| Alloy No. | Chemical Composition | |||
| Cu | Mn | Ni | Zn | |
| BZn18-18 | 62.0-66 | 0-0.5 | 16.5-19.5 | Remainder |
| BZn15-20 | 60.0-64 | 0-0.5 | 12.5-15.5 | Remainder |
| BZn18-26 | 54.0-58 | 0-0.5 | 16.5-19.5 | Remainder |
| Articles | Chemical composition | |||||
| GB | UNS | EN | JIS | Cu% | Ni% | Zn% |
| 18-18 | C75200 | CuNi18Zn20 | C7521 | 62-66 | 16.5-19.5 | Rem |