Aluminium

Aluminium, known as aluminum in Canada and the United States, is a lightweight lic ( 13 on the ) that is often used in s for products designed by Apple Inc. It can be easily bent and dented, but is strong and lightweight in comparison to many other common metals. It is the most abundant metal on the earth's surface and is easily recycled, making it fairly inexpensive. Exposed aluminum will slowly into a durable protective surface that prevents continued corrosion.

Usage at Apple
Released in 1980, the Apple III was the first model from Apple to use an aluminium chassis, but mainly to function as a as it had been designed without a cooling fan at Steve Jobs' insistence. The 20th Anniversary Macintosh was released in 1997 with an aluminium pedestal that was designed by Jonathan Ive as a single die-case part that could be folded up for use as a handle.



The first Mac to be entirely encased in aluminium is the PowerBook G4 in January 2003, replacing the troubled verson which was strong, but brittle. Apple has since moved to unibody construction for its entire Mac product line, with exterior cases — complete with internal reinforcement structures — being machined from a single piece of aluminium. The first Mac to use this construction method was the MacBook Air in January 2008, followed by the MacBook Pro in January 2009 and the iMac in October 2009. In 2012, Apple adopted to enable thinner aluminium construction of the iMac.

Aluminium has also been used in the iPad, iPhone, and Apple Watch product lines. To further strengthen the iPhone 6 S, Apple used a for its case material. Apple also applied for a patent for this process using copper to create an aircraft-grade alloy with high yield strength.

Recycling
In October 2018, Apple announced that it had been using "100% recycled aluminium" in its products. Apple filed a patent for inventing a process of recycling scrap aluminium into "with cosmetic appeal".

In popular culture
The pronunciation of aluminium by Sir Jonathan Ive in his native has garnered dedicated fans, as well as memes.