Brass Electrical Contact Spring

Selection of Material Thickness

The selection of material thickness for brass conductive contact springs is a core link that directly determines electrical conductivity, mechanical strength, fatigue resistance and service life. Commonly used thicknesses range from 0.1 mm to 1.0 mm. Thin materials below 0.3 mm are suitable for micro-contacts in compact electronic products, featuring good flexibility and low contact resistance, but with relatively low structural strength. Thicknesses between 0.3 mm and 0.6 mm balance elasticity and rigidity, making them the most widely used specification for connectors and switches. Materials thicker than 0.6 mm are mainly used in high-power and high-load scenarios, providing stable contact pressure and strong impact resistance. In actual design, thickness is matched with contact force, current load and installation space to ensure stable conduction and long-term elasticity without plastic deformation.

Stamping Technology

Stamping technology for brass conductive contact springs emphasizes precision, consistency and surface quality. High-speed precision stamping presses with closed-loop control are generally adopted, with machining accuracy controlled within ±0.01 mm to meet the dimensional requirements of tiny contact structures. Key processes include blanking, bending, forming, shaping and deburring. Material heat treatment and surface treatment are matched to improve elasticity and conductivity. The stamping die uses highspeed steel or hard alloy to ensure mass production stability and reduce burrs and deformation. Progressive dies are widely used to realize one-time forming from strip to finished product, improving efficiency and consistency. Strict control of springback and stress distribution in the bending process ensures stable contact pressure and reliable performance in plug-and-use and long-term working conditions.

Application Scope

Brass conductive contact springs are widely used in many fields requiring reliable electrical connection and elastic contact due to their excellent conductivity, processability and cost-effectiveness. They are commonly used in consumer electronics such as mobile phones, laptops, tablets and smart watches for battery contacts, signal connection and grounding components. In connectors, switches, relays and sockets, they provide stable contact pressure and low-resistance conduction. They are also used in automotive electronics, including vehicle controllers, sensors and lighting systems, adapting to vibration and temperature change environments. In addition, they are widely applied in communication equipment, smart home, medical devices and industrial instruments, becoming essential precision elastic components for ensuring stable circuit connection and signal transmission.