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Standard

INSTRUMENTAL METHODS OF DETERMINING SURFACE CLEANLINESS

1995-05-01
HISTORICAL
ARP4252
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

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

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

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

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

Oxygen, Liquid, Propellant Grade

1990-01-01
CURRENT
AMS3012A
This specification has been declared "CANCELLED" by the Aerospace Materials Division, SAE as of January 1990.
Standard

Aviation Fuel, Grade 108/130

1952-02-01
HISTORICAL
AMS3034
This specification has been declared "SUPERSEDED" by the Aerospace Materials Division, SAE.
Standard

Aviation Fuel, Grade 115/145

1992-01-01
CURRENT
AMS3036D
This specification has been declared "SUPERSEDED" by the Aerospace Materials Division, SAE.
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