I have an aluminum gear from an old instrument that has worn down. I would like to reverse engineer a new gear using a higher strength material, however, I have a concern about the mass moment of inertia of the new gear. If I use steel, the mass will triple and I don't think the motor can handle it. What is a common material that gear manufacturers use that weighs about the same as aluminum with the strength of moly-steel? Beryllium is out due to the hazards. Is titanium realistic?
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