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Standard

Instrumental Methods of Determining Surface Cleanliness

2017-01-04
HISTORICAL
ARP4252A
This Aerospace Recommended Practice is intended as a guide toward standard practices for the determination of surface cleanliness that are applicable to field operation. Some of these methods can also be used to determine quality assurance that a surface has been properly prepared and maintained. The instrumental methods are: Wettability, Surface Potential Difference (SPD), Ellipsometry, and Optically Stimulated Electron Emission (OSEE). Each instrument is described with respect to measurement techniques, limitations, and advantages and types of available instruments. Elementary theoretical principles and examples of the use of each instrument are also given.
Standard

Rotary Flap Peening of Metal Parts

2016-11-15
HISTORICAL
AMS2590A
This specification covers procedures and requirements for peening of metal parts with portable, bonded-shot, rotary flap assemblies in accordance with AS2592. The principles of rotary flap peening are similar to conventional shot peening, except conversion of arc height values using the magnetic Almen test strip holder is required for intensity determination.
Standard

Treatment of Sheet Metal Parts Corrosion-Resistant Steel

2014-07-31
HISTORICAL
AMS2550E
This specification covers the engineering requirements for a treatment to provide enhanced corrosion resistance to sheet metal parts, such as brackets, spacers, and washers, fabricated from martensitic Corrosion-resistant steels, usually AMS 5504 or AMS 5508 and having hardness not higher than 40 HRC, or ferritic corrosion-resistant steels, usually AMS 5506. The treatment is not recommended for use on parts subject to impact in service.
Standard

Alcohol, Methyl

2014-03-24
CURRENT
AMS3004H
This specification covers methyl alcohol in the form of a liquid.
Standard

Alcohol-Water Mixtures

2013-12-05
CURRENT
AMS3006H
This specification covers mixtures of methyl alcohol and/or ethyl alcohol with water in the form of liquids.
Standard

Flux, Aluminum Welding

2013-07-18
HISTORICAL
AMS3414E
This specification covers an aluminum welding flux in the form of powder.
Standard

Molybdenum Disulfide, Technical, Lubrication Grade

2011-11-21
HISTORICAL
AMSM7866A
This specification covers the requirements for procurement of one grade of powdered molybendum disulfide to be used in lubricants and greases for surfaces where boundary conditions exist.
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