Mechanical engineers employ indentation hardness tests to assess a material’s resistance to deformation. These tests, which can be carried out on a macroscopic or microscopic scale, involve indenting the substance under examination until an impression is made.

When testing metals, the relationship between indentation hardness and tensile strength is usually linear, but it is not always accurate and frequently only applies to narrow ranges of strength and hardness for each indentation shape. This link facilitates economically crucial nondestructive testing of bulk metal deliveries with lightweight, even portable equipment, such as hand-held Rockwell hardness testers. Poor technique, inaccurate equipment calibration, and the process’s strain hardening effect are the main causes of inaccuracy in indentation tests. However, it has been experimentally determined through “strainless hardness tests” that the effect is minimal with smaller indentations.

The NG-1000 – Micro Vickers and Knoop Hardness tester offer the following optional items: 15x Eyepiece, 2000gf Load, Dual Vickers/Knoop Indenter.

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