Anodic Treatment of Aluminum Alloys, Chromic Acid Process

Standard:
Revised:
  • 2000-07-01
 
  • HISTORICAL Access the latest revision: AMS2470N
Publisher:
  • SAE International
Pages:
8
Scope:

This specification establishes the engineering requirements for producing anodic coatings on aluminum alloys and the properties of such coatings.

This process has been used typically to increase corrosion resistance and provide surfaces which will promote adherence of paint and other organic finishes, and has been found useful for assemblies which have faying surfaces and/or which may trap electrolyte, but usage is not limited to such applications.

This process is primarily applicable to aluminum and aluminum alloy parts which have nominal copper content not greater than 5% by weight or total nominal alloy content not greater than 7.5% by weight, AMS 2471 being recommended for parts having higher alloy content. Coating may be dyed if specified, but AMS 2472 is recommended where a colored finish is required.

History:
Standard Published Revision Status
AMS2470N 2013-07-08 Latest Revised
2011-08-10 Historical Reaffirmed
2007-04-13 Historical Revised
2000-07-01 Historical Revised
1999-04-01 Historical Revised
1995-11-01 Historical Revised
1974-12-01 Historical Revised
1966-09-01 Historical Revised
1962-06-01 Historical Revised
1959-01-01 Historical Revised
1947-07-01 Historical Revised
1946-11-01 Historical Revised
1942-03-01 Historical Revised
1940-01-01 Historical Issued
AKA:
  • SAE AMS 2470
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