| Year | Detail |
| 1930s-1950s |
|
| 1931 |
Brush Beryllium Co. was incorporated. |
| 1941-45 |
During World War II, Brush Beryllium Co. supplied more than half of the country’s copper beryllium requirements. |
| 1956 |
The company went to public stock offerings. |
| 1960s-1980s |
|
| 1969 |
The company develops bertrandite ore deposits in Utah by constructing a new ore mine. |
| 1990s-2010s |
|
| 1990 |
Brush Wellman acquired Electrofusion Corp. |
| 1998 |
Williams Advanced Materials acquired PureTech Inc. |
| 2000-2004 |
The company has established additional distribution, service, and sales organizations in Asia. |
| 2005 |
Williams acquires OMC Scientific Holdings and Thin Film Technology. |
| 2011 |
Materion acquired Shanghai-based EIS Optics. |
| 2012 |
Materion acquired Aerospace Metal Composites Limited (AMC). |
| 2020s-Today |
|
| 2020 |
Materion acquired Optics Balzers. |
| 2021 |
Materion acquired the Electronic Materials business of H.C. Starck Solutions. |