Silver Tungsten Carbide Rod

1. Definition
Silver tungsten carbide rods are composite materials made by mixing silver and tungsten carbide powders, cold pressing them into rod shapes, and sintering at high temperature. They serve as raw or semi-finished products for fabricating electrical contacts and contact tips.

2. Key Features
High Conductivity + High Hardness: Combines silver's electrical properties with tungsten carbide's exceptional hardness and wear resistance.

Good Machinability: Can be processed using turning, milling, drilling, or brazing, ideal for CNC manufacturing.

Uniform Microstructure: Powder metallurgy ensures consistent density and grain structure, suitable for high-precision parts.

Available in Multiple Silver Ratios: Common grades include 10%, 20%, 30%, and 40% silver content, selected based on current and arc-load requirements.

3. Major Applications
Contact Manufacturing Stock: Cut into small parts like squares or disks for producing contact buttons or tips in low- and medium-voltage devices.

Automated Brazing Lines: Used in mass production lines, Ag-WC rods can be brazed to copper or other contact supports for fast assembly.

Base Material for Custom Components: Ideal for high-precision CNC work where complex geometries or embedded contacts are required.

Material for Research and Testing: Used in labs for evaluating arc erosion resistance, contact resistance, and surface degradation under electric load.

4. Comparison with AgW Rods

Property	AgWC Rods	AgW Rods
Hardness	Higher, more wear-resistant	Lower
Conductivity	Slightly lower	Higher
Anti-Welding Performance	Superior	Moderate
Best Use	High arc loads, heavy-duty switching	Moderate current devices