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AIRCRAFT QUALITY STEEL CLEANLINESS Magnetic Particle Inspection Procedure

1978-07-01
HISTORICAL
AMS2301F
This specification covers steel cleanliness requirements for aircraft-quality ferromagnetic steels, other than hardenable corrosion-resistant steels, by magnetic particle inspection methods. Applicable primarily to blooms, billets, tube rounds, stock for forging or flash welded rings, slabs, bars, sheet, strip, plate, tubing, and extrusions used in fabricating parts subject to magnetic particle inspection, but may be used for qualification of a heat, melt, or lot of steel.
Standard

AIRCRAFT QUALITY STEEL CLEANLINESS Magnetic Particle Inspection Procedure

1974-12-01
HISTORICAL
AMS2301E
This specification covers steel cleanliness requirements for aircraft-quality ferromagnetic steels, other than hardenable corrosion-resistant steels, by magnetic particle inspection methods. Applicable primarily to blooms, billets, extrusions, tube rounds, heavy wall tubing, stock for forging and rings, tubing, bars, slab, and plate used in fabricating parts subject to magnetic particle inspection, but may be used for qualification of a heat, melt, or lot of steel.
Standard

CHORD METHOD OF EVALUATING SURFACE MICROSTRUCTURAL CHARACTERISTICS

1984-10-01
HISTORICAL
ARP1820
This practice provides a method of evaluating microhardness and microstructure very close to the surface. It is useful for process control in heat treatment of steel parts to detect nitriding and carburization as well as decarburization and excessive intergranular oxidation. It also may be valuable for other evaluations, e.g., plated coatings and other materials.
Standard

Chord Method of Evaluating Surface Microstructural Characteristics

2012-04-05
HISTORICAL
ARP1820B
This practice provides a method of evaluating microhardness and microstructure very close to the surface of a disk specimen. It is useful for process control in heat treatment of steel parts to detect nitriding and carburization as well as decarburization and excessive intergranular oxidation. It also may be valuable for other evaluations, e.g., plated coatings and other materials.
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