190 1.Introduction of material science (1)Materials Science Materials science is the study of the relationship occurring between forming, structure,properties and performances of the materials. Properties are the way in which the material behaves when external stresses are applied.(1) Materials Science Materials science is the study of the relationship occurring between forming, structure, properties and performances of the materials. Properties are the way in which the material behaves when external stresses are applied. 1. Introduction of material science