Page 100 - QRedition5.0 062021

Quality Requirements Edition 5.0 European Enamel Association

As a comparison, the surface tension of:

Aluminum enamels = 170 to 250 mN/m
Cover coats = 220 to 250 mN/m

Ground coats = 240 to 300 mN/m

Measurement of surface tension of enamels
To measure the surface tension of enamels, one makes use of the drop method. Like all
measuring methods referring to this, the drop method also postulates an absolute
observance of many working and instrument parameters.

The discussion upon measuring procedures and conditions is not the aim of this
specification sheet.

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