Structural Examination of Titanium Alloys Etch-Anodize Inspection Procedure
AMS2642F
This specification covers a procedure, typically referred to as Blue Etch Anodize, for revealing the macrostructure and microstructure of selected titanium alloys.
Rationale:
AMS2642F results from a Five-Year Review and update of this specification adding Ordering Information, clarifying Purpose (1.1), allowing purer grades of acid to be used for Back Strip Solution (3.1.3), replaced Fixture/Electrical Contact Location (3.3.2) with standardized wording, clarified Etch-Anodize Macrostructure Procedure (3.3.4) by stating that the steps are to be performed sequentially and that specimens may be rinsed or immersed, moved test specimen from 4.1 to 3.3.4.6, added Macrostructure (3.4) requirement as it was required but not in properties, reworded Microstructure (3.5) for clarity, added that the Microstructure (3.5.3) shall conform to the material specification, moved hydrogen pickup from acceptance test (4.1) to periodic test (4.2), added NOTICE (8) regarding restricted or banned substances, and changed shall to should in 8.2.7.
Related Topics:
Metal finishing
Manufacturing processes
Chemicals
Titanium alloys
Heat treatment
Metallurgy
Finishing
Nanotechnology
Hazardous materials
Non-destructive tests
Also known as: SAE AMS 2642
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