Hardness Inspector

Test metal objects to determine their degrees of hardness.
picture of Hardness Inspector

Quick Stats


Salary Range
$20,000 – $56,000

Data from U.S. Department of Labor


What do Hardness Inspectors do?

Tests metal objects to determine their degree of hardness, using hardness testing equipment: Positions workpiece on anvil of testing machine and turns controls to press steel ball or diamond point against surface of piece or to allow diamond-pointed hammer fall on surface to be tested. Measures diameter of indentation caused by steel balls, using microscope, or reads scale on test equipment that indicates depth of penetration of ball or diamond point, or calibrated height of hammer rebound. Reads hardness number from calibrated scale on equipment or converts scale reading to hardness number, using formula or conversion chart. Important variables may be indicated by trade names of equipment used. May cut cross section of sample part and examine part under microscope to determine hardness depth.


Should I be a Hardness Inspector?

You should have a high school degree or higher and share these traits:
  • Independent: You enjoy flying solo and doing things your own way.
  • Trustworthy: You are known for your personal integrity and honesty.
  • Levelheaded: You hold your emotions in check, even in tough situations.

  • Also known as: Harness Inspector

    How to become a Hardness Inspector

    Most Hardness Inspectors have no higher education and get on-the-job training. Think about earning a Certificate or Associate's degree to increase your competitiveness in the field. Chart?chd=s:9zcaaa&chl=no+college+%2869%25%29|certificate+%2828%25%29|associate%27s+%283%25%29|||&cht=p3&chs=466x180&chxr=0,69,69
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