Copper alloys include Brass (copper / zinc) and Bronze (copper / tin).

Source:           Bearings, Bushings, Oil Coolers, Radiators,
                      Slinger Rings, Screw Compressors, Bearing
                      Retainers, Clutch Plates, Thrust Washer,
                      Transmission Discs, Rocker Arm Bushings,
                      Wrist Pin Bushings and as Anti-corrosion
                      additive package.

 Function:        Copper is utilized to wear first in order to protect
                      other components.  Copper conforms well so it is
                      used to seat bearings to the crankshaft

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