Pendulum Hardness Tester

A pendulum resting on a coating surface is set into oscillation and the time for the oscillation amplitude to decrease by an amount specified in this International Standard is measured. The shorter the damping time, the lower the hardness. Two test procedures are considered in detail: König and Persoz.

The Persoz and König methods differ in period and amplitude of oscillation. The Persoz test measures the time taken for the amplitude of oscillation to decrease from 12° to 4°, while the König test measures from 6° to 3°[1][2]. The instruments embody the same principle - that the amplitude of oscillation of a pendulum touching a surface decreases more rapidly the softer the surface - but differ in dimensions, period, and amplitude of oscillation.

Solvica’s 509/S Pendulum Hardness Tester is the newest product which can be used in accordance with the following National and International Standards: ISO 1522, ASTM D4366, BS 3900-E5, DIN 53157, NBN T22-105, NF T30-016. It's a simple-to-use instrument and can be supplied in one of three model types: Persoz, König, and Persoz & König combined.

Click here for more information about our 509S pendulum hardness testers.