Newbies_Kid Posted June 4, 2010 Share Posted June 4, 2010 I've a problem here, my boss need me to measure the hardness of a piece of copper strip, but we didn't have any hardness test machine (vickers, durometer, brinell etc) to do that. But we do have a tensile machine. Can i do something with the tensile test to measure hardness? Your help is really appreciated Link to comment Share on other sites More sharing options...
cjohnso0 Posted June 9, 2010 Share Posted June 9, 2010 I have never heard of a tensile test machine being used to check hardness. You would do well to send a sample to a metallurgical test facility for the test. Around here it would not be expensive (<$100 US) for a simple hardness check. I imagine any correlation between hardness and tensile strength would be very inaccurate. Link to comment Share on other sites More sharing options...
Newbies_Kid Posted June 12, 2010 Author Share Posted June 12, 2010 Yeah i know that we can't get a read from tensile machine for hardness. I explained to my boss and he understand. But he said that if the material is hard, the material will elongate before failed during the tensile test. So one question come in my mind, are ductile material conform to be hard and brittle material must all be soft? Link to comment Share on other sites More sharing options...
cypress Posted June 12, 2010 Share Posted June 12, 2010 Actually, it is generally the other way around. Brittle implies hard and ductile implies soft. Think diamonds, very hard but also quite brittle, while lead is very soft but ductile as heck. 1 Link to comment Share on other sites More sharing options...
Newbies_Kid Posted June 13, 2010 Author Share Posted June 13, 2010 That makes sense. When we use Vickers test, soft material is easy to be indented by diamond while hard material is opposite. Link to comment Share on other sites More sharing options...
jimpaker Posted December 21, 2011 Share Posted December 21, 2011 HI Newbies kid, In south America nearly all metallurgists use hardness testers like the Tru- blue II hardness tester made by United Calibration Corporation which uses an indenter.They are fairly accurate, See more herehttp://www.unitedcalibration.com/ Jim paker Link to comment Share on other sites More sharing options...
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