Yuan,
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?
Joe
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Joseph Tylczak
Metallurgist
Department of Energy, National Energy Technology Laboratory
Albany OR
(541) 928-2193
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Original Message:
Sent: 03-10-2021 17:18
From: Yuan Li
Subject: High temperature hardness
I am seeking a high-temperature hardness tester. Greatly appreciate it if you can share some information!
Yuan
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Yuan Li
University of Tennessee
Knoxville TN
(865) 438-9977
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