Hardness Testing Blocks & Machines

Hardness Reference Blocks

Hardness reference blocks are typically used to calibrate and verify the accuracy of hardness testing equipment.
Knoop Hardness Test Block - Boxed and Certificate

Knoop Hardness
Reference Blocks

Brinell Test Block Boxed and Certificate

Brinell Hardness
Reference Blocks

Vickers Test Block - Boxed and Certificate

Vickers Hardness
Reference Blocks

Hardness Testing Machines

Hardness Testing machines measure the depth of penetration of an indenter under a load, and are commonly used for testing metals.

Fixed Weight Machines

Electronic Closed Loop Machines

About us

Founded in 1976, Indentec Hardness Testing Machines Ltd became part of the ZwickRoell Group in 2000. As the competence centre for Rockwell testing within the ZwickRoell Group Indentec develops and manufactures machines for Rockwell hardness testing as well as calibration test blocks for wider hardness methods. The design, development and manufacture of reliable and robust Rockwell hardness machines requires expertise in mechanical, electronic and software engineering. The deep knowledge of Rockwell hardness testing means Indentec will deliver high quality standard products and an efficient customisation programme.
About Us
Indentec team member working testing hardness on blocks
Indentec team member working with our hardness testing machine


If you have any additional questions or concerns, please don’t hesitate to contact us.

A hardness testing machine is used to measure the hardness of materials. This is important in many industries to ensure that materials meet specific quality standards and can perform their intended functions.

Hardness testing machines can be used to test a wide range of materials, including metals, ceramics, plastics, and composites.

Hardness test blocks are samples of materials with a known and consistent hardness. They are used to calibrate and verify the accuracy of hardness testing machines.

During the calibration process, a hardness test block is placed under the indenter of a hardness testing machine, and the hardness value is measured. This value is then compared to the known hardness value of the block to ensure that the testing equipment is providing accurate results.

Some common types of hardness test blocks include cylindrical, rectangular, and spherical blocks made of materials such as steel, tungsten carbide, or ceramics.

It is recommended to calibrate hardness testing machines using hardness test blocks at regular intervals, such as annually or after a certain number of tests, to ensure reliable results.

Factors that can affect the accuracy of hardness testing machines include improper calibration, improper use of the testing equipment, variations in the surface finish or preparation of the test sample, and environmental factors such as temperature and humidity.

Please feel free to contact our product experts. We look forward to discussing your needs.