Steel Hardness Testing Files

I doubt the accuracy is any better than say plus or minus 3 to 5 rc.

Steel hardness testing files.

Set includes six files and a chart to convert to vickers scale. How to use a rockwell testing machine. It is an economical way to determine the hardness of steel on the rockwell c scale handles are marked with rockwell hardness values. Usually soft materials like 1018 mild steel will use the rockwell b scale which makes use of a 1 16 rounded steel penetrator with a 100 kg major load.

Tableofcontents listoffigures ix listoftables xii 1 introduction 1 2 rockwellhardnesstest 2 2 1significanceofthetest 2 2 2rockwellindentationtestprinciple 2 2. If a file can scratch your material then your material is softer than the file. Flexbar hardness testing files easy to use portable rockwell hardness testing system for use in all metalworking facilities. It is an economical way to determine the hardness of steel on the rockwell c scale handles are marked with rockwell hardness values.

The hardness of your test piece will be between the softest file that left a scratch and the next step down. That said this is about as good as the cheap bounce testers and a lot more flexible in use part doesn t have to be massive flat shaped etc. Flexbar introduces a unique new set of six specially shaped files each with a non slip grip color coded handle. The rockwell value is printed on each handle and the files range from hrc 40 through hrc 65.

If a file cannot scratch your material then your material is harder than the file. If it marks the material the material is less than 65 hrc. Each of the files is of a different hardness so it is possible to roughly gage hardness by which ones cut and which ones don t. Set includes six files and a chart to convert to vickers scale.

If a file cannot scratch your material then your material is harder than the file. People with experience using them say they can usually guess the hardness to within a couple of rc points by the way the hard file feels when scratching a piece. It s most commonly used to check the hardness of steel that s been heat treated. Pick out the penetrator.

Run the black file 65 hrc over test material.