The Vickers hardness test method entails pressing a diamond indenter in the shape of a right pyramid with a square base and an angle of 136 degrees between opposed faces while applying stress ranging from 1 to 100 kgf on the test material. Typically, the entire load is applied for 10 to 15 seconds. Using a microscope, the two diagonals of the indentation left on the material’s surface after the load has been removed are measured, and their average is computed.

Calculations are used to determine the size of the indentation’s sloping surface. The result of dividing the kgf weight by the square millimetre area of the indentation is the Vickers hardness. The Vickers machine, a floor-standing instrument that costs more than the Brinell or Rockwell machines, is incredibly versatile and precise for testing the softest and hardest of materials under varied loads.

The following Vickers Test Force can be applied in Universal Hardness Tester for Vickers / Knoop, Rockwell and Brinell: 5kgf(49N), 10kgf(98N), 20kgf(196N), 30kgf(294N), 40kgf(392N), 50kgf(490N), 60kgf(588N), 80kgf(784N), 100kgf(980N), 120kgf(1176N)

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