Due to the energy crisis and the alleged shortage of raw materials, we are all trying to save energy and resources wherever possible.
Most of us in Europe have an enamelled water storage tank in our boiler room and the crisis has not stopped at this product either.
 
In the standardised production of enamelled water storage tanks in accordance with DIN 4753:3, a minimum layer thickness of 150µm has been specified. But what happens if the layer thickness falls below this value?
 
Enamels from the area of hot water storage tanks with different layer thicknesses were analysed. The main focus of the investigation was the influence of thin layer thicknesses on the migration of the elements.
 
The enamels were tested in accordance with DIN EN 12873-1 at a temperature of 60°C and analysed according to the German evaluation basis for enamels and ceramic materials in contact with drinking water.
 
Can we use these results to ensure that thin layer thicknesses do not have a negative effect on migration results?
 
Selected enamels were tested and analysed for hot water resistance in accordance with DIN 4753:3 at lower layer thicknesses than specified in the standard.
 
The quality of the enamels for water storage tanks must not be reduced despite all the crises in the area of energy and raw materials.