The hardness of a coating is measured by the number of
oscillations within the specified limits of amplitude.
There are two types of
pendulum which can be used with the
1. Elcometer 3045 Pendulum Hardness Tester –
Persoz - The Persoz test measures the time taken for the amplitude of oscillations to decrease from 12° to 4°
2. König. - The König test measures the
decrease from 6° to 3°.
The softer the coating, the higher the dampening on the
balls, the faster the reduction in amplitude of swing, therefore the less
cycles of oscillation.
The Elcometer 3045 Persoz & König Pendulum Hardness
Tester can be used in accordance with standards; ASTM D 4366, BS 3900 E5, DIN 53157, ISO 1522, NF T30-016.
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