Page 94 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.27.3 Quality requirements

Test method Requirement Remarks Frequency
4.2 material thickness min 0.75 mm is not valid for laminated panels determination during design
4.3 thickness enamel coating max. 0.50 mm not applicable if covered with several colour layers S4/AQL 6.5
in order to achieve special (when coil production, 1 x per 100 m )
2
decorative effects
4.4 cold citric acid class A when taking into production a sig.diff.
enamel recipe, but at least 1 x per year
4.5 boiling citric acid max. weight loss: 18.5 g/m per 2,5 hours only for outdoor application when taking into production a sig.diff.
2
enamel recipe, but at least 1 x per year
4.9 impact resistance at 20 N no damage when taking into production a sig.diff.
> 2.0 mm diameter after 24 hours enamel recipe, but at least 1 x a year
4.10 adherence min. 2 on test sheets conform to EN ISO 28764 in production 1 x a day

2
4.12 porosity max. 10 defects per m in production min. 1 %
or: only for outdoor application
4.13 determination of defects max. 10 defects per m 2 in accordance with EN ISO 8289 method B in production min. 1 %
or max. 5 defects per m in accordance with EN ISO 8289 method A in production min. 1 %
2
4.18 scratch resistance min. 4 N when taking into production a sig.diff.
enamel recipe (excluding colour
oxides), but at least 1 x a year
4.19 colour difference even and smooth surface, evaluated equal to the Colour difference possibly measured with a In production 100%
appearance of an approved enamelled sample spectrometer and tolerances previously agreed by
interested partners

4.26 abrasion resistance max. 0.1 gram in accordance with ASTM C501 when taking into production a sig.diff.
sandpaper S33/1kg/1000 rotations enamel recipe (excluding colour
oxides), but at least 1 x a year
4.28 Steel quality in accordance with norm EN 10209 is recommended: determination during design
DC01EK / DC04EK / DC04ED

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