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Brinell hardness number

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Brinell hardness number
A measure of Brinell hardness; obtained by dividing the load expressed in kilograms (applied to a ball, usually 10 mm in diameter), by the area of indentation, expressed in square millimeters.


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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.
The Brinell Hardness Number (BHN) is determined by dividing the kilogram load by the area (in square millimeters) of the circle created at the rim of the dimple or impression left in the workpiece surface.
 
 
 
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