Brinell hardness is a method used to measure the hardness of a material, typically a metal or alloy. It is named after the Swedish engineer Johan August Brinell, who developed the test in 1900.
The Brinell hardness test involves pressing a hardened steel or tungsten carbide ball of a specified size and weight into the surface of the material being tested. The indentation that is made by the ball is measured, and the Brinell hardness number (BHN) is calculated based on the applied load and the diameter of the indentation.
The Brinell hardness number is an indication of the material's resistance to indentation and deformation. It is commonly used to determine the suitability of a material for various industrial applications, such as in the automotive, aerospace, and construction industries.