I'll give you an example, stealing this from Apple marketing quoted by Reggie:

"All the breakthrough technology in iPhone 4 is situated between two glossy panels of aluminosilicate glass — the same type of glass used in the windshields of helicopters and high-speed trains. Chemically strengthened to be 20 times stiffer and 30 times harder than plastic, the glass is ultradurable and more scratch resistant than ever. It’s also recyclable."

"All the revolutionary open Meego systems are mounted on a custom designed frame, protected by a specially developed aluminium alloy. This alloy presents a marked improvement in mechanical properties compared to other materials available in the market; and similar alloys are used in the aerospace industry for for critical, high performance components in aircraft and rockets. Also, in the best interest of ecology, the base components of the alloy are made from 100% recycled metals."

It could be shorter I guess, but you get my point.