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Rotary Flap Peening of Metal Parts

2019-08-26
WIP
AMS2590C
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

Petroleum Base Instrument Bearing Lubricant, Viscosity 15

2019-03-25
WIP
AMS3055C
This specification covers the requirements for a refined paraffinic petroleum-base lubricant. This lubricant has been used typically in spin axis bearings of gyroscopes, accelerometers, and similar bearing applications, but usage is not limited to such applications.
Standard

Gaseous Nitrocarburizing

2019-03-15
CURRENT
AMS2757C
This specification covers the engineering requirements for producing a continuous thin epsilon-iron-carbonitride compound layer on parts by means of a gaseous, low temperature process, and properties of the case.
Standard

Rotary Flap Peening of Metal Parts

2019-01-04
CURRENT
AMS2590B
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

Automated Gaseous Nitrocarburizing Controlled by Potentials

2018-07-02
CURRENT
AMS2759/12B
This specification covers the requirements for producing a continuous white layer with controlled extent of porosity by means of a gaseous process, automatically controlled to maintain set values of the nitriding and carburizing potentials that determine properties of the nitrocarburized surface. Automatic control is intended to ensure repeatability of nitrogen and carbon content of the white layer which influences properties such as wear and corrosion resistance, ductility and fatigue strength.
Standard

Gaseous Nitrocarburizing

2018-06-11
CURRENT
AMS2759/13
This specification covers the engineering requirements for producing a continuous thin epsilon-iron-carbonitride compound layer on parts by means of a gaseous, low temperature carbon enriched nitriding process. The process is intended to utilize an atmosphere of high nitriding potential that produces a compound layer. If the compound layer is intended to be controlled automatically, AMS2759/12 shall be used.
Standard

Plating, Silver, Copper Strike, Low Bake

2018-03-27
WIP
AMS2412L
This specification covers the requirements for silver deposited on metal parts with a copper strike between the basis metal and the silver deposit.
Standard

Plating, Brush, Cobalt

2017-11-20
CURRENT
AMS2451/11B
This specification covers the requirements for brush plating of cobalt by electrodeposition.
Standard

Plating, Brush, Tin

2017-11-09
CURRENT
AMS2451/12A
This specification covers the engineering requirements and process for brush plating of tin by electrodeposition. It shall be used, in conjunction with AMS2451, for general purpose tin deposits.
Standard

Plating, Brush, Silver

2017-11-09
CURRENT
AMS2451/13A
This specification covers the engineering requirements and process for brush plating of silver by electrodeposition. It shall be used, in conjunction with AMS2451, for silver deposits.
Standard

Molybdenum Disulfide, Technical, Lubrication Grade

2017-09-22
CURRENT
AMSM7866B
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.
Standard

Instrumental Methods of Determining Surface Cleanliness

2017-09-20
CURRENT
ARP4252B
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

Treatment of Sheet Metal Parts Corrosion-Resistant Steel

2017-09-20
CURRENT
AMS2550F
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.
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