Tri Metal Contact Rivets

Tri‑Metal Contact Rivets are precision-engineered fastening elements designed for reliable electrical and mechanical connections in demanding applications. Each rivet features a three‑layer construction—typically copper, nickel, and silver—bonded through a specialized metallurgical process to combine the superior conductivity of copper with the corrosion resistance and solderability of nickel and silver. With tight dimensional tolerances and a smooth barrel finish, these rivets ensure low contact resistance and consistent performance under vibration, thermal cycling, and high‑current loads.

Send Inquiry

Products Description

Our Tri-Metal Contact Rivets represent a breakthrough in contact technology, integrating three distinct materials into a single, unified structure:
Top & Bottom Layers: High-purity silver alloys (such as AgSnO₂, AgNi, or AgCu), chosen for their excellent electrical conductivity, arc resistance, and low contact resistance.
Middle Layer: A solid copper core, providing mechanical strength, thermal conductivity, and significant cost reduction by replacing bulk silver.
This three-composite contact design creates a "sandwich structure" that retains the critical electrical properties of silver while leveraging copper's robustness and affordability. Unlike conventional single-material contacts, our rivets excel in applications requiring frequent switching or bidirectional movement (i.e., "double sides contacts"), such as in industrial control relays where contacts must move horizontally or vertically to complete circuits.

Key Advantages

Exceptional Cost Efficiency

30-50% Cost Savings: By replacing 60-70% of bulk silver with a copper core, our tri-metal contacts achieve the same performance as full-silver contacts at a fraction of the cost. This makes them an ideal choice for large-scale manufacturing, where material costs directly impact profitability.
No Compromise on Performance: The silver alloy layers maintain superior conductivity (≥99% IACS) and arc resistance, while the copper core ensures structural integrity without sacrificing electrical properties.

Unmatched Technical Reliability

Precision Silver Layer Control: Using advanced cold-forging and composite bonding techniques, we ensure uniform silver layer thickness (head: ≥0.3mm, foot: ≥0.2mm, customizable) with micron-level accuracy (±5μm). This prevents silver layer delamination-a common failure in inferior composite contacts.
Superior Bond Strength: The interface between silver alloy layers and the copper core undergoes rigorous bonding processes, achieving a shear strength >50MPa. This ensures no "silver layer leaking" (silver layer detachment) even after 100,000+ cycles of high-frequency operation, as tested in our in-house labs.

Factory-Direct Quality & Certifications

Vertical Integration: As a manufacturer with our production facility, we control the entire process-from alloy smelting to final assembly-ensuring consistent quality and rapid delivery.
Global Compliance: Our contacts meet international standards (IEC 60947-5-1, UL 486B) and are RoHS/REACH compliant, providing seamless market access across regions.

Trimetal Contacts can save costs 30-65 than Solid Silver Contacts

Innovative Structural Design

Dual-Action Compatibility

The double sides contacts configuration is optimized for "moving contact" applications in relays, where contacts must move horizontally or vertically (e.g., in double-breakpoint relays). The balanced mass of the tri-metal structure reduces inertia, enabling faster switching and lower bounce.

Thermal Management

The copper core dissipates heat 15% more efficiently than full-silver contacts, reducing temperature rise during high-current operation and extending component lifespan by 20%.

Material Synergy

Silver alloys (e.g., AgSnO₂ for arc suppression, AgNi for wear resistance) are selected based on application needs, while the copper core provides a low-cost, high-strength foundation.

We are professional in manufacturing Trimetal Silver Contact

Exquisite Manufacturing Process

Cold Forging Technology

We use precision cold forging to shape the silver-copper composite, preserving the crystalline structure of materials for maximum conductivity and mechanical strength.

Nano-Level Bonding

A proprietary surface treatment ensures atomic-level adhesion between layers, eliminating voids or weak points. This process is validated through non-destructive testing (ultrasonic scanning) and destructive testing (tensile/shear tests).

100% Quality Control

Every batch undergoes rigorous testing for contact resistance (≤5mΩ at 1A), thermal cycling (-40°C to +150°C), and fatigue resistance (100,000+ operation cycles without failure).

Manufacturing Processes of Tri Metal Electrical Silver Contact