BHN Brinell Hardness Number Test


Load (P) : Kilogram Force
Steel Ball Diameter (D) :millimeter
Depression Diameter (d) :millimeter



Brinell Hardness Number (BHN): 

The Calculator calculates the BHN (Brinell Number). BHN is the numerical value assigned to the hardness of alloys and metals. The testing is to determining the hardness of a metal by pressing a steel ball of a standard size into the metal using a standard force.


BHN = (2*P) / [ (pi*D)(D - sqrt(D2-d2)) ]

The Brinell Hardness Number (BHN) is also known as HB.