TTC 6 Piece Hardness Tester File Set

If you have a printer, tape and know how the search engine works, then you know what to do! :) It's functional, that in and of itself adds value for the money. It's small, so the size is great for my work bench area that is already brimming with tools, so the small foot print is also a plus!

While somewhat expensive, they are much cheaper than an actual Rockwell C hardness tester, and accurate enough for most machine shop needs. They are Japanese made. Use the tip to scratch or dig in to the metal piece in question. If it scratches or just digs in then your metal piece is softer on the Rockwell C scale. Move to the next lower probe until it does not scratch or dig in on your metal piece in question. You have now bracketed the hardness to within a 5 unit range on the Rockwell C scale. The whole process takes about 5 seconds per test range. Highly recommended for when tempering steel to a desired hardness, or when trying to identify the type and hardness of unlabeled scrap pieces.

Performs as described. Using these hardness files to test hardness of annealed and heat-treated tool steels in my shop. Measures Rockwell C-scale hardness within a few points, not a precise testing tool but is not intended or advertised to test more precisely than plus or minus a few points of hardness. Certainly adequate for my purposes in tool making and woodworking.

I probably didn't really need these. Hobby welder and make lots of stuff. Sometimes you need to know if you are working with a piece of hardened steel, but don't need to know exact rockwell hardness. These fit the bill. They seem to be accurate. My anvil face is supposed to be 55 hardness. The horn is regular cast steel. These showed my anvil face at between 55-60. You simply use the higher ones and work your way down until you can see it easily scratch the surface. Glad I have them, but don't use them much.

These are pricey, but indispensable if you have different bits of steel laying around and what to tell how hard they are, or want to check the results of your heat-treating. Use is pretty simple, gently scrub the surface with the files, starting at the hardest and moving to the softest. (Going from hard to soft keeps you from wearing out your soft files early.) The hardness of your test piece will be between the softest file that left a scratch and the next step down. 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. But even a novice can get within 5 points using these.

Lo qye necesitaba gracias pir envio en tiempo

Excellent hardness testers for the DIY folks. Use to test steel hardness. Use on bare metal and they are fantastic.

Seems to work well for testing hardness in steel. My gripe is the photo on the Amazon product page showed the instructions in English. What came had instructions in Chinese with a paper with printed instructions in English. One more thing to keep up with.

for testing hardness it is quite important , this is a good reference point to see your parts final quality of harness or reference to replacement to same quality, works well , i even prooved my brother in law , in snowmobile parts quality of harness

Item came in nice package and was delivered within the timeframe stated. This set of tool is very helpful for checking hardness of parts/ tools in the workshop when a professional hardness tester is not available. The original instruction is in Japanese, but seller also includes a translated copy in English. Very thoughtful. Overall this is a good tool to be had in the home workshop, or for small family-own shops where having professional hardness testers are not practical.

Zuverlassiger Liferant.Sehr gute Qualität.

Connaître la dureté des métaux utilisé, rapide et efficace donne un bon aperçu.

They work as described. Only flaw is the instructions are in Japanese.