Facility and indentation of the diamond into the coating during hardness test Copyright: © IOT Fischerscope HM2000 XYp (a) and indentation of the diamond into the coating during hardness test (b)

The FISCHERSCOPE® HM 2000 is designed to measure the indentation hardness HIT as well as further material intrinsic data, such as Vickers hardness HV. The system works according to the force-indentation depth-method according to DIN EN ISO 14577. A Vickers or Berkovich diamond is used as indenter and is pressed into the material or coating whose hardness has to be determined. The load applied onto the sample increases continually until its maximum value is reached. The test load, then, diminishes. A mark of the indenter is left in the sample. Throughout the entire load cycle, the indentation depth is measured. The indentation hardness HIT calculations are derived from the maximum load applied and the mark’s area. The geometry of the indenter and the shape of the mark left by the indenter in the material after the indentation process are taken under consideration in the calculations of the mark’s area. Besides the hardness value, the load-relief-cycle is able to deliver characteristics such as indentation modulus EIT. For analysis, the following indenter Vickers, Berkovich and cemented carbide balls with a diameter of Ø = 0.4 mm are available for the FISCHERSCOPE® HM 2000.

Technical data:

Parameter Value [Unit]
Domain of test load

0.4 mN – 2,000mN

Max. indentation depth h 150 µm
Load resolution RL ± 0,04 mN
Depth resolution RD ± 100 pm
Approaching velocity of the indenter vA ≤ 2 µm/s
Valid range of temperature + 5 °C to + 40 °C