Metal terminal contacts are especially suitable for applications where structural stability, wear resistance, and environmental durability are critical.
Mechanical Stability of Metal Contacts
Unlike non-metallic connection elements, metal terminal contacts provide:
Firm and repeatable contact geometry
Resistance to deformation during installation
Stable contact performance under vibration and thermal cycling
The mechanical properties of the metal contact directly affect retention force, insertion behavior, and service life.
Common Metal Materials
Metal terminal contacts are typically produced from copper-based alloys selected for electrical and mechanical balance:
Phosphor Bronze – Provides elastic recovery and fatigue resistance for spring-type contacts
Brass – Offers good rigidity, conductivity, and cost efficiency for general applications
Material thickness and hardness are adjusted according to load conditions and contact design.
Surface Treatment & Protection
Surface finishing improves both electrical behavior and durability of metal terminal contacts:
Tin plating for corrosion protection and solder compatibility
Silver plating for enhanced conductivity
Nickel plating for improved wear resistance
Gold plating for high-reliability signal connections
Plating options can be selected based on operating environment and contact requirements.
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