Automotive Hard Silver Plating

Automotive Hard Silver Plating

The machined terminal of AP generally adopts a cylindrical structure, primarily using the female terminal as an elastic structure, and its current transmission method usually adopts the form of a crown spring, hyperboloid spring, and lamella spring and the coating is applying silver material. AP automotive hard silver plating technology is able to be working on every charging interface. And this hard silver plating technology can effectively extend the service life of your car.

Automotive Hard Silver Plating Types

Brass Connector Pin For IEC EV Charging Plug

Applicable to IEC charging connector.AP terminals are the perfect solutions for the high current requirements due to their high ampacity and temperature rise stability.
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Contact Pins For Sae EV Charging Plug

Applicable to SAE chager and it is able to meet the different needs of customers with stable performance.These contacts are the perfect solutions for high current applications. AP's HBS terminals ensure excellent contact safety and low contact resistance.
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Charging Pin Connector For GB/T EV Charging Plug

Applicable to GB/T charging connector. AP provides different machine terminals of variable current and structure to meet GB/T charging connector requirements.
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NACS Connector Pin For Tesla EV Charging Plug

AP NACS Tesla terminal is made of brass paired with beryllium copper, which meets Tesla standards and adapts to different currents to ensure stable current transmission. It can also carry large currents to support fast battery charging; Of course, we are also compatible with different batteries and electric drive systems to ensure their application in different vehicle models and configurations.
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Lamella Contact Pins

The lamella spring structure is used to transmit current, and the structure is relatively compact. It is specially designed for AC charging bases and DC charging bases of electric vehicles.
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Hyperboloid Contacts

The hyperboloid spring structure is adopted to transmit the current. It is a high current, high voltage product and able to be used in clean energy, energy storage, and high current applications.
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Crown Spring Pins

Use crown spring structure to transmit current and the multi-spring design makes the elasticity stable. It has the features of low contact resistance, shock resistance, impact resistance, etc., and is an ideal contact part for connectors.
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Automotive Hard Silver Plating Process

Automotive Hard Silver Plating Process

Hard Silver Plating is a three-step electrochemical process:

  1. Pre-treat: Wash to remove burrs from the terminals

  2. Electroplating: Precipitate the coating material on the noumenon

  3. Post-treatment: Rinse, wash, seal, neutralize, dry after plating

Automotive Hard Silver Plating Functional Property

Corrosion Resistance

Corrosion Resistance

Low Contact Resistant

Low Contact Resistant

High Conductive

High Conductive

Hard Silver Plating Benefits

Hard silver plating offers several benefits across different industries and applications. Here are some key advantages of hard silver plating:


Electrical Conductivity: Silver is one of the best conductors of electricity, surpassed only by copper. Hard silver plating provides a highly conductive surface, ensuring efficient electrical performance in applications such as electrical contacts, connectors, and circuitry.


Low Contact Resistance: The low electrical resistance of silver helps to minimize contact resistance in electrical components. This is particularly important in high-current or low-voltage applications, where even small resistance can lead to voltage drops or heat generation.


Corrosion Resistance: Silver is highly resistant to corrosion, tarnish, and oxidation, making it a durable coating for objects exposed to moisture, air, or other corrosive environments. Hard silver plating helps protect components from degradation and extends their lifespan.


Solderability: Silver plating promotes excellent solderability, allowing for reliable and efficient solder joints. This is crucial in the electronics industry, where proper soldering is essential for creating secure connections between components.


Wear Resistance: Hard silver plating can enhance the wear resistance of objects subjected to friction, abrasion, or repeated use. It forms a hard surface that reduces wear and extends the lifespan of components like connectors, switches, and mechanical parts.


Thermal Stability: Silver has good thermal conductivity, allowing for efficient heat dissipation in applications where temperature management is crucial. Hard silver plating can help in dissipating heat from electronic components, improving their reliability and performance.


Antibacterial Properties: Silver has inherent antimicrobial properties, which can help inhibit the growth of bacteria and prevent the spread of infections. This property is particularly beneficial in medical instruments, where maintaining cleanliness and hygiene is critical.


Optical Reflectivity: Silver is an excellent reflector of light, especially in the visible and infrared spectrum. Hard silver plating is used in optical applications, such as mirrors and reflective coatings, to achieve high reflectivity and improve optical performance.


Aesthetic Appeal: Silver plating adds a visually appealing and lustrous finish to objects, making it popular for decorative and jewelry items. The bright and reflective surface of silver enhances the overall aesthetic value of various objects.


These benefits make hard silver plating a preferred choice in industries such as electrical and electronics, automotive, telecommunications, aerospace, medical, and jewelry manufacturing. However, it's important to consider specific application requirements and consult with plating experts to ensure the best results.

Hard Silver Plating Manufacturing Capability 

1. Equipped with product testing equipment. Implement incoming material inspection, factory inspection and other items. Ensure that every product exported meets the needs of customers. 

2. Equipped with automated, precise processing machines. Precision parts of various sizes and shapes can be produced. So that realize high-quality mass production. 

3. Electroplated hard silver can be used. Electroplated hard silver (suitable for new energy vehicle charging) has good wear resistance, good anti-discoloration ability, more uniform appearance, more stable mass production state, and has lower power consumption under long-term plugging and unplugging state. Excellent contact resistance and good temperature rise control. 

4. Quality assurance of precision parts. 

a. Dimensions meet drawing requirements. 

b. The mechanical properties of the material such as hardness and yield strength meet the requirements of the drawing.

c. Surface treatment such as electroplating meets drawing requirements.

d. Good appearance of parts.

Objects That Can Benefit from Hard Silver Plating

Hard silver plating can offer various benefits to a wide range of objects across different industries. Some objects that can benefit from hard silver plating include:


Electrical and Electronics Components: Hard silver plating is commonly used in the electrical and electronics industry. It provides excellent conductivity, corrosion resistance, and solderability. Connectors, terminals, switches, and other electrical contacts often undergo silver plating to ensure optimal electrical performance and longevity.


Connectors and Contacts: Silver plating is ideal for connectors and contacts that require repeated mating and unmating cycles. The hardness of the silver plating enhances durability and wear resistance, reducing the risk of damage during connection and disconnection processes.


Switchgear and Circuit Breakers: Hard silver plating is employed on switchgear components and circuit breaker contacts due to its low contact resistance, high conductivity, and resistance to arcing and sparking. It ensures reliable electrical performance and extends the lifespan of these critical devices.


Bearings and Bushings: Silver plating can be used on bearings and bushings in various applications. The low friction coefficient of silver reduces wear and enhances lubricity, making it suitable for high-speed and high-load applications where minimizing friction and extending component life is crucial.


Medical and Surgical Instruments: Some medical instruments, such as forceps, scissors, and surgical blades, can benefit from hard silver plating. The antimicrobial properties of silver can help inhibit bacterial growth and improve hygiene in medical settings.


Optics and Mirrors: Hard silver plating is utilized in optics and mirror applications, particularly where high reflectivity and durability are required. Silver is an excellent reflector of light, making it suitable for telescopes, microscopes, lasers, and other optical devices.


Decorative and Jewelry Items: Silver plating is extensively used in the creation of decorative and jewelry pieces. It provides a lustrous, tarnish-resistant coating that enhances the aesthetic appeal of various objects, including cutlery, tableware, picture frames, and fashion accessories.


It's important to note that the specific plating requirements may vary depending on the application and industry standards. Consulting with a professional plating service or expert in the field can help determine the most suitable plating solution for a particular object.

AUPINS provides high performance Automotive Hard Silver Plating and Connectors for You.
No.55 Innovative platform, Shaohua Gongfang, Pingliang Dajie, Jianye District, Nanjing
AUPINS TECHNOLOGY is an independent innovative enterprise specializing in the development and production of electric connector products.