Products Description
These are Rivet-type Solid Copper Contacts designed specifically for low- to mid-range electrical connections. Its core feature lies in the "integral" nature of the contact material; the entire contact is composed of a single material-99.99% pure copper wire. This product is commonly used in wall switches, micro switches, and low- to mid-range relays. Compared to high-cost silver contacts, copper contacts, with their highly competitive price and reliable performance, have become the preferred choice for industrial standard parts.
Material Properties and Advantages
Extremely High Conductivity
Utilizing cathode electrolytic copper with an oxygen content <20ppm, the conductivity reaches 58MS/m (IACS≥99.99%), significantly superior to brass or bronze (only 60%-80% IACS). This means that under the same current conditions, Copper Contact Components generate less heat and are more efficient.
Excellent High-Temperature Performance
With a density of 8.9g/cm³ and a melting point as high as 1083℃, copper maintains excellent oxidation resistance even after long-term use at 150℃, with no change in quality, ensuring a long service life of One-piece Solid Copper Contacts.
Key Process Technologies
Cathode Electrolytic Copper Refining
Electrolytic purification is used to increase copper purity to 99.99%, with oxygen content strictly controlled at <20ppm to prevent oxygen embrittlement and cold heading cracking for Integral Copper Contact Rivet.
Multi-Station Cold Heading
High-speed cold heading machines (≤φ25mm) are used to form Electrical Contact Copper Rivets prototypes in one step, achieving a forming rate >98% and a surface roughness Ra ≤1.6μm, avoiding material density damage caused by traditional turning (density maintained at 8.9g/cm³).
Controlled Atmosphere Plating
Nickel plating uses chemical deposition (2-5μm thickness), and silver plating uses pulse electroplating (1-3μm thickness), with a plating uniformity of ±5%, ensuring conductivity and corrosion resistance for Copper Contact Components.
Application Areas
| Low-to-mid-range relays | One-piece Solid Copper Contacts are suitable for electrical systems with high cost control requirements and moderate load current. |
| Wall switches and building electrical systems | Integral Copper Contact Rivet meets the conductivity requirements of daily switching operations while considering cost-effectiveness. |
| Microswitches | Electrical Contact Copper Rivets are suitable for control systems with frequent mechanical actions but low current loads. |
contact us
For samples of Rivet-type Solid Copper Contacts or to match specific project parameters, please contact us. We will provide professional selection advice and technical support.
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