To solve the problem of choice of materials, experience is essential and irreplaceable ie material to be good may have been used by someone previously. Following the experience is the safest, although not always lead to more economical solution.
In short, you can indicate the following procedure for selection of materials:
- Knowledge of materials available in practice and their physical limitations and manufacturing.
- Select the most appropriate group for the case with a view to working conditions, corrosion, etc. voltage level.
- Compare the various materials selected economically, taking into account all cost factors.
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