Round Silver Contact Rivets | AgNi + CuNi Bimetal Manufacturer

Round Silver Contact Rivets | AgNi + CuNi Bimetal Manufacturer

Sub-Category: Precision Rivets | cdsilver.com

Round Silver Contact Rivets: AgNi + CuNi Bimetal Series

Optimizing electrical performance and material cost through advanced cold-heading and composite layering technology.

Round AgNi Silver Contact Rivets with CuNi base
Figure 1: High-precision round bimetal rivets ready for automated relay assembly.

Why Round Rivets are the Industry Standard

Round silver contact rivets are the backbone of the automated switching industry. Their symmetrical geometry allows for 360-degree feeding in high-speed riveting machines, ensuring a seamless assembly process for automotive relays, thermostats, and household appliances.

The AgNi + CuNi Advantage

Our AgNi (Silver Nickel) working layer provides exceptional resistance to electrical erosion and material transfer. By bonding this to a CuNi (Copper Nickel) base, we solve two critical engineering challenges:

  • Stable Contact Resistance: The nickel dispersion in the silver matrix prevents excessive pitting.
  • Optimized Cost: Reducing silver volume in the rivet shank while maintaining high performance at the head.
Cold-Heading Process: At CD Silver, our round rivets are manufactured using high-speed cold-heading machines. This process aligns the grain structure of the AgNi layer with the curvature of the rivet head, significantly increasing mechanical hardness compared to machined parts.
Cross-section of bimetal silver contact rivet
Figure 2: Metallographic analysis showing the clean metallurgical bond between AgNi and CuNi.

Technical Specifications: Round Rivet Series

Head TypeCommon Sizes (mm)Layer Ratio (Ag/Base)Applications
Flat HeadD: 2.0 - 8.01:2 / 1:3Wall Switches, Power Relays
Round/Dome HeadD: 1.5 - 6.01:1 / 1:2Automotive Signal Relays
Pointed HeadD: 1.0 - 4.0Solid / BimetalMicro-switches, Thermostats

IATF 16949 Certified Assembly

For our automotive partners, consistency is everything. Every batch of Round AgNi+CuNi rivets undergoes rigorous head-to-shank bonding tests to ensure they survive the high-impact forces of automated production lines.

Custom Round Rivet Manufacturing

Need a specific head diameter or custom layer ratio? Our engineering team can produce samples within 7-10 days.

© 2026 CD Silver Manufacturing | Professional Electrical Contact Manufacturer

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