Ex4.

Links
1.https://www.asminternational.org/documents/10192/1849770/ACF1808.pdf

2.(Third edition)
https://www.academia.edu/30576917/Materials_Selection_in_Mechanical_Design_3rd_Edition_-_By_Michael_F._Ashby_
2.1(second edition)
http://www.utc.fr/~hagegebe/UV/MQ12/CORRECTIONS_TD/%5BASHBY99%5D%20-%20Materials%20Selection%20In%20Mechanical%20Design%202Ed.pdf