Page 37 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

7.6.3 Quality requirements

Test method Requirement Remarks Frequency
4.3 thickness enamel coating internal 0.20-0.50 mm in production S4/AQL 6.5
external max. 0.70 mm exclusive décor
4.4 cold citric acid internal min. class A when taking into production a sig.diff.

enamel recipe, but at least 2x a year
4.5 boiling citric acid internal weight loss:

max. 10 g/m per 2 1/2 hours on test sheets conform EN ISO 28764 when taking into production a sig.diff.
2
enamel recipe, but at least 2 x a year
2
4.6 boiling water internal weight loss: max. 5 g/m per 24 hours on test sheets conform EN ISO 28764 when taking into production a sig.diff.
test duration 48 hours enamel recipe, but at least 2 x a year
2
water vapour internal weight loss: max. 10 g/m per 24 hours when taking into production a sig.diff.
enamel recipe, but at least 2 x a year
4.7 detergent solution in consultation but claim per 24 hours on test sheets conform EN ISO 28764, when taking into production a sig.diff.

test duration 24 hours enamel recipe, but at least 2 x a year
4.8 release of toxic elements conform requirements national laws when taking into production a sig.diff.
enamel recipe
4.9 impact resistance at 20 N no damages > 2 mm diameter after 24 hours daily min. 3 pans/casseroles/pots
4.11 thermal shock resistance 220 °C not applicable for lids daily min. 3 pans/casseroles/pots
4.39 adherence min. ”good” daily min. 3 pans/casseroles/pots

7.6.4 Remarks

Except from the quality requirements mentioned here above, also the requirements as mentioned in 4.23 need to be met.
For the testing frequency at 4.9, 4.10, 4.11 and 4.23 applies that these tests can be carried out on the same three pans/casseroles/pots, taking into
account that the tests are to be carried out in the sequence 4.23, 4.11, 4.9 and 4.10.

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