ABSTRACT
A wide range of materials is used in engineering, and it is important to be aware of the ways in which these are applied and of the properties which make them suitable for these applications. The properties of materials can be divided into two groups: physical and mechanical. Coefficient of linear expansion, specific heat capacity, density, melting point, thermal conductivity, and electrical resistivity are some of the common examples of physical properties of engineering materials. Hardness, brittleness, tensile, compressive and shear strengths, ductility and malleability are classified as mechanical properties of materials. Non-destructive tests examine manufactured components and assemblies for internal flaws and faults and surface cracks and defects without destroying the component. The chapter also discusses the properties of several engineering materials such as plain-carbon steel, cast iron, copper and its alloys, aluminium and its alloys, and die-casting alloys, and thermoplastic materials. The need for corrosion protection through metallic coatings and paints are also described.
