| Year | Detail |
| 1888 |
Alcoa founder Charles Martin Hall established The Pittsburgh Reduction Company and opened a pilot production facility on Smallman Street in Pittsburgh. |
| 1895 |
The company entered the home cookware market with light, sturdy, no-rust aluminum teakettles. |
| 1916 |
The company launched its first aerospace alloy, 2017-T4, which was critical for building the historic USS Shenandoah rigid airship. 2017-T4 is still used for aircraft sheets and plates. |
| 1979 |
The company established Alcoa Recycling Company to support its goal of enhancing sustainability by increasing its recycling activity. |
| 1998 |
The company rebranded as Alcoa from The Aluminum Company of America to reflect its global status. |
| 2016 |
The company separates its mining/refining/smelting and power businesses (retaining the name "Alcoa") from its fabrication businesses, which became known as "Arconic." |
| 2018 |
Alcoa formed a joint venture known as ELYSIS to commercialize a revolutionary smelting technology that eliminates all greenhouse gas emissions and instead produces pure oxygen. |
| 2019 |
The company joined the International Council on Mining and Metals (ICMM), which focuses on enhancing the industry’s contribution to society with safe, fair, and sustainable practices. |
| 2024 |
Alcoa Foundation partnered with Aspen Medical Foundation to provide prosthetic limbs and specialized rehabilitation training in Ukraine. |
| 2024 |
The company acquired Alumina Limited and strengthened its position as a prominent producer of bauxite and alumina. |