C89831 is a lead free Copper Bismuth Alloys and used as lead free substitute of C84400 alloy. In this alloy, Bismuth is used as the substitute of Lead. The benefits are Good machinability, better castability, good polishing and plating characteristics, superior microstructural characteristics, improved finish etc. Today this alloy is used by many plumbing, valve and pipe fitting manufacturers.
| Copper Alloys | Cu | Sn | Pb | Zn | Fe | Ni | P | Al | Mn | Si | Sb | S | Bi |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C89831 | 87-91 | 2.7-3.7 | 0.1 | 2-4 | 0.3 | 1 | 0.05 | 0.005 | - | 0.005 | 0.25 | 0.08 | 2.7-3.7 |