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Rockwell hardness testing machines

Rockwell hardness testers are important instruments in materials testing. They are used to determine the hardness of metals and other materials. Named after Stanley P. Rockwell, who developed the Rockwell hardness testing method in the 1920s, these devices provide a reliable and accurate way of measuring the resistance of a material to plastic deformation.

How the Rockwell hardness test works

The testing process is carried out by penetrating a test piece - either in the form of a diamond cone or a hard metal ball - into the material. The penetration depth is then measured to determine the hardness. Various Rockwell scales are used, depending on the material and application. The most common are

  • Rockwell C scale (HRC) for hard steels
  • Rockwell B scale (HRB) for softer metals such as copper and aluminum
  • Rockwell A scale (HRA) for extremely hard materials

Advantages of Rockwell hardness testing

Rockwell hardness testers are characterized by their user-friendliness and versatility. They enable quick and easy hardness testing directly on site or in the laboratory. The tests are virtually non-destructive, which means that the tested materials and test specimens can usually be reused after the test.

Design and function

A typical Rockwell hardness tester consists of:

  • A height-adjustable sample support for positioning the test specimen
  • A test head with indenter for the measurement

By applying a predefined test force, with which the indenter is pressed into the material in two force stages and the subsequent measurement of the permanent indentation depth, the hardness of the material can be precisely determined.

Areas of application

The results of Rockwell hardness tests are decisive for the safety and reliability of components in various industries. Among other things, they are used in:

  • The metal industry - quality assurance of steel and alloys
  • The aerospace industry - material testing for safety-critical components
  • The automotive industry - testing the hardness of components to ensure safety and durability

Individual advice & customized solutions

Are you interested in one of our hardness testing machines? We will provide you with comprehensive advice and find the right hardness tester for your application. See for yourself during a demonstration!

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Rockwell-Hardness tester HP 150 R

HP 150 R - The Rockwell specialist

The Rockwell Hardness Tester HP 150 R is suitable for hardness tests in the range from 0.2 kg to 250 kg.

AT 130 DR

Semiautomatic Standing Device AT 130 DR

  • Rockwell testing / measurement principle
  • Version DR with Rockwell and Brinell, testing loads: 588.4N to 1.838N
  • Version DSR with Super Rockwell and Brinell, testing loads: 98N to 441N
  • Digital reading of Rockwell and Brinell scales acc. to DIN-EN and ASTM
  • addional scales on request
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Safe test results:

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