To wit, the engineers opted for 4130 chrome alloy steel, an aircraft-grade metal.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt

The i3's cabin will be made from just 35 carbon fibre parts, which simplifies the manufacturing a great deal when compared with similarly-sized conventional cars that would require some 500 alloy steel parts to achieve similar results.

BBC: Knitting and baking the cars of the future

The Executive represents a new distinctive, sophisticated design for the Beats By Dr. Dre brand that focuses on craftsmanship using premium materials such as aluminum alloy, stainless steel and leather.

ENGADGET: Beats By Dre launches Executive noise-cancelling headphones, keeps 'em dapper in aluminum for $300 (ears-on)

In the materials group, Reliance Steel, one of the largest U.S. metals service centers, distributes a line of more than 100, 000 metal products, including carbon, alloy, stainless and specialty steel, aluminum, brass as well as copper products.

FORBES: Market's January Advance Bodes Well For Financial, Tech And Materials Stocks - And Obama

Some kind of organic metallic alloy stronger than titanium or carbon steel, harder than diamonds.

NPR: Summary Judgment: 'Fantastic Four,' 'Dark Water'

The Treasury plans to make the new coins from nickel-plated steel instead of the alloy, which has become more expensive as the price of copper has risen in recent years.

BBC: Treasury 'should foot coin change bill'

The alloy mount is lighter and more durable than a steel one, but it can't be repaired if seriously bent.

FORBES: The Disposable Car

They are toughened with diamond-like carbon from the semiconductor industry and this is bonded on to the steel with niobium, a rare tin alloy normally used in superconducting magnets.

ECONOMIST: Skinned alive

Aluminum, being less dense than steel, has greater sound radiation, and yet the alloy-bodied SL summons a lush, refined quiet in the cabin to rival a fixed-roof car.

WSJ: 2013 Mercedes-Benz SL550 Review: The Beauty Is All on the Inside | Rumble Seat by Dan Neil