Page 77 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

Quality requirements (cont.)

Test method Requirement Remarks Frequency
2
4.7 detergent solutions max. weight loss: 5,0 g/m after 24 hrs. EN ISO 28706-3/10 when taking into production a sig.diff.
except for roofs of thermophilic/pasteurisation digesters and on test sheets conform to EN ISO 28764 enamel recipe, but at least 1 x a year
industrial tanks with aeration processes: max. 2,5 g/m²
except for aggressive chemical industrial effluent / high
temperature applications: max. 2,0 g/m²
4.9 impact resistance at 40 N no damage > 2 mm ø after 24 hours EN ISO 4532 in production 1 x a month
except for aggressive chemical industrial effluent / high
temperature applications: tested at 50 N force no damage > 2
mm ø
4.10 adherence min. class 2 except for aggressive chemical industrial effluent / EN 10209 Annex C, on test sheets in production 1 x a month
high temperature applications: min. class 1 conform to EN ISO 28764

or 4.39 for thickness >3mm min. “good” EEA Specification 8.6.3, on test sheets in production 1 x a month
conform to EN ISO 28764
4.12 porosity For inside surface only: discontinuity free EN ISO 2746 Test A in production 100 % (every panel)
With test voltage 1.100V
Except for roofs of thermophilic/pasteurisation digesters and
Industrial tanks with aeration processes: 1.500V
Except for aggressive chemical industrial effluent and high
temperature applications: 2.000V
2
4.25 sodium hydroxide 80° C max. weight loss of 6 g/m after 24 hours except for aggressive EN ISO 28706-4/9 when taking into production a sig.diff.
chemical industrial effluent / high temperature applications: enamel recipe, but at least 1 x a year
max. weight loss of 5 g/m²
4.26 abrasion resistance <0,9 relative amount of wear conform to EN ISO 6370-1 and EN ISO when taking into production a sig.diff.
6370-2 enamel recipe (excluding colour
oxides), but at least 1 x per year
4.28 steel quality conforming EN 10111, EN 10025-1, EN 10149–1 and ASTM A quality to be agreed between the determination during design
1011 and others (including grades DD 11, S235, S420, S460, enameller and the steel manufacturer
S500, S550 and S700), with appropriate pre-treatments
4.33 corrosion rate in weight loss after 7 days in vapour phase is <=8g/m² EN ISO 28706-2/13 when taking into production a sig.diff.
hydrochloric acid vapor Except for aggressive chemical industrial effluent /high enamel recipe, but at least 1 x a year
temperature applications, Industrial tanks with aeration processes
and roofs of thermophilic/pasteurisation digesters where max.
weight loss is 7g/m²
4.40 thermal shock resistance no damage EN ISO 28763 Annex A when taking into production a sig.diff.
on test sheets conform to EN ISO 28764 enamel recipe, but at least 1 x a year

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