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Hardness Tester Files

Article No. 11725

Hardness Tester Files Set of 6

Fowler's Hardness Tester File Set is an inexpensive, easy-to-use method for determining material hardness by sliding the file cross the object's surface.

$201.00 excl. taxes & shipping cost


  • Six color-coded files indicate hardness from 40 to 65 HRC.
  • Conveniently packaged in a leather-like case with a velcro lined flap
  • The files are approximately .157" in diameter and 7" in length (4.30 x 175mm).

Technical Attributes

  • Data
    Red40 HRC40-42 HRC392-412 HV
    Yellow45 HRC45-47 HRC446-471 HV
    Light Green50 HRC50-52 HRC513-544 HV
    Green55 HRC55-57 HRC595-633 HV
    Blue60 HRC60-62 HRC697-746 HV
    Black65 HRC64-66 HRC800-865 HV


  1. Run the Black file (65 HRC) over test material. If it marks the material, the material is less than 65 HRC.
  2. Try the Blue file (60 HRC). If it does not mark the material, it indicates that the file is softer than the material and is between 60 and 65 HRC.
  3. If the Blue file (60 HRC) marked the material, continue testing with the Green (55 HRC), Light-Green (50 HRC), etc. until the material is not marked. The approximate hardness of the material is between the file that marks the material and the file that slides over the material.
  4. Included chart also shows the appropriate Vickers Hardness (HV).

Delivery Content

Set of six color-coded files, Vickers Hardness chart and carrying case

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