Question

____________ use a diamond cone or hard steel ball to carry out hardness tests to HRB or HRC scales.

• A. Brinell hardness test
• B. Vickers macro hardness tests
• C. Vickers or Knoop tests
• D. Rockwell hardness tests

Answer 1

Answer:

A. Brinell hardness test

Hardness tests are used to determine the hardness of a material. Rockwell hardness test is a microhardness test that uses a diamond cone or hard steel ball to carry out hardness tests to HRB or HRC scales. Brinell hardness test uses a hard spherical incdenter of 10 mm diameter. Knoop and Vickers hardness tests are micro indentation hardness tests that use a small diamond indenter of pyramidal shape.