Page 52 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.13.3 Quality requirements

Test method Requirement Remarks Frequency
4.2 material thickness min. 0.75 mm, not valid for laminated panels determination during design
4.3 thickness enamel coating max. 0.40 mm not applicable if covered with several S4/AQL 6.5
2
colour layers in order to achieve special (when coil production,1 x per 100 m )
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
2
4.5 boiling citric acid max. weight loss: 18.5 g/m per 2.5 hours when taking into production a sig.diff.

enamel recipe, but at least 1 x a 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 may be conform to in production 1 x a day
EN ISO 28764
2
4.12 porosity max. 10 defects per m in production min. 1 %

or:
2 in accordance with EN ISO 8289 method B in production min. 1 %
4.13 determination of defects max. 10 defects per m
2 in accordance with EN ISO 8289 method A in production min. 1 %
or max. 5 defects per m
4.18 scratch resistance min. 7 N when taking into production a sig.diff.
min. 4 N for metallic finishes and enamel recipe (exclusive colour oxides),
silk-screened finishes but at least 1 x a year
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 (exclusive colour oxides)
ISO 6370-1 and ISO 6370-2 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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