Data Sheet F1 - CuZn20Al2

(1970 Edition)

Wrought Materials - Special Copper-Zinc Alloys - Special Brasses

Common names: Aluminium Brass

A copper-zinc alloy with an alpha phase structure, containing aluminium and a small amount of arsenic which is added as an inhibitor against dezincification. The presence of aluminium imparts to the alloy very good corrosion and erosion resistance in clean and slightly polluted waters, including seawater, either stagnant or relatively fast moving (up to about 3 m/s). The most commonly used wrought form is condenser and heat exchanger tube.

COMPOSITION (weight %)  
Cu 76.0 - 79.0
Al 1.8 - 2.5
As 0.02 - 0.06
Zn rem.

1. Some Typical Uses

2. Physical Properties

3. Fabrication Properties

4. National Specifications for Manufactured Forms

5. Mechanical Properties

6. References

INDEX NUMBERS RELATE TO LITERATURE REFERENCE; INDEX LETTERS RELATE TO FOOTNOTES AT END OF TABLE

 

1. Some Typical Uses

Chemical

Evaporator, distillation and heat-exchange equipment, including desalination plant and sugar refineries.

Marine

Tubes, fittings and other components for seawater condensers; seawater trunking; oil tanker heating coils.