select a suitable material for the rod from the table below?

A cylindrical rod of 380mm long and 10mm in diameter is subjected to a tensile load of 25kN. If the rod is to allow neither plastic deformation nor an elongation of more than 0.9 mm, select a suitable material for the rod from the table below. Justify your choice(s) with full calculations and explanations.

Material:Young’s modulus(GNm-2) ,Yield Strength (MNm-2) ,Tensile strength (MNm-2) Aluminium : 70 255 420
Brass alloy: 100 345 420
Copper : 115 250 290
Steel alloy : 207 450 550

Gary2010-11-19T18:25:27Z

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P.S. I used invisible ink to solve this rather easy problem. If you can figure out how i used invisible ink in electronic format I'll post the answers and work using normal means.

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