Data Sheet F2 - Cu Zn28 Sn1
(1970 Edition)
Wrought Materials - Special Copper-Zinc Alloys - Special Brasses
Common names: Admiralty Brass
Inhibited Admiralty
A copper-zinc alloy with an alpha phase structure, containing tin and a small amount of arsenic which is added as an inhibitor against dezincification. The presence of tin imparts to the alloy good corrosion resistance in moderately polluted river water and clean seawater, either stagnant or slow moving (up to about 2 m/s). The most commonly used wrought forms are tube and plate for heat-exchange equipment.
| COMPOSITION (weight %) | |
| Cu | 70.0 - 73.0 |
| Sn | 0.9 - 1.3 |
| As | 0.02 - 0.06 |
| Zn | rem. |
* Arsenic is the preferred inhibitor, but antimony or phosphorus is sometimes used in the USA
INDEX NUMBERS RELATE TO LITERATURE REFERENCE; INDEX LETTERS RELATE TO FOOTNOTES AT END OF TABLE
Chemical and Mechanical
Condenser tubes, tubeplates and other heat-exchange components, principally for oil refineries and power stations.