Tungsten Silver Alloy

Tungsten Silver Alloy Description

W-Ag alloy is an alloy composed of tungsten and silver, with a silver content of 30% to 70%.

The properties of tungsten silver are related to the silver-to-Tungsten ratio. If the tungsten content improves, the electric arc and wear resistance will increase while the thermal and electrical conductivity, on the contrary, will reduce. Due to the unique properties, tungsten silver alloy is widely used where the combination of good electrical and/or thermal conductivity and low thermal deformation is necessary.

Tungsten silver alloy can be used as the nozzle throat liner of solid rockets. In electrical switches, tungsten silver alloys are more used in lower voltage circuit breakers, automatic switches, contactors, etc., where good oxidation resistance, higher electrical and thermal conductivity, smaller contact sizes, and frequent opening and closing operations are required.

Tungsten silver alloy is widely used in high temperature resistant materials, electrical alloys for high voltage switches, electrical machining electrodes, microelectronics materials, as parts and components are widely used in aerospace, aviation, electronics, power, metallurgy, machinery, sports equipment and other industries.

We also provide tungsten carbide silver material.

Grades of Tungsten Silver Alloy

AgW75: This composite is one of the high refractory content tungsten silver materials made by press-sinter-infiltration and normally a high resistance to arc erosion. It is generally used as arcing contacts in large air and oil circuit breakers, line disconnects, re-closures, and in high current switches and contacts. Contact resistance is low enough to protect the higher conductivity current carrying contacts from arc damage. Its resistance to welding makes it a good shorting contact for bi-metal protection in circuit breakers.

AgW70 and AgW50: These composites have more silver than AgW75, which provides higher conductivity and a lower contact resistance. They are used extensively in a large variety of circuit breakers. In this application, a single pair of contacts provides the dual function of carrying the current without overheating, and interrupting the current without excessive arc erosion. They are also used in high current contacts where resistance to contact welding and arc erosion are required. In a variety of DC applications, they offer resistance to metal transfer.

AgW50: This composite has the highest silver content of the press-sinter-repress tungsten silver materials. It exhibits good resistance to contact welding and is used for current carrying contacts in power circuit breakers that encounter high momentary currents.

Tungsten Silver Specification

Tungsten Silver Product Specifications

Tungsten Silver Alloy Applications and Related Industries

● Nozzle throat liner of solid rockets

● Electrical switches

● Lower voltage circuit breakers

● Automatic switches

● Contactors

● High temperature resistant materials

● Electrical alloys for high voltage switches

● Electrical machining electrodes

● Microelectronics materials

● Aerospace

● Aviation

● Electronics

● Power

● Metallurgy

● Machinery

● Electric

● Sports equipment

● Research & Laboratory

Chemical Identifiers

Tungsten Silver Alloy Properties (Theoretical)