modulus of elasticity refers to the metal's tensile strength, specifically its highest stress/strain it can withstand before plastic deformation begins to occur. Actually, I was wrong in saying that aluminum has a higher E than copper, but I was thinking in terms of the ratio E/density, which i should have said - copper is roughly 3 times as dense as aluminum. In my opinion, the ratios of E/density and thermal conductivity/density make aluminum more ideal as the metal to use for the pins.
|