal, β-WC cubic |
| ELASTIC PROPERTIES |
|---|
| Tensile Modulus | 550 GPa |
| Shear Modulus | 270 GPa |
| Bulk Modulus | 439 GPa |
| Poisson Ratio | 0.234 |
| Speed of Sound (longitudinal) | 6220 m/s |
| ELECTRICAL PROPERTIES |
|---|
| Electrical Volume Resistivity | 2×10−7 Ohm.m |
| THERMAL PROPERTIES |
|---|
| Thermal Conductivity | 84.0 W/m.K |
| Thermal Expansion Coefficient | 5.8 μstrain/°C |
| Melting Range | 2,870 °C |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
|---|
| General Corrosion Status | Exposure to formic, hydrochloric, hydrofluoric, nitric, phosphoric, sulfuric, and other strong acids can result in a relatively rapid deterioration of the binder phase |