Page 66 - 20250602 EEA QM Edition 6.0

Quality Requirements Edition 6.0 European Enamel Association

7.18.3 Quality requirements

A. Steel base
Certificate (3.1 according to EN 10204) to be provided by steel manufacturer, stating:
Test method Requirement Remarks Frequency
steel analysis according to norm suitable for double-sided enamelling per melt
4.16 /4.43 > = 120 does not apply for steel types DC06EK per coil
hydrogen permeability / DC06ED and DC07EK
or 4.22/4.43 fish scale test no fish scales allowed per coil
4.27 pickling speed if required in consultation with the steel manufacturer per coil
and the enameller

B. Enamel frits
The enameller has to use checked enamel frits for this object
The guarantee should be given by the frit manufacturer in a certificate
The requirements and the test recipes are determined in consultation between enameller and frit manufacturer
The results are given in a certificate according to EN 10204 3.1

Test method Requirement Remarks Frequency
4.6 resistance against boiling if required by the enameller per 10,000 kg
2
2
water and/or vapour air-gas: 20 g/m /48h; gas-gas: 6 g/m /48h
4.35 resistance against per 5,000 kg
boiling sulphuric acid air-gas: 10 g/m /48h; gas-gas: 2 g/m /48h
2
2
4.40 resistance against if required in consultation with the frit manufacturer and the per 10,000 kg
thermal shock enameller; 5 x 350 degrees C, according EN ISO 28763
annex A
4.44 fusion flow if required in consultation with the frit manufacturer and the per 10,000 kg
enameller
4.45 coefficient of expansion if required in consultation with the frit manufacturer and the per 10,000 kg
enameller

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