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High temperature hardness

  • 1.  High temperature hardness

    Posted 03-10-2021 17:19
    I am seeking a high-temperature hardness tester. Greatly appreciate it if you can share some information!


    Yuan Li
    University of Tennessee
    Knoxville TN
    (865) 438-9977

  • 2.  RE: High temperature hardness

    Posted 03-16-2021 13:48
    Are you looking to a testing facility that does high temperature hardness testing?

    Carrie Hawk
    ASM International
    Community Engagement Specialist


  • 3.  RE: High temperature hardness

    Posted 03-16-2021 15:26
     I have been waiting to see who else responds. How hot do you need for the testing? We had an old Marshall Hot Hardness tester, model P11-64-3, that is designed to run in a moderate vacuum (~ 5 x 10-5 torr). It has a warnings to not run the sapphire indenter above 1,600 C but I don't think we ever ran ours over 1,400 C. It is a Vickers/Knoop machine and uses loads up to several kilograms. Probably state of the art in 1964. I am curious what current state of the art is.

    Maybe there are some in the used market?

    Joseph Tylczak
    Department of Energy, National Energy Technology Laboratory
    Albany OR
    (541) 928-2193

  • 4.  RE: High temperature hardness

    Posted 16 days ago
    Dear Yuan,

    Are you interested in an elevated hardness tester at the macro-mechanical or micro-mechanical level? Or are you interested in nanomechanical through micro-mechanical levels? If it is the latter, you are just around the corner from the KLA Instruments Group / Nano Indenter team, which previously operated under the umbrella of Nanomechanics, Inc. corporate banner. While I do not have a high-temp nanoindenter from KLA myself, I have three KLA nanoindenters that I operate and manage. Accordingly, I've learned about their elevated temp as well as high temp options and would suggest that you consider reaching out to them. Feel free to note that I recommended you check them out since I have had the pleasure of working with a number of engineers there. Here is some info for the high temp in-situ option:​.

    Bryer C. Sousa, WPI​

    Bryer Sousa
    PhD Candidate
    Worcester Polytechnic Institute
    Worcester MA