Posted in Metal Working Principles & Procedures

Properties of Materials

The physical properties of a metal or a plastic determine its behavior under stress, heat, and exposure to chemically active substances. In practical application, behavior of a material under these conditions determines its mechanical properties, indentation, and rusting. The mechanical properties of a material. therefore, are important considerations in selecting material for a specific job. The following information concerns metals. Plastics are discussed later in this chapter. Stress is the amount of internal force with which a material resists a change in shape. Strain is the deformation or change in shape that is caused by an applied load. Strength is…