This document provides an overview of traditional engineering materials, including metals, ceramics, and polymers. It defines each material type, describes their key properties and characteristics, and gives examples of common applications. Metals are highlighted as having high strength, ductility, impact resistance, and thermal and electrical conductivity. Ceramics are described as very strong in compression but brittle, with high hardness, thermal stability, and chemical resistance. Polymers are introduced as large molecular chains with low density, thermal and electrical insulation, and moderate strength and stability. Common uses of each material type are also listed.