ISO 28764:2008 specifies a method for the production of specimens suitable for testing vitreous and porcelain enamel coatings.It specifies two different specimens:specimens taken from production articles;specially produced specimens.
DS/EN ISO 28764:2011 history
2011DS/EN ISO 28764:2011 Vitreous and porcelain enamels - Production of specimens for testing enamels on sheet steel, sheet aluminium and cast iron