We've heard that Apple has obtained an exclusive license to develop electronic components with the company's extremely durable alloy. We've even heard in the past that Apple may already be using the metal for the SIM removers packed in with the 3G and 3GS.
However, Apple has filed (April 6, 2010) a patent for a manufacturing process to develop a stainless steel that is more durable than the regular grade of stainless steel thanks to an additional nitrade layer:
A cost effective system, method and apparatus adapted to provide a nitride layer on stainless steel used for the manufacture of consumer electronic products. In addition to providing a durable, hard surface that is both scratch and impact resistant, the nitride layer allows for the natural surface color and texture of the underlying stainless steel to remain visible to the user. It is this natural surface color and texture of the stainless steel that adds to the aesthetically pleasing appearance of the consumer electronic product thereby enhancing the user's overall experience.
It's mentioned as something that can be used in consumer electronic products such as laptops, cellphones and media players.