Beryllium Copper Strip

Performance of Beryllium Copper

(4) Fatigue Strength

Fatigue strength is important to assure the reliability of contact springs in micro switches or relays for which cyclic motions are required. Fig. 6 shows the fatigue strength of various copper alloys.

Fig. 6 Fatigue Strength Beryllium Copper vs, Phosphor BronzeFig. 6 Fatigue Strength Beryllium Copper
vs. Phosphor Bronze

Beryllium Copper alloy 25 has higher fatigue strength than any other copper alloy, e.g. 8 times longer durability than phosphor bronze, while alloy 11 and 7 exhibit slightly higher fatigue strength than Phosphor Bronze.

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