Talk:Ruby/@comment-195971-20160326190503

The description is wrong.. it's not used for fire and heat protection, rather it has excellent heat conductivity properties. It's used in heat SINKS.. not heat insulation... It is true, however, that it can be used to create aerogel, which DOES have excellent insulation properties. Although due to the aluminium's heat conductivity, silica aerogel is preferred because it's a natural heat insulator rather then a conductor.

So I'd expect aluminium oxide to be used for reactors and advanced cpu's, rather then thermal insulation...