Different materials possess different properties in varying degrees and therefore behave in different
ways under given conditions. These properties include Mechanical properties, Electrical properties,
Thermal properties, Chemical properties, Magnetic properties, and Physical properties.
A design engineer is interested in the behavior of materials under load which is mechanical in
nature, for the design of machines & structures. Any material subjected to a load either deforms,
yields, or break, depending upon the magnitude of the load.