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Quality Requirements Edition 6.0                                                                                  European Enamel Association




            7.1.3 Quality requirements


             Test method                 Requirement                                        Remarks                           Frequency

             4.2 material thickness      burner lid and grates made of cast iron min. 3 mm                                    determination during design
                                         troughs, baking trays and external parts min. 0,70 mm
                                         switch panels min. 0,60 mm
                                         baking ovens min. 0,50 mm
             4.3 thickness enamel        coating cast iron burner caps and pan supports max.0.60mm                            S4/AQL 6.5
                                         other applications max. 0.40 mm

             4.4 cold citric acid        min. class A +                                                                       when taking into production a sig.diff.
                                                                                                                              enamel recipe, but at least 1x a year
             4.9 impact resistance       at 20 N no damage > 2 mm in diameter after 24 hours                                  when taking into production a sig.diff.
                                                                                                                              enamel recipe, but at least 1x a year
             4.10 adherence              min. 3; for thick material min. “good”             possibly done on test sheets (see 4.1)   in production 1 x a day
                                         according to EEA 8.6.3
             4.17 determination of gloss   max. allowed difference at a measuring angle of 60 is:   for burner caps, hobs,    when taking into production a sig.diff.
                                         + 4 at gloss 0 - 30                                control panels and outside panels   enamel recipe, but at least 1x a year
                                         + 6 at gloss 30 - 70
                                         + 8 at gloss 70 - 100
             4.19 colour difference      even and smooth surface, evaluated equal to the appearance  colour difference possibly measured with  in production 100%
                                         of an approved enamelled sample                    a spectrometer and tolerances
                                                                                            previously agreed by interested partners
             4.21 resistance to heat     burner caps and pan supports: 400 °C during 3 hours                                  when taking into production a sig.diff.
                                                                                                                              enamel recipe, but at least 1x a year
             4.28 steel quality          in accordance with norm EN 10209                                                     determination during design
             4.39 adherence              for cast iron: min. good                           possibly done on test sheets (see 4.1)   in production 1 x a day
             4.40 thermal shock resistance   burner caps and pan supports: 380 °C (5x)      for pan supports, only applicable   in production 1 x a day
                                         hobs: 200 °C (5x)                                  for the fingertips
                                         baking platies: 260 °C (5x)










            © EEA2025                                                                                                                                 page 27
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