Silver Contact Materials Ultimate Guide 2025
Chende 15-Year Professional Factory Direct

Published: December 03, 2025 | 18 min read

As a 15-year factory, Chende has delivered 3.8 billion+ silver contacts worldwide. Today we fully open our internal material database.

1. AgNi (Silver-Nickel) – Cost Champion in 2025

AgNi10/15/20 is still the most popular for relays and household appliances. Lowest contact resistance ≤2mΩ, perfect for high-speed riveting.

2. AgSnO₂ & AgSnO₂/In₂O₃ – Export & New Energy Mainstream

RoHS compliant, 3–5× longer life than AgNi. Best for EV BMS, charging piles, solar inverters.

3. AgCdO15/Cu – Classic but Restricted

Excellent anti-welding, but cadmium toxic. Only used in some domestic legacy contactors.

4. AgW50-70/Cu – Heavy Current Champion

For ≥500A high-voltage breakers.

5. AgC5-10 – Best for DC Anti-Welding

Silver graphite prevents material transfer in DC contactors.

6. Bimetal & Tri-metal Design

99% contacts are Ag alloy + Cu base, or Ag/Cu/Fe tri-metal for lower cost.

7. 2025 Real Factory Comparison Table

Material	Silver %	Life (×10⁴)	Anti-Welding	Resistance	Price Index	Application
AgNi10–30	70–90%	10–50	★★☆☆☆	≤2mΩ	1.0	Signal & Household Relay
AgSnO₂(12)	85–88%	50–200	★★★★★	≤5mΩ	1.4	EV / Solar / Export
AgCdO15	85%	30–100	★★★★★	≤3mΩ	1.2	Restricted
AgW50–70	30–50%	5–30	★★★★☆	10–20mΩ	3.5	≥500A Breaker
AgC5–10	90–95%	20–80	★★★★★	≤8mΩ	1.8	DC Contactor

Why Choose Chende for Your Silver Contact Needs?

As a 15-year China factory, Chende specializes in custom bimetal silver contact rivets and tri-metal contacts. Our AgNi10 series offers the best cost for household relays, while AgSnO2(12) ensures RoHS compliance for EV applications. With same-day quotes and free samples, we help you reduce 50% production costs.

Common Questions About Silver Contacts (FAQ)

• What is bimetal silver contact? A composite of silver alloy layer + copper base for better conductivity and cost savings.
• AgNi vs AgSnO2: Which for EV relays? AgSnO2 for longer life and anti-welding; AgNi for low-cost signal relays.
• Is AgCdO15/Cu still available? Yes, but restricted in EU—switch to AgSnO2 for export.

2025 Silver Contact Price Trends

Silver prices up 15% YoY, but Chende bulk orders start at USD 0.011/pc for AgNi. Contact us for latest quotes.