What is Tungsten Copper Alloy Sheet

Tungsten copper alloy sheet also call copper tungsten alloy sheet, it have very high conductivity provide by tungsten and copper. These tungsten copper sheets have the ability to spread the heat from a concentrated heat source and then dissipate the heat through the layers. They offer an economical solution to many applications, and available in several standard ratios and many thicknesses for tailored TE machining. They are lower weight than WCu composite materials and available in larger and thinner sheet size, at the same time, tungsten copper sheet can be machined by EDM.

WCu composites are made by infiltrating, under vacuum, uniform controlled porous blocks of tungsten with molten copper. This result in a material with an interconnected copper matrix that has high thermal conductivity in all axis, low thermal expansion, and good electrical conductivity, Copper content can range between 10% and 25%.

Our tungsten copper composites to be used extensively in thermal mounting plates, chip carriers, flanges, and frames for high-powered electronic devices. With the thermal advantages of copper with the very low expansion characteristics of tungsten, tungsten copper has properties similar to those of silicone carbide, aluminum oxide, and beryllium oxide. The thermal conductivity and low expansion also make tungsten copper alloy an excellent choice even for extremely dense circuits.The CuW75 tungsten copper alloy is used extensively in thermal mounting plates, chip carriers.

Tungsten Copper Alloy Electrode

Tungsten copper alloy electrode is combined by tungsten and copper, which owns the properties of tungsten and copper. Tungsten copper alloy electrode have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. When switching with moderate contact arcing, the tungsten copper electrode with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper electrode is also used as arcing edges of selector switchblades in transformer tap changers.
Tungsten copper electrode is a good use of high-purity tungsten metal powder and high purity characteristics of the plasticity of copper powder, the advantages of high conductivity, the static pressure molding, high temperature sintering, melting refined copper from the process of composite materials. Tungsten copper electrode owns arc off a good performance, good thermal conductivity, thermal expansion of small, high-temperature non-softening, high-intensity, high-density, high hardness.

Chrome Zirconium Copper Alloy

Chromium zirconium copper alloy are composited by 0.5~1.2% chromium, 0.03~0.3% zirconium and the other is copper. Chromium zirconium copper is often the best choice for applications where a combination of high electrical and thermal conductivity and high strength at higher temperatures is required. The properties of Cu-Cr-Zr are obtained by alloying and through heat treatments combined with cold working. Studies have shown that of all commercially available electrode materials for spot welding mid stee, the lowest electrode costs are obtained with chromium-zirconium copper. The metallurgical behaviour of this alloy is based on transformations at the atomic level. 

Chromium zirconium copper alloy are used widely in areas where high electrical and thermal conductivity are required combined with good mechanical properties. This is a high strength, seam, high conductivity alloy for spot, butt and projection welding which is ideal for plain as well as coated and galvanized sheets.

Uses include Resistance Welding Machine Electrodes, Seam Welding Wheels, Spot Welding Tips, Flash Butt Welding Electrodes, Anvil Contact Bars, Electrical Switch Gear Contacts & Terminals, Electrode Holders, Cable Connectors, Current Carrying Arms and Shafts, Circuit Breaker Parts, Heat Sinks, Short Circuit Rings, MIG welding contact tubes and many other applications where Copper would normally be the ideal choice for High Conductivity but is just not Strong enough.

C18150 Chromium Zirconium Copper is used extensively for cap style resistance welding electrodes. Evidence suggests that it can provide less sticking and resist deformation longer than its chromium copper counterpart in some specific situations.

Tungsten Copper Block

Tungsten copper block is made by the material of tungsten and copper, the manufacturring process is pressed tungsten at high temperature, and then infiltrating with copper.
The physical properties of both tungsten and copper make them not mutually soluble, meaning that one cannot be combined with the other, similar to the way oil and water will not mix. The alloy is made by dispersing the particles of one metal into a matrix or crystallized pattern of another. This makes tungsten copper's "micro-structure" or molecular shape that of a metal matrix composite and not of a true alloy.
Tungsten copper is a copper and tungsten alloy that is used to conduct heat and electricity. Tungsten copper consists of 10 to 50 percent of its weight in copper and the remaining portion is made out of tungsten. The lower the copper content, the higher its density and hardness is.
Tungsten copper block advantage.Tungsten Copper Block (WCu80) remains some good characters of tungsten and copper with good high-temperature endurance, reliable electronic arc burning & corrosion endurance, high specific gravity and strong intensity. Tungsten copper block could be used as contacts of high or medium voltage switcher, radiator of electronic components, electronic emission materials, welding electrodes, home appliance and spare parts for clocks.
Tungsten copper block applications: Tungsten copper block could be widely used in the fields of machinery, electric power, electron, metallurgy, aviation and spaceflight. We used HIP molding plant - high temperature sintered tungsten matrix - copper-impregnated technology, can produce copper for 6-50% of the various pieces of large or profiled, the tungsten-copper alloy material we produced has characteristics of high-density, high thermal conductivity, high strength and hardness, low resistivity, low thermal expansion coefficient and easy machining etc, and has excellent performance in areas of the burning arc of resistance, anti-welded and corrosion resistance.

Tungsten Copper EDM and ECM

Tungsten copper products are usualy used as electrodes in EDM & ECM. The characteristics of the tungsten and copper make the products excellent EDM electrode materials. Tungsten copper alloy have excellent wear resistance, good material removal rates and the ability to retain good detail. They are particularly suited for machining Tungsten Carbides as other electrode materials may be inadequate. Tungsten copper is used for ECM electrodes because it conducts high current & resists deformation & abrasion from the high velocity movement of the electrolyte. Tungsten copper alloy is manufactured by the press, sinter, and infiltrate process; adhering to strict quality checks every step of the way. You can rely on the quality of our tungsten composites to provide consistent, homogeneous materials that yield high and even burning rates.
EDM is a machining method primarily used for hard metals or those that would be impossible to machine with traditional techniques. One critical limitation, however, is that EDM only works with materials that are electrically conductive. EDM or Electrical Discharge Machining, is especially well-suited for cutting intricate contours or delicate cavities that would be difficult to produce with a grinder, an end mill or other cutting tools. Metals that can be machined with EDM include hastalloy, hardened tool-steel, titanium, carbide, inconel and kovar.
EDM is sometimes called "spark machining" because it removes metal by producing a rapid series of repetitive electrical discharges. These electrical discharges are passed between an electrode and the piece of metal being machined. The small amount of material that is removed from the work piece is flushed away with a continuously flowing fluid. The repetitive discharges create a set of successively deeper craters in the work piece until the final shape is produced.

What Is Tungsten Copper Used For?

Properties
Tungsten copper materials conduct heat efficiently without the excessive expansion that would present problems when mounted to other materials. Copper by itself has high thermal expansion properties, making it unsuitable for such applications unless combined with a material such as tungsten.
Powder Form
Tungsten and copper do not form an alloy because their melting temperatures are very different. The composite material is instead made by mixing metal powders. They are then heated and injected into a mold for heat-sink manufacture.
Heat Sinks
Heat sinks are used to conduct heat away from computer chips and integrated circuits, preventing thermal damage. Depending on the electronic device, heat sinks come in different sizes and shapes. Tungsten-copper composites, with copper content (by weight) of 15 to 20 percent, are often used to make heat sinks.

Tungsten Copper Electrode

Tungsten copper electrode is combined by tungsten and copper, which owns the properties of tungsten and copper. Tungsten copper electrode have good resistance to arc erosion, mechanical wear, contact welding and good conductivity. When switching with moderate contact arcing, the tungsten copper electrode with a high copper content may give the lowest erosion. As arcing severity increases, the tungsten copper with the higher refractory content withstand arc erosion better. Tungsten copper electrode is also used as arcing edges of selector switchblades in transformer tap changers.
Tungsten copper electrode is a good use of high-purity tungsten metal powder and high purity characteristics of the plasticity of copper powder, the advantages of high conductivity, the static pressure molding, high temperature sintering, melting refined copper from the process of composite materials. Tungsten copper electrode owns arc off a good performance, good thermal conductivity, thermal expansion of small, high-temperature non-softening, high-intensity, high-density, high hardness.