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NPFC - MIL-STD-867

TEMPER ETCH INSPECTION

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Organization: NPFC
Publication Date: 23 March 1979
Status: inactive
Page Count: 16
scope:

This standard establishes requirements and tests for performing temper etch inspection of carburized steels and tool and low alloy steels which are heat treated above 1.24 × 109 Pascal (PA) [1.26 × 102 kilogram-force/square millimeter (Kgf/mm2) 1.8 × 105 pound-force/square inch (psi)].

This standard applies to aircraft and missiles structural and propulsion system components when MIL-I-6870 and/or MIL-STD-866 are referenced as an item specification in the contract or order.

Temper etch inspection is typically performed on steels from the following groups:

Group A - Low alloy steels - SAE 52100, SAE 4140, SAE 4330, SAE 4340, 300M, D6AC, 440C, etc. Carburizing Steels - SAE 4620, 9310, AMS 6260, etc. Group B - Tool steels - H-11, M-50, M-2, H-13, etc.

This standard is not applicable to surface hardened steels produced by nitriding or carbonitriding.

This inspection is to be conducted to determine if heat has been induced in a component, subsequent to final heat treat, by machining, grinding, or other means which will adversely affect the required properties of that component.

To detect localized discontinuous carburization due to an inadvertent carburize stop-off and to determine the presence of or lack of total carburization in specified locations.

To detect a decarburized surface layer.

Document History

October 24, 2019
TEMPER ETCH INSPECTION
Scope. This standard establishes requirements for performing temper etch inspection of low alloy steels, carburized steels, and tool steels which are heat treated above 180 ksi (1241 MPa).
July 16, 2013
Temper Etch Inspection
A description is not available for this item.
November 25, 2008
TEMPER ETCH INSPECTION
This standard establishes requirements and test for performing temper etch inspection of carburized steels and tool and low alloy steels, which are heat treated above 1.24 x 109 Pascal (PA) (1.26 x...
July 17, 2008
TEMPER ETCH INSPECTION
This standard establishes requirements and test for performing temper etch inspection of carburized steels and tool and low alloy steels, which are heat treated above 1.24 x 109 Pascal (PA) (1.26 x...
March 1, 2007
TEMPER ETCH INSPECTION
This standard establishes requirements and test for performing temper etch inspection of carburized steels and tool and low alloy steels, which are heat treated above 1.24 x 109 Pascal (PA) (1.26 x...
December 9, 1996
TEMPER ETCH INSPECTION
A description is not available for this item.
MIL-STD-867
March 23, 1979
TEMPER ETCH INSPECTION
This standard establishes requirements and tests for performing temper etch inspection of carburized steels and tool and low alloy steels which are heat treated above 1.24 × 109 Pascal (PA) [1.26 ×...
November 21, 1969
TEMPER ETCH INSPECTION
A description is not available for this item.

References

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