BHN Hardness Testing Machine Ball Hardness

  • BHN Hardness Testing Machine Ball Hardness

    Posted by william on 27/11/2021 at 3:18 pm

    How to certify Indenter ( tungsten carbide steel ball 10mm dia ) HARDNESS as per ASTM E 10 .Who is calibrating agency.No accredited lab is able to certify because they have not any indenter having more hardness than bsll to be certified.

    jaden replied 1 year ago 2 Members · 1 Reply
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  • Hardness Testing (HT)

    jaden

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    28/11/2021 at 12:47 pm
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    This isn’t something I get involved in, but your question looked interesting. Two thoughts:

    1) Doesn’t that ASTM standard (in A3.4) call out 1500 HV10 (Vickers microhardness) – the hardness indenter for that scale is a diamond (inherently harder than the carbide).
    2) Could you get around need to self-verify hardness if you purchase an assembled ball/indenter? A quick check online suggests those can be supplied with certification.

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