Alcoa

Jim Bourg / AP

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Keith Srakocic / AP

Alcoa Corp. is moving its global headquarters back to Pittsburgh, where the 129-year-old company had been based until moving to New York City in 2006.

Alcoa has maintained offices in Pittsburgh and 10 employees will relocate from its New York headquarters when the move is made Sept. 1. Alcoa already has 205 employees in Pittsburgh who share a building with Arconic, a spinoff company created when Alcoa split off its mining, refining and aluminum businesses in November from businesses that make aluminum parts for aerospace, automotive and other industries.

A new type of aluminum could change the way cars are made, making them lighter stronger and greener.

Pittsburgh-based Alcoa’s Micromill® takes molten metal and turns it into an aluminum coil in 20 minutes; previously the process took 20 days. It creates a product unlike any seen before.