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Vickers hardness numbers are reported as xxxHVyy, e.g. 440HV30, or xxxHVyy/zz if duration of force differs from 10 s to 15 s, e.g. 440HV30/20, where: 440 is the hardness number, HV names the hardness scale (Vickers), 30 indicates the load used in kgf. 20 indicates the loading time if it differs from 10 s to 15 s.
The Vickers Hardness test can help with the material selection process for your chosen application; The test measures indentation hardness, using a diamond indenter; It's easy to use, with advantages over other tests that include less risk of damaging your test piece
4 gen 2017 · The Vickers hardness ( HV) is calculated using the following Vickers hardness formula: . where d is the average of the two diagonals of the imprint and F is the applied load. Hardness in GPa is calculated as follows: . The yield stress can be approximated from the hardness (given in HV) as follows: .
18 gen 2024 · Mathematically, Vickers hardness number in \text {kgf/mm}^2 kgf/mm2 is given by: \footnotesize HV = \frac {\text {Force}} {\text {Area}} = \frac {2F \sin {\frac {\alpha} {2}}} {gd^2} H V = AreaForce = gd22F sin 2α. where: g. g g – Acceleration due to gravity, g = 9.80665 m/s 2.
The Vickers hardness test is suitable for a wide range of applications, including micro hardness testing. On this page, you can find a description of the Vickers hardness test, practical information on how to apply it and a list of our micro hardness testing machines for Vickers.
Vickers Hardness Testing. TEST TYPES. Hardness is a characteristic of a material, not a fundamental physical property. It is defined as the resistance to indentation, and it is determined by measuring the permanent depth of the indentation.
Metal standards. Vickers hardness testing metals. Vickers hardness test to ISO 6507 / ASTM E384. The Vickers hardness test is ideal for testing of all metals and is therefore the method with the widest range of application.