Brinell Hardness Number Calculator
English

BHN or Brinell Number is the numerical value assigned to the hardness of metals and alloys. The test is to determine the hardness of a metal by pressing a steel ball of a standard size into the metal using a standard force. The below given is the Brinell Hardness Number Calculator which helps you in doing the BHN Brinell Hardness Number test in simple. Just enter the values of load, steel ball diameter and depression diameter and submit to get the result.

BHN Brinell Hardness Number Test

Kilogram-Force
millimeter
millimeter

BHN or Brinell Number is the numerical value assigned to the hardness of metals and alloys. The test is to determine the hardness of a metal by pressing a steel ball of a standard size into the metal using a standard force. The below given is the Brinell Hardness Number Calculator which helps you in doing the BHN Brinell Hardness Number test in simple. Just enter the values of load, steel ball diameter and depression diameter and submit to get the result.

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Formula:

BHN = 2P / [ πD(D - √(D2-d2)) ] Where, P = Load D = Steel Ball Diameter d = Depression Diameter

Example:

Calculate the Brinell Hardness Number (BHN) for the load of 20 Kilogram force, steel ball diameter of 50 millimeter, and depression diameter of 15 millimeter.

Solution:

BHN = 2P / [ πD(D - √(D2-d2)) ]
= 2 x 20 / [ π 50 ( 50 - √( 502 - 152)) ]
= 0.11062642329324533

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