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hardness number

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hardness number [′härd·nəs ‚nəm·bər]
(engineering)
A number representing the relative hardness of a mineral, metal, or other material as determined by any of more than 30 different hardness tests.


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A cubic zirconia stone has a hardness number of about 9 on the hardness scale created by MOH.
Brinell Hardness Number (BHN): It can be defined as the method used for measuring the hardness of iron.
It is very hard, with a Brinell Hardness Number in the 300 to 380 range, but cutting can be very gummy.
 
 
 
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