This specification relates to measuring metallic materials’ Vickers hardness with an applied force ranging from 1 kgf to 120 kgf. The validation of the Vickers hardness testing devices is applicable to Part B. Furthermore, part C discusses the calibration of standardized test blocks. You can get all requirements from ASTM International.

The Routine test (with routine accuracy) and the Verification, Laboratory, or Referee test are two classes of standardized tests covered by this standard (with a much higher degree of accuracy required). The Referee Test is WMT&R’s area of expertise.

A tiny diamond indenter with an apical angle of 136 degrees is used in the Vickers Hardness Test and is pressed into the test material at a specified load. The indentation that results is then gauged along both axes, tip to tip. A formula, or more frequently a chart based on the formula, is used to translate the average of the two axis measurements into a Vickers Hardness value. The largest load that may be applied to the specimen during the test will produce the most accurate findings. A greater indentation with better measurement resolution and, hence, more reliable data is produced by a higher load.

NextGen’s universal Hardness Tester for Vickers / Knoop, Rockwell and Brinell comply ASTM-E92 Standard.

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