Hardness testing devices, Hardness testing

A strength of HAHN+KOLB for decades

The aim of heat treatment is to change the properties of materials so that they meet the requirements. In hardening, for example, a higher mechanical resistance is achieved through targeted changes and transformations of a microstructure. What has a positive effect on the hardened material is at the same time a challenge for the subsequent machining processes. Even an increase in the hardness value from 62 HRC to 64 HRC, for example, places many times more stress on cutting tools. Stationary and mobile hardness testing devices are used to determine the hardness of workpieces.


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Choosing the right hardness testing device

Depending on the material, the expected hardness, the component size/mass and accessibility, and the testing task itself, the appropriate hardness testing method is selected. The most common hardness testing methods are Rockwell, Brinell, Vickers and Knoop, which are mostly used in stationary hardness testing devices. While Rockwell is evaluated using the depth measurement method, the Brinell, Vickers and Knoop methods are evaluated optically. However, the requirements for stationary hardness testing are not always met. In this case, mobile hardness testing devices are the right choice. UCI (Ultrasonic Contact Impedance), Leeb (rebound hardness testing) or Poldi (impact hardness testing) are common methods used for this purpose.

Our extensive assortment in hardness testing

  • Small load hardness testers (micro)
  • Universal hardness testers (macro)
  • Rockwell hardness testing devices
  • Mobile hardness testing devices
  • Shore hardness testing devices
  • Hardness reference plates
  • Indenters