Why did Apple switch from titanium to aluminum in the high-end laptops? Titanium is about twice as strong as aluminum is is much more scratch resistant. I know they made the change forever ago, but I've alsways wondered why. Especially as notebooks get thinner and thinner, I would think they'd pursue stronger and stronger materials, rather than the other way around. Yes I know that aluminum is cheaper of course. But then why did they go titanium before?