What is MIL-P-6888 used for in corrosion removal?

• A. Primer for aircraft surfaces
• B. Sealant for joints
• C. Paint color standard
• D. Metal polish used to remove corrosion on clad aluminum

Answer: (D)

MIL-P-6888 specifies a metal polish used to remove corrosion from clad aluminum surfaces. This standard focuses on cleaning and eliminating corrosion products rather than applying coatings, sealing joints, or defining color standards. The idea is to remove oxides and corrosion without damaging the underlying metal or the clad layer, often as a preparatory step before further surface treatment or coating. The other options describe primers, sealants, or color standards, which are not about removing corrosion. So the best fit is a metal polish used for corrosion removal on clad aluminum.