What are the four categories of engineering materials used in manufacturing \( \square \)

The four categories of engineering materials used in manufacturing are: 1. **Metals**: These materials are known for their strength, ductility, and conductivity. Common examples include steel, aluminum, and copper. 2. **Polymers**: These are organic compounds made up of long chains of molecules. They are typically lightweight, resistant to corrosion, and can be flexible or rigid. Examples include plastics like polyethylene and nylon. 3. **Ceramics**: These materials are inorganic and non-metallic, known for their hardness, thermal stability, and resistance to wear and corrosion. Common examples include porcelain, glass, and brick. 4. **Composites**: These materials are made from two or more constituent materials with significantly different physical or chemical properties. The resulting composite material has characteristics that are different from the individual components. Examples include fiberglass and carbon fiber reinforced polymers. These categories encompass a wide range of materials used in various manufacturing processes and applications.