Page 29 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.2.3 Quality requirements

Test method Requirement Remarks Frequency
4.2 material thickness min. 0.90 mm determination during design
4.3 thickness enamel coating max. 0.50 mm S4/AQL 6.5
4.4 cold citric acid min. class A when taking into production a sig.diff

enamel recipe, but at least 1x a year
2
4.5 boiling citric acid max. 15 g/m per 2 1/2 hour when taking into production a sig.diff
enamel recipe, but at least 1x a year
2
4.7 detergent solution max. 20 g/m per 24 hours test duration 24 hours when taking into production a sig.diff.

resistance enamel recipe, but at least 1x a year
4.9 impact resistance at 20 N no damage > 2 mm on test sheets may be when taking into production a sig.diff.

diameter after 24 hours conform to EN ISO 28764 enamel recipe, but at least 1x a year
4.10 adherence min. 2 on test sheets may be in production 1 x a day
conform to EN ISO 28764
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)
but at least 1x a year
4.28 steel quality in accordance with norm EN 10209 is recommended: determination during design

DC04EK / DC05EK / DC06EK

© EEA2020 page 29
EEA2020