I found more info on the toughbook...
Hmmm it seems like using magnesium would be better to use.
Magnesium, while light and readily available, is also rigid, conducts well, shields electromagnetic waves, and is recyclable. Add to that the high tensile strength and elasticity and it's clear why magnesium has become a desirable material. It's beautiful to look at and very tough.
Hmmm it seems like using magnesium would be better to use.