What is tungsten copper alloy?
Tungsten copper alloy is a composite metal of tungsten and copper, combining many excellent properties of metal tungsten and copper. Tungsten has a high melting point (tungsten melting point is 3410℃, copper melting point is 1083℃), high density (tungsten density is 19.34g/cm3, copper density is 8.92g/cm3); copper has excellent electrical and thermal conductivity. Tungsten copper alloy (composition generally ranges from WCu7 to WCu50) has uniform microstructure, high temperature resistance, high strength, arc ablation resistance, and high density; moderate electrical and thermal conductivity, widely used in military high -temperature resistant materials, electrical alloys for high voltage switches, electrical machining electrodes, microelectronic materials, as parts and components are widely used in aerospace, aviation, electronics, electricity, metallurgy, machinery, sports equipment and other industries.
The two most common products of tungsten copper alloy are tungsten copper alloy rods and tungsten copper alloy plates.
The tungsten copper alloy rod is a rod composed of tungsten and copper elements. The diameter of the tungsten copper rod ranges from 1 mm to 60 mm, and the longest length is 300 mm. The production of tungsten copper alloy rods follows ASTM B702, RWMA class 10, RWMA class 11, RWMA class 12, GB/T8320-2003 and other standards. It has the advantages of high conductive belt heat rate, high material removal rate, low loss rate, high hardness, long service life, high density, uniform structure and excellent surface finish when used in the field of electrospark discharge (EDM) mold manufacturing. It is widely used in military high-temperature resistant materials, electrical alloys for high voltage switches, electrical machining electrodes, and microelectronic materials, and as parts and components, it is widely used in aerospace, aviation, electronics, electricity, metallurgy, machinery, sports equipment and other industries.
Main Composite and Properties
| Type | Density (g/cm3) | Conductivity | HB (MPa) | Size (mm) |
| WCu50 | 11.9~12.3 | ≥55 %IACS | 1130~1180 | Rod: Ø1~50 Length<300 Sheet: Width<190 Length<300 Special type: Width<190 Length<300 |
| WCu40 | 12.8~13.0 | ≥47 %IACS | ≥1375 | |
| WCu30 | 13.8~14.4 | ≥42 %IACS | ≥1720 | |
| WCu20 | 15.2~15.6 | ≥34 %IACS | ≥2160 | |
| WCu10 | 16.8~17.2 | ≥27 %IACS | ≥2550 | |
| WCu7 | 17.3~17.8 | ≥26 %IACS | ≥2900 |
Tungsten copper alloy plate picture Tungsten copper alloy plate is a composite material made by static pressing, high temperatures sintering and copper infiltration process, which takes advantage of the excellent metal properties of high-purity tungsten powder and the plasticity and high conductivity of high-purity copper powder. It has the characteristics of a small thermal expansion coefficient, no softening at high temperatures, high density, high hardness and high strength. It can be widely used in electrical materials (divided into electrical contact materials and electrical processing materials), instantaneous high temperatures materials and military armor-piercing materials. When used as an electrode, it has the characteristics of small electrode material loss and high material removal rate, which greatly improves the processing accuracy and efficiency; when used as some instantaneous high-temperature materials, it can use its copper liquid to evaporate, take away part of the heat and ensure the normal operation of the work; in the military field, the introduction of tungsten copper materials has greatly improved the ability to penetrate armor in some missiles, armor-piercing shells and charge caps. When tungsten copper plates are used for high-voltage discharge tube electrodes, the temperature of the contact material will rise by several thousand degrees Celsius in a few tenths of a second when the high-voltage vacuum discharge tube is working. The anti-ablation performance, high toughness, good electrical conductivity and thermal conductivity of tungsten copper provide the necessary conditions for the stable operation of the discharge tube.
