Page 58 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.15.3 Quality requirements

Test method Requirement Remarks Frequency
4.3 thickness enamel coating max. 0.20 mm S4/AQL 6.5
2
(in coil production 1 x per 100 m )
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 conform to EN ISO 28764 in production 1 x a day

4.17 gloss degree 2-20 measuring angle 60° S4/AQL 6.5
2
(in coil production 1 x per 100 m )
4.26 abrasion resistance max. 0.1 gram conform to ASTM C 501 sandpaper when taking into production a sig.diff.
S33/1kg/1000 rotations EN ISO 6370-1 enamel recipe (excluding colour oxides),
and 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

7.15.4 Remark

The surface of the chalkboards must be suitable and easy to write on. Removal of writing should go smoothly with a dry felt eraser or a latex sponge.

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