How is BHN calculated?
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BHN = Brinell Hardness Number (kgf/mm2) P = applied load in kilogram-force (kgf) D = diameter of indenter (mm) d = diameter of indentation (mm)
What are the advantages of Brinell hardness test?
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Advantages of Brinell Hardness Test:
The flat irregular metal surface does not affect the Brinell hardness test.
This hardness test is less sensitive.
It is used to measure the hardness of components made from powder metallurgy and cast.
It can bear the heavy load for testing.
What are the disadvantages of the Brinell hardness method?
The Brinell method has the following disadvantages:
High risk of deforming the material to be tested when testing in the macro range with high test loads (e.g. HBW 10/3000) and consequent risk of measuring errors due to wall formation.
