Mechanical Properties of Solder Clod Beryllium-Copper Alloy Flat Springs

Abstract

Mechanical properties and corrosion resistance of solder clad beryllium-copper alloy springs have been investigated.
(1) Cold worked solder clad beryllium-copper alloy springs have a good surface and strong adhesion, and show a high corrosion resistance. The tensile strength, hardness, and spring limit of that alloy spring are slightly lower than the respective value of unclad beryllium-copper alloy springs, but the fatigue strength of the clad spring is not affected by solder clothing.
(2) Heat of about 300°C can not separate solder from the base metal of the clad alloy spring. Both clad alloy springs and unclad alloy ones show their respective maximum mechanical strength at about 310°C.