Silver-tungsten Alloy
Silver-tungsten alloy is a kind of two-phase structural pseudo-alloy composed of tungsten and silver elements, and is a metal-matrix composite material. With larger differences of physical properties, silver and tungsten cannot be produced by a fusion casting method. Currently, silver-tungsten alloy is generally obtained by a powder metallurgy technology. Technological process: burden mixing -- compression molding -- sintering & infusion -- cold machining. The tungsten-silver alloy has integrated the advantages of tungsten and silver, which include high tungsten melting point (tungsten melting point: 3,410℃) and high density (tungsten density: 19.34g/cm³); silver has superior electric and thermal conductivity, while tungsten-silver alloy (the components generally belong to the range of WCu7~WCu50) features uniform microstructure, high-temperature resistance, high strength, arc ablation resistance and large density.
Technical parameters
| Product Name | Symbol | Silver | Impurities | Tungsten | Density g/cm3 | Electric Conductivity IACS% | Hardness HB≥ | Bending strength |
| Silver-tungsten 30 | AgW30 | 70±1.5 | 0.5 | Allowance | 11. 75 | 75 | 75 | |
| Silver-tungsten 40 | AgW40 | 60±1.5 | 0.5 | Allowance | 12.4 | 66 | 85 | |
| Silver-tungsten 50 | AgW50 | 50±2.0 | 0.5 | Allowance | 13.15 | 57 | 105 | |
| Silver-tungsten 55 | AgW55 | 45±2.0 | 0.5 | Allowance | 13.55 | 54 | 115 | |
| Silver-tungsten 60 | AgW60 | 40±2.0 | 0.5 | Allowance | 14 | 51 | 125 | |
| Silver-tungsten 65 | AgW65 | 35±2.0 | 0.5 | Allowance | 14.5 | 48 | 135 | |
| Silver-tungsten 70 | AgW70 | 30±2.0 | 0.5 | Allowance | 14.9 | 45 | 150 | 657 |
| Silver-tungsten 75 | AgW75 | 25±2.0 | 0.5 | Allowance | 15.4 | 41 | 165 | 686 |
| Silver-tungsten 80 | AgW80 | 20±2.0 | 0.5 | Allowance | 16.1 | 37 | 180 | 726 |
General application: electric industry: connectors, thermal conductors, switch accessories, electric connectors, circuit breaker accessories, switch contacts, electronic equipment parts and other parts and consumable parts; electric welding electrodes, seam welding wheels, spot welding electrodes, radiating fins, electrosparking discharge electrodes, electroerosion machining or electric contact machining, high-temperature-resistant equipment parts needing electric conductivity, arc striking substrates and fasteners of anti-thunder equipment, high-voltage protection plates, counterweights, electronic packaging heat sink materials, radiators, etc.
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