How long do compression springs last?

The effective life of a compression spring depends heavily on the operating environment. A spring designed for a static application with a properly chosen material should last indefinitely. In cyclic applications, springs are generally designed for infinite life; however, application nuances such as resonant vibration could drastically reduce spring life. If you stay within the maximum safe deflection listed for the compression springs, the spring will theoretically achieve at least 100,000 cycles.