Hardness evaluation?

C

Cold Kill

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I have a knife of which o would like to know the hardness of, but have no means of doing a true evaluation. I have other knives with a known hardness range, so can I use then in some manner to determine the hardness of the unknown knife? Along the same line, I have a few things with a known hardness on the Mohs scale, do they correlate to the Rockwell scale? I have no clue here, so any help is very appreciated.
 
Hardness is usually tested with a machine that presses a carbide or diamond ball (depending on the scale) into the material and measures the force required. So you'd need one of those machines... do you have any Universities near you that might have these machines? I know mine has a few.
 
Cold Kill said:
I have a knife of which o would like to know the hardness of, but have no means of doing a true evaluation. I have other knives with a known hardness range, so can I use then in some manner to determine the hardness of the unknown knife? Along the same line, I have a few things with a known hardness on the Mohs scale, do they correlate to the Rockwell scale? I have no clue here, so any help is very appreciated.
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Mohs is for minerals, and knives are not minerals. Not the same thing unfortunately. I'm sure you can do some calculations and find a standard deviation and apply that versus Rockwell readings.
 
Maybe try scratching it with the other knife of known hardness, like a Rockwell file?
 
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