Materials

Hardness testing on metals is used to evaluate the resistance of a metal to deformation or permanent damage, specifically in terms of indentations or scratching. It involves applying a consistent force using a rounded or pointed object under controlled conditions to create a small dent on the surface of a metal. The size of the dent is then measured to determine the hardness of the material.

To carry out a hardness test, a constant force must be applied to the material, using a rounded or pointed indenter to form an indentation on the surface of the material. The type of indenter used depends on the type of hardness test being performed. The indentation created on the surface is then measured to determine the material’s hardness.

There are many methods of hardness testing available, each with their own standards and benefits, but selecting the right hardness test is usually determined by:

The shape and size of the metal material sample

The area of the sample that needs to be tested

Ease of application

In our mechanical department, we specialise in Rockwell, Brinell, and Vickers hardness tests. Our metallurgical department also offers micro-hardness and Knoop hardness testing.

By comparing the hardness values of different materials, the performance of the materials can be evaluated, providing a basis for the development of new materials. For example, studying the hardness characteristics of new materials, comparing the hardness differences of different materials, analyzing the relationship between the microstructure of materials and hardness, etc. The JOHOYD hardness tester provides important experimental data and results for these studies.