1.1 ,This specification establishes the requirements for copper-beryllium alloy plate, sheet, strip, and rolled bar. The following alloys are specified:2
| Copper Alloy | Previously Used Commercial | Nominal Beryllium |
| UNS No.2 | Designations | Content, % |
| C17000 | Alloy 165 | 1.7 |
| C17200 | Alloy , 25 | 1.9 |