Identify the requirements of strength, weight, stiffness, hardness, lubrication and endurance strength of the part to be designed.
Study and analyse the data available on materials.
Select the proper material for the job.
The selection of a material for a machine part or a structural member is the most important job for a designer before the final dimensions of the designed part are decided. The functions to be carried out by a machine member and the requirements of the part in terms of properties of the materials are decided well in advance by the designer. The technical properties of material can be classified into three main categories.
Physical properties, such as ...