Page 62 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.17.3 Quality requirements

Test method Requirement Remarks Frequency

4.3 thickness enamel coating max. 0.25 mm S4/AQL 6.5
2
(in coil production 1 x per 100 m )
4.4 cold citric acid class A when taking into production a sig.diff.

enamel recipe, but at least 1 x per year
4.9 impact resistance at 20 N no damages > 2.0 mm diameter after 24 hours when taking into production a sig.diff.

enamel recipe, but at least 1 x per year
4.10 adherence min. 3 on test sheets may be conform in production 1 x a day
to EN ISO 28764
4.17 gloss min. 35 measuring angle 60° S4/AQL 6.5
2
(in coil production 1 x per 100 m )
4.18 scratch resistance min. 7 N when taking into production a sig.diff.

min. 4 N for metallic finishes and silk-screened finishes enamel recipe, but at least 1 x per month
4.19 cleanability ΔE* < 0,5 after a thorough wet cleaning, the surface when taking into production a sig.diff.

contamination or colour fading under enamel recipe, but at least 1 x per year
influence of the marker pigment may not
exceed ΔE* = 0,5.
4.26 abrasion resistance max. 0.1 gram conform to ASTM C501 when taking into production a sig.diff.
sandpaper S33/1kg/1000 rotations enamel recipe (exclusive colour oxides),
ISO 6370-1, ISO 6370-2 but at least 1 x per year

4.28 steel quality in accordance with norm EN 10209 is recommended: determination during design

DC01EK / DC04EK / DC04ED

© EEA2020 page 62
EEA2020