Copper alloys
Overview
Copper and its alloys are not widely used because most have the following disadvantages —
- Relatively low quality factor Q (indicative of high loss)
- Low fatigue strength
- Low resistance to wear and cavitation
Mason's ultrasonic tests (figure 1) show that copper has a Q of approximately 1800 up to a strain of 1.0e-5 beyond which the Q decreases rapidly. The Q of brass is approximately 1900 up to a strain of 1.2e-4 beyond which the Q decreases rapidly. For comparison, Ti-6Al-4V has a Q of approximately 20000 for strains up to 3e-3.
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Good thermal conductivity - back driver?
Bell brass