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BHN Brinell Hardness Number Test

The Calculator calculates the BHN (Brinell Number) for given values:

Kg Force
mm
mm

 

 

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.

Formula:

Brinell Hardness Number = (2*P)/[(pi*D)(D - sqrt(D2-d2))]

Where

P = Load in Kilogram Force

D = Steel Ball Diameter in millimeter

d = Depression Diameter in millimeter

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