Technician A says semi-metallic materials are made from a mixture of organic or synthetic fibers. Technician B says semi-metallic metals are softer and less fade resistant than organic materials. Who is correct?

Question

Quizplus · Accepted Answer

Semi-metallic materials are made from a mixture of metal particles and organic or synthetic fibers, so Technician A is correct. However, Technician B is incorrect in saying that semi-metallic materials are softer and less fade resistant than organic materials. In fact, semi-metallic materials are typically harder and more fade resistant, but they may produce more brake dust and noise.

Technician a Says Semi-Metallic Materials Are Made from a Mixture