NOSELAB ATS s.r.l.

TEST EQUIPMENT

SP0505 SP0510

Pendulum Hardness (Koenig or Persoz)

4022000X

Surface Hardness

The pendulum hardness test is based on the principle that the amplitude of the pendulum’s oscillation will decrease more quickly when supported on a softer surface. There are several hardness tests which relate the damping of an oscillation motion to the hardness of surfaces.

  • The Persoz test measures the time for the amplitude to decrease from 12° to 4°.
  • The Konig measures time taken from 6° to 3°.

The times taken in Persoz tests are approximately double those in Konig tests and so the Persoz has a greater degree of discrimination. 

Standards

ISO 1522
BS3900:E5:1973
DIN 53157
ASTM D4366.