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Standard

Etch Inspection of High Strength Steel Parts

2008-01-03
HISTORICAL
AMS2649C
This specification establishes the requirements for etch inspection of bare high-strength low-alloy steel parts having tensile strength of 180 ksi (1241 MPa) and higher and of carburized parts to detect overheating caused by abusive machining or grinding in the heat treated condition, and to detect localized discontinuous carburization. This process is not applicable to surface hardened steels produced by nitriding or carbonitriding. This process may remove 0.0001 to 0.0005 inch (2.5 to 12.7 micrometers) from the surface of the part.
Standard

Etch Inspection of High Strength Steel Parts

2019-07-15
CURRENT
AMS2649D
This specification establishes the requirements for etch inspection of steel parts to detect overheating (rehardening or overtempering) caused by abusive machining or grinding, or to detect localized discontinuous carburization.
Standard

ETCH INSPECTION OF HIGH STRENGTH STEEL PARTS

1996-06-01
HISTORICAL
AMS2649A
This specification establishes the requirements for etch inspection of bare high-strength low-alloy steel parts having tensile strength of 180 ksi (1241 MPa) and higher and of carburized parts to detect overheating caused by abusive machining or grinding in the heat treated condition. This process may remove 0.0001 to 0.0005 inch (2.5 to 12.7 μm) from the surface of the part.
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