A material’s resistance to permanent deformation, such as piercing or scratching, is referred to as hardness. One method of determining hardness is through static indentation tests. A cone, pyramid, or ball is driven into the material’s surface to create a static depression. The hardness is determined by the relationship between the stress applied for a specific amount of time and the size or depth of the indentation. A square pyramidal diamond indenter with predetermined face angles is used in Vickers hardness testing.

The test should be run on a flat specimen with a polished or prepared surface for high-accuracy measurement. The amount of force applied determines the quality of the necessary surface. The indentation perimeter and depth must always be distinct under a microscope in all tests.

For NextGen’s Macro Vickers Hardness Tester NG-5 the Maximum Height of Specimen is 8.5cm and Maximum Depth is 11cm.

For NextGen’s Macro Vickers Hardness Testers NG-10, NG-30, NG-50 the Maximum Height of Specimen is 16cm and Maximum Depth is 30cm.

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