The A-A56032 item description covers a catalyzed epoxy base system of marking inks for metallic or other non-porous surfaces and printed wiring boards.
This specification covers a catalyzed epoxy system of marking inks for metallic, or other non-porous surfaces, and printed wiring boards. This specification is canceled. Superseded by A-A-56032.
This TT-I-558 specification covers one type and one grade of stencil ink for marking nonporous surfaces. This specification is canceled. Use TT-I-1795.