Which metal is not used in the creation of babbitt?

Babbitt is an alloy commonly used for bearing materials, noted for its excellent properties such as good wear resistance and low friction characteristics. The primary components of traditional Babbitt alloys include tin, lead, copper, and sometimes aluminum.

While lead, tin, and copper are prevalent in the formulation of Babbitt, zinc is not a typical component. Including zinc in the Babbitt mix would alter its desirable properties, as zinc does not provide the same level of softness and ease of machining that lead or tin offers. Therefore, because zinc is not traditionally part of Babbitt alloys, it is identified as the metal not used in the creation of Babbitt. Thus, the answer highlights that zinc diverges from the metals most commonly associated with Babbitt manufacturing.