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How To Use Hardness Tester Files

Posted by Travers Team on Sep 27, 2021 8:00:00 AM
Travers Team

A must for most any machine shop! An easy-to-use, dramatically less expensive alternative to a Benchtop Hardness Tester, the TTC Hardness Tester File Set allows you to quickly ascertain the hardness of your material. Watch resident tech expert Kurt Repsher demonstrate how to use Rockwell Hardness Tester Files in this video, and subscribe to our channel to see more exclusive application videos like this one!

 

 

Why Should You Test Material Hardness?

Hardness testing allows you to evaluate a material's properties, including strength and wear resistance. This helps you to determine whether a material is suitable for the application or purpose you require, and also whether a material treatment (like heat treatment, for instance) achieved the desired results. Ascertaining a material or workpiece's hardness allows you to select the right tool for your application and work more efficiently. Moreover, knowing the material or workpiece hardness and using the right tool for the application can help you avoid reduced tool life, poor finish, tool breakage and having to potentially scrap the part you are working on.

 

Material Hardness Testing Procedure

Hardness Tester Files and hardness testing chartThe TTC Hardness File Set provides an easy-to-use method for ascertaining material hardness, which can be determined by sliding the files across the surface of the material you are testing. The set includes six color coded files, which indicate hardness ranging from 40 to 65 HRC. As illustrated in the video, simply run the file across the surface of the object, starting with the hardest (65 HRC) file. If the file marks the surface, the material is less than 65 HRC. You would then proceed to the next hardest file (60 HRC) and repeat the process as needed until the hardness file is unable to mark the surface of he object you are testing. The approximate hardness of the material will be between the file that marks the surface and the most recent file to slide over the material without leaving a mark.

Color File Hardness Material Hardness Indication
Red 40-42 HRC
392-412 HV
40 HRC
Yellow 45-47 HRC
446-471 HV
45 HRC
Lime Green 50-52 HRC
513-544 HV
50 HRC
Green 55-57 HRC
595-633 HV
55 HRC
Blue 60-62 HRC
697-746 HV
60 HRC
Black 64-66 HRC
800-865 HV
65 HRC

 


 

WAnt to increase your aluminum machining efficiency?

By downloading the Aluminum Machining Guide you'll also find information on:Aluminum-Machining-Guide

  • Milling approach angles
  • Insert substrates, coatings & post treatment
  • Troubleshooting insert failure
  • Pros & cons of solid carbide vs. indexable tooling
  • How to choose the right tool for your aluminum milling application


Download Aluminum Machining Guide

Topics: Video, Measuring & Inspection, Metalworking and Machining

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