SAE Standards Works
AMS B Finishes Processes and Fluids Committee
AMS2489A - Blackening of Steel, Touch Up Method
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Blackening of Steel, Touch Up Method
This specification covers the requirements for an inorganic black coating applied at ambient temperature to steel to touch up black oxide coating in areas where the black oxide has been removed. This coating is intended only to visually change the surface to a black color, not to meet the requirements of any black oxide specification.
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