PITTSBURGH — Alcoa is spending $60 million to expand the company’s three-dimensional manufacturing capabilities at its technical center in the Pittsburgh suburbs.

Alcoa announced the expansion at its Upper Burrell Township location today, along with the company’s new Ampliforge process.

The process enables Alcoa to design and 3D “print” a part comprised of several materials, which must then be forged as a complete entity.

Three-dimensional printing is part of the process known as additive manufacturing, in which three-dimensional products are designed on a computer then printed out of layered materials — for example, metals and plastics — into one product. The process is especially important in aerospace and transportation products.

Alcoa says the expansion will enable it to add about 100 jobs.