Tungsten Copper Disc
1. What's Tungsten Copper Disc?
Tungsten copper disc is a circular composite component made from tungsten (W) and copper (Cu), combining tungsten's high melting point and low coefficient of thermal expansion with copper's excellent electrical and thermal conductivity. CTIA's tungsten copper disc is typically manufactured using powder metallurgy processes, first preparing porous tungsten skeleton, then forming dense composite material through copper infiltration, and finally achieving required size and surface precision via cutting, grinding, and other machining operations. Diameter, thickness, and material ratio of disc can be adjusted according to operating conditions, suiting scenarios such as electrical contact, electrical discharge machining, and heat dissipation of power electronic devices.
2. Characteristics of CTIA's Tungsten Copper Disc
(1) Stable Electrical and Thermal Conduction: Copper content affects electrical and thermal conductivity of material. For instance, typical electrical conductivity of common CuW50 is approximately 54% IACS, while CuW80 is approximately 34% IACS, with specific values varying depending on material standards and manufacturing processes.
(2) Arc Tolerance and Burn Reduction: High melting point of tungsten helps material resist local high temperatures generated by electrical arcs, allowing tungsten copper disc to serve in select switch contacts and discharge electrodes.
(3) Adjustable Thermal Expansion for Better Assembly Compatibility: Tungsten-to-copper ratio affects thermal expansion coefficient of material, where selecting appropriate ratio helps control dimensional changes caused by temperature fluctuations and improves thermal expansion matching with adjacent materials.
(4) Regular Circular Face for Easy Contact: Flat circular face suits surface contact, face-type electrical conduction, and heat transfer, allowing fabrication into parts such as circular contacts, face electrodes, and thermal conductive substrates.
3. Applications of CTIA's Tungsten Copper Disc
(1) Electric Power & Electrical: Used for contacts and arc protection components in high-voltage circuit breakers and vacuum switches, enhancing arc erosion resistance of contacts and reducing material loss caused by arc action.
(2) Electronic Packaging & Heat Dissipation: Used for packaging baseplates and heat dissipation substrates of power semiconductors, lasers, and Radio Frequency (RF) modules, reducing thermal expansion discrepancy between packaging material and chip or ceramic substrate while efficiently conducting heat generated by device.
(3) Resistance Welding: Used for disc electrodes, seam welding wheels, and electrode inserts in resistance spot, seam, and butt welding equipment, reducing electrode burn and thermal deformation while maintaining welding process stability.
(4) Electrical Discharge Machining: Used as electrode blanks for machining molds, cemented carbide, and Polycrystalline Diamond (PCD), lowering electrode wear and improving machining precision and surface quality.
(5) Specialized High-Temperature Equipment: Used as tungsten copper material blanks for select special high-temperature components, meeting heat resistance and heat dissipation requirements under high thermal load conditions, with specific uses determined by part structure and cooling method.
4. Specifications of CTIA's Tungsten Copper Disc
(1) Material Composition: W50Cu50, W60Cu40, W70Cu30, W75Cu25, W80Cu20, and W90Cu10.
(2) Density: Approximately 11.85–16.75 g/cm³, increasing with tungsten content
(3) Electrical Conductivity: Approximately 27%–54% IACS, varying with material composition
(4) Dimensions and Tolerances: Customized according to customer requirements
Leveraging nearly 30 years of expertise in tungsten-copper alloy manufacturing, CTIA GROUP integrates advanced powder metallurgy infiltration technology with precision machining to deliver end-to-end solutions ranging from alloy grade selection and ratio optimization to custom component fabrication, serving power switching, electrical machining, electronic thermal management, and aerospace sectors worldwide.
For any inquiry, please contact tungsten copper manufacturer: CTIA GROUP
Email: sales@chinatungsten.com
Tel: 0086 592 5129696 / 0086 592 5129595
Website: tungsten-copper.com
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