The battery springs are offered in a choice of two materials, nickel-coated music wire or silver-coated beryllium copper.
We can provide custom designs for battery springs.
Nickel Coated Music Wire(nickel-plated carbon steel spring wire): Since most alkaline batteries have nickel-plated containers, a nickel coating for the metal contacts is suitable. The use of similar material removes the possibility of galvanic corrosion and aids in wear resistance. Nickel will also tend to wipe and aid in breaking down the oxide that can form on the battery metal contact surface. In addition, a nickel coating will provide general corrosion resistance and is an excellent conductor of electricity.
Silver Coated Beryllium Copper: Beryllium Copper is among the hardest, strongest, and most wear-resistant of copper alloys. The silver coating further enhances electrical and thermal conductivity. The electric conductivity is 65-70% that of copper; the strength and fatigue resistance are comparable to higher beryllium alloys. The light silver plating allows for easy soldering. Beryllium copper is corrosion resistant in various environments and is both non-magnetic and non-sparking.