Are there any regulations regarding the use of flame-retardant coatings on aluminum sheets?

Yes, there are regulations regarding the use of flame-retardant coatings on aluminum sheets. These regulations vary by country and application, but they generally aim to ensure safety and compliance with fire safety standards. In the United States, for example, the National Fire Protection Association (NFPA) provides guidelines, and building codes like the International Building Code (IBC) may specify requirements for flame retardancy. The European Union has its own set of standards, such as EN 13501, which classifies the reaction to fire performance of construction products. Compliance with these regulations is crucial to ensure that the aluminum sheets and their coatings meet the necessary safety standards and to avoid legal penalties.