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Standard

Plating, Brush, Tin

2002-12-13
HISTORICAL
AMS2451/12
This specification covers the engineering requirements and process for brush plating of tin by electrodeposition. It shall be used, in conjunction with AMS 2451, for general-purpose tin deposits.
Standard

Selective (Brush) Nickel Plating Low-Stressed, Hard Deposit

2000-10-01
CURRENT
AMS2439A
This specification covers the engineering requirements for selective (brush) electrodeposition of nickel and the properties of the deposit. This process has been used typically to provide good wear resistance and dimensional build-up and restoration of parts which may operate in service up to 450 degrees F (232 degrees C), where low tensile stress in the deposit is required, but usage is not limited to such applications. Diffusion heat treatment of the deposit is not required.
Standard

Selective (Brush) Nickel Plating Low-Stressed, Low Hardness Deposit

2000-10-01
CURRENT
AMS2441A
This specification covers the engineering requirements for selective (brush) electrodeposition of nickel and the properties of the deposit. This process has been used typically to provide moderate corrosion and oxidation resistance and dimensional build-up and restoration of parts which may operate in service up to 700 degrees F (371 degrees C), where low tensile stress in the deposit is required to avoid marked reduction of fatigue strength, but usage is not limited to such applications.
Standard

Hard Anodic Coating Treatment of Aluminum Alloys

1976-01-15
HISTORICAL
AMS2468B
This specification establishes the engineering requirements for producing a hard coating on aluminum alloys and the properties of such coating. This coating has been used typically to increase, by the formation of a dense aluminum oxide, surface hardness and resistance to abrasion and corrosion of aluminum-alloy parts containing, in general, less than 6% copper or 8% silicon or a total of 8% of both, but usage is not limited to such applications. Alloys with higher silicon content alone can be coated satisfactorily with proper precautions in processing. Careful consideration should be given to the use of this process on highly-stressed parts because of the resultant marked lowering of fatigue performance and on parts with sharp corners and edges where chipping may result.
Standard

Hard Anodic Coating Treatment of Aluminum Alloys

1964-06-30
HISTORICAL
AMS2468A
This specification establishes the engineering requirements for producing a hard coating on aluminum alloys and the properties of such coating. This coating has been used typically to increase, by the formation of a dense aluminum oxide, surface hardness and resistance to abrasion and corrosion of aluminum-alloy parts containing, in general, less than 6% copper or 8% silicon or a total of 8% of both, but usage is not limited to such applications. Alloys with higher silicon content alone can be coated satisfactorily with proper precautions in processing. Careful consideration should be given to the use of this process on highly-stressed parts because of the resultant marked lowering of fatigue performance and on parts with sharp corners and edges where chipping may result.
Standard

Hard Anodic Coating Treatment of Aluminum Alloys

1957-01-15
HISTORICAL
AMS2468
This specification establishes the engineering requirements for producing a hard coating on aluminum alloys and the properties of such coating. This coating has been used typically to increase, by the formation of a dense aluminum oxide, surface hardness and resistance to abrasion and corrosion of aluminum-alloy parts containing, in general, less than 6% copper or 8% silicon or a total of 8% of both, but usage is not limited to such applications. Alloys with higher silicon content alone can be coated satisfactorily with proper precautions in processing. Careful consideration should be given to the use of this process on highly-stressed parts because of the resultant marked lowering of fatigue performance and on parts with sharp corners and edges where chipping may result.
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