7178 aluminium alloy

7178 aluminum alloy is wrought alloy. It has high zinc content. After annealing, aluminum alloy 7178 has high machinability. Resistance welding can be used.

Chemical composition
The chemical composition of Aluminium / Aluminum 7178 alloy is outlined in the following table. It is difficult to cold work. Forming is hard to use for this alloy. It has high machinability.

Designations
Aluminium alloy 7178 alloy can be designated as:


 * 1) ASTM B209
 * 2) ASTM B221
 * 3) ASTM B241
 * 4) ASTM B316
 * 5) QQ A-200/13
 * 6) QQ A-200/14
 * 7) QQ A-250/14
 * 8) QQ A-250/21
 * 9) QQ A-250/28
 * 10) QQ A-430
 * 11) SAE J454

Applications

 * 1) Aircraft components
 * 2) Petroleum refineries
 * 3) Boilers
 * 4) Heat exchangers
 * 5) Condensers
 * 6) Pipelines
 * 7) Cooling towers
 * 8) Steam exhausts
 * 9) Electric generation plants