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1.1 ,This specification establishes requirements for copper-nickel-tin alloy strip in the following alloys:
| Copper Alloy UNS No. | Nominal Composition Weight ,% | ||
| Copper | Nickel | Tin | |
| C72700 | 85 | ,9 | 6 |
| C72900 | 77 | 15 | 8 |
| C72650 | 87.5 | ,7.5 | 5 |