Copper Tungsten Mechanical Properties

20 copper and 80 tungsten.

Copper tungsten mechanical properties. At the heart of the switching chamber wcu arcing contacts are exposed to extreme mechanical and thermal stresses. Tungsten and its alloys are used in high temperature applications like welding electrodes high temperature furnace etc. The physical and mechanical properties and melting point of tungsten copper material will be positively or oppositely affected by varying the amount of copper tungsten in the composite. Tungsten copper is frequently used as an electrode material in case that the typical copper contact materials e g.

Tungsten copper heat sinks they are composites of tungsten and copper. Most of copper element is used in manufacturing electrical and electronic equipments such as wirings and components. Heavy duty projection welding electrodes die facings for electro forming and electro forging also facings for upsetting of rivets and studs. Mechanical properties hardness hrb 69 83 77 90 85 98 89 102 94 106.

Tungsten copper for sf 6 circuit breakers. The manufacturing process of tungsten copper alloy is to press the refractory tungsten or tungsten carbide sinter the pressed compact at a high temperature and infiltrate with copper. Tungsten copper wcu materials are used for arcing contacts in sf 6 circuit breakers for high and medium voltage applications. Consisting of pure tungsten w powder suspended in a matrix of copper cu these alloys are readily machinable and known for good thermal and electrical conductivity low thermal expansion being non magnetic good performance under vacuum and resistance to erosion from arcing.

Electrical conductivity iacs rockwell hardness ultimate strength psi cross breaking strength psi density gms cc. It is also used in construction and industrial machine. Cuw is usually a contact for vacuum oil and gas systems. Copper chrome zirconium cucrzr and others have reached their limits.

All of this is done under very closely controlled conditions. The properties when machining. The mechanical and physical properties of tungsten copper alloy vary with composition. By adjusting the content of tungsten we can have its coefficient of thermal expansion cte designed to match those of materials such as ceramics al2o3 beo semiconductors si and metals kovar etc.

Copper tungsten is a good choice for a vacuum contact due to its low cost resistance to arc erosion good conductivity and resistance to mechanical wear and contact welding. Mechanical properties of tungsten comprise of its density tensile strength viscosity vapor pressure.