Material Engineering & Refractory Alloys

CTI specializes in the production of high-performance contact materials, categorized by their thermal resistance and conductivity profiles. Our expertise in powdered metallurgy allows us to engineer specific compositions that balance arc erosion resistance with superior electrical transfer.

  • Operational Range: 75A to 3,000A
  • Standard Compliance: Components for use in UL and IEEE-approved systems.

 

Refractory Metal Composites (High Melting Point)

For applications involving extreme thermal stress and high-frequency switching, we manufacture silver and copper refractory contacts. The addition of Tungsten (W), Tungsten Carbide (WC), or Molybdenum provides the high melting points necessary to resist welding and arc erosion.

  • Silver Refractory: AgW, AgWC
  • Copper Refractory: CuW, CuWC
  • Performance: Engineered for high-voltage environments where durability against mechanical wear and electrical pitting is critical.
  • Best For: High-voltage switchgear, circuit breakers, and grid infrastructure where severe arcing occurs.

Graphite & Silver Composites (High Conductivity)

When maximum conductivity is the priority, CTI provides silver and copper graphite composites. These materials offer excellent lubricating properties and resistance to welding, making them ideal for specific sliding and switching applications.

  • Compositions: AgC (Silver Graphite), CuC (Copper Graphite), and Fine Silver.
  • Thermal Limit: These non-refractory materials are designed for high-conductivity requirements with a thermal ceiling of 950°C (1,742°F).
  • Best For: Precision sliding contacts, signal brushes, and low-voltage distribution.

NEED SPEC SHEET AND ANDREW’S CHART FOR MATERIAL SELECTION