Vickers hardness test method

The Vickers hardness test method is a widely used method for determining the hardness of materials. Named after its inventor, Smith-Petersen Vickers, this method is primarily used in metallurgy and materials testing to determine the hardness of metals and other materials.

The Vickers hardness testing method uses a pyramid-shaped diamond or carbide tip that is pressed into the material to be tested. The tip has a specific geometric shape with an angle of 136 degrees between the two main surfaces. The penetration depth is measured to determine the hardness of the material.

During the test, a specific load is applied to the tip, typically in the range of a few grams to several kilograms. The duration of the load can vary, but usually the load is maintained for a few seconds. After the load is removed, the diagonal of the indentation of the pyramid impression is measured with a microscope. The hardness is then calculated based on the indentation size and the applied load.

One advantage of the Vickers hardness testing method is its suitability for a wide range of materials, regardless of their hardness. It can be used for soft materials such as plastics as well as very hard materials such as ceramics or steel. In addition, the method offers high accuracy and reproducibility of results.

The Vickers hardness testing method is used in various industries, including metallurgy, manufacturing, quality assurance and materials testing. It is an important method for evaluating the mechanical properties of materials and is often used to determine the suitability of materials for specific applications.