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Which of the following tests are microhardness tests? P. Brinell Hardness Q. Rockwell Hardness R. Knoop Hardness S. Vickers Hardness

Which of the following tests are microhardness tests? P. Brinell Hardness Q. Rockwell Hardness R. Knoop Hardness S. Vickers Hardness Correct Answer R, S

Concept:

Additional Information

Brinell Hardness:

  • In Brinell hardness tests, hard, hardened steel (or Tungsten carbide) spherical indenter is forced into the surface of a metal to be tested. 

Rockwell hardness test:

  • In this test, a hardened steel ball indenter and a conical diamond (Brale) indenter, is used for the indentation of material.

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