Vickers hardness testers
The Vickers hardness test method, also referred to as a microhardness test method (ASTM E-384, E92 and ISO 6507), consists of indenting the test material with a diamond indenter. This indenter has the form of a pyramid with a square base and an angle of 136 degrees between opposite faces subjected to a load of 1g to 120 Kgf. The method is mostly used for small parts, thin sections, or case depth work. The microhardness methods are used to test on almost any type of material. The Vickers test is useful for a variety of applications, for instance for testing thin materials like foils, or measuring individual microstructures.
The Vickers test is easy to use, since the size of the identer isn't of interest for the required calculations, and the indenter can be used for all materials, no matter the hardness. The Vickers hardness test has one of the widest scales, known as the Vickers Pyramid Number (HV) or Diamond Pyramid Hardness (DPH).
How it works
The Vickers method is based on an optical measurement system. The microhardness test procedure specifies a range of light loads. A diamond indenter is used to make an indentation, which is measured and converted to a hardness value. All sorts of materials can be used, as long as the test samples are carefully prepared, in order to provide a small enough specimen that can fit into the tester. Also the specimen’s surface should be smooth to permit a regular indentation shape and good measurement, and to ensure the sample can be held perpendicular to the indenter. Loads of Micro Vickers testing are normally very light: a few grams to one or several kilograms. Macro Vickers can take loads up to 30 kg or even more.
The indenter shape was supposed to be capable of producing geometrically similar impressions, irrespective of size. The impression should have well-defined points of measurement, and the indenter should strongly resist to self-deformation. A diamond, in the form of a square-based pyramid, lives up to these conditions.
Vickers testing machines
Below you find all our Micro and Macro Vickers testing systems.
In the early stage of your interest in our testers, our sales team will gather the required information to offer a product adapted to your individual requirements. Do not hesitate and ask for customized solutions on both software and hardware. In close cooperation with our customers we will develop and supply the right configuration for your job.