AgW contact (silver-tungsten alloy contact) represents the highest performance solution for electrical switching applications involving high currents, intense arcing, and frequent operation. This advanced powder metallurgy silver-tungsten contact combines the exceptional electrical and thermal conductivity of silver with the unmatched high melting point and erosion resistance of tungsten, creating a composite material that outperforms traditional contact materials in the most demanding environments.
| Quantity: | |
|---|---|
Our AgW electrical contacts are manufactured using state-of-the-art powder metallurgy techniques, including both powder infiltration and sintering processes. This allows us to tailor the material properties to specific application requirements, from low-voltage control circuits to high-voltage power distribution systems. The resulting tungsten-skeleton, silver-matrix structure provides comprehensive advantages including high hardness, minimal mechanical wear, and superior anti-welding performance.
Parameter | Standard Range | Customization Options |
Tungsten Content | 30% × 90% | Custom alloy ratios for specific performance needs |
Shape Types | Round, square, rectangular, button, rivet | Complex geometries per customer specifications |
Diameter Range | Ø2.0 mm × 25.0 mm | Larger diameters available for high-power applications |
Thickness Range | 0.5 mm × 5.0 mm | Custom thicknesses for enhanced durability |
Manufacturing Process | Powder infiltration, powder sintering | Process optimization for cost and performance |
Solder Layer Options | Pre-sintered silver, copper, or tin-lead alloys | Custom solder compositions |
Unmatched Arc Erosion Resistance: The high melting point of tungsten (3410°C) provides exceptional resistance to arc erosion, significantly extending contact life in high-current applications.
Superior Anti-Welding Properties: The unique composite structure prevents contact sticking and welding even under extreme overload conditions, ensuring reliable circuit interruption.
Excellent Thermal Management: Silver's high thermal conductivity efficiently dissipates heat generated during switching, preventing overheating and thermal degradation.
High Mechanical Durability: The tungsten skeleton provides excellent structural integrity, resisting deformation and wear during millions of switching cycles.
Flexible Design Options: Powder sintering technology allows for independent composite weld layer materials and eliminates pure silver surface layers, enhancing breaking capacity for stationary contacts.
Silver-tungsten AgW contacts are the preferred choice for high-performance electrical switching across these key industries:
Power Transmission & Distribution: Main and pre-contacts in high-voltage circuit breakers, load switches, and disconnectors for utility substations
Heavy Industry: Contacts for large motor starters, welding equipment, and industrial furnace controls
Rail Transportation: Switchgear and contactors for locomotives, light rail systems, and subway trains
Renewable Energy: Inverter contactors and protection switches for solar and wind power systems
Aerospace & Defense: High-reliability electrical systems for aircraft, ships, and military equipment
High tungsten content (70-90%) is ideal for heavy-duty, high-current, and high-frequency switching. Medium content (50-65%) balances conductivity and erosion resistance for medium loads. Low content (30-40%) is best for low-voltage applications prioritizing conductivity and cost-effectiveness.
Yes, all our silver-tungsten contacts are manufactured to meet RoHS and REACH regulations, with lead-free solder options available.
Absolutely, we can bond AgW contact tips to copper, brass, or steel backings to create complete contact assemblies ready for installation.
Our engineering team specializes in developing custom AgW contact solutions for the most challenging electrical applications. Whether you need standard components or fully optimized alloy formulations, we can deliver the performance and reliability your products require. Contact us today to discuss your project, request technical data sheets, or schedule a consultation with our material experts.
