History. Proposed by Swedish engineer Johan August Brinell in 1900, it was the first widely used and standardised hardness test in engineering and metallurgy.The large size of indentation and possible damage to test-piece limits its usefulness. However, it also had the useful feature that the hardness value divided by two gave the approximate UTS in ksi for steels.
A chart is then used to convert the averaged diameter measurement to a Brinell hardness number. Test forces range from 500 to 3000 kgf. A Brinell hardness result measures the permanent width of indentation produced by a carbide indenter applied to a test specimen at a given load, for a given length of time.
History Behind the Brinell Test. Let’s take a quick glance at the history behind the Brinell test. In 1900, Dr. J.A. Brinell invented this test. As an honor to him, the test named as a Brinell test. It is the oldest hardness test of all time. This test is used to calculate the hardness of the castings and forgings.
In the Brinell hardness test, an optical method, the size of indentation left by the indenter is measured. In contrast to the likewise optical Vickers method,which involves a pyramid-shaped indenter being pressed into a specimen, the Brinell method uses a spherical indenter.. The larger the indent left in the surface of a workpiece (specimen) by the Brinell indenter with a defined ball ...
Brinell Hardness Test Dr. J. A. Brinell invented the Brinell test in Sweden in 1900. The oldest of the hardness test methods in common use today, the Brinell test is frequently used to determine the hardness of forgings and castings that have a grain structure too course for Rockwell or Vickers testing.
An alternative method is the Brinell hardness test, which uses a hardened steel (or tungsten carbide) ball indenter with a diameter D of, usually, 10 mm. This is applied under a load P of 500–3000 kg applied for 10–30 s. The diameter of the circular indentation d is measured in millimetres. The hardness number, (HB) is calculated using the following equation:
The Brinell hardness test is defined in ASTM E10 is used to calculate Brinell hardness of the metal. It is used on the metal having a rough surface and harsh texture. The Brinell hardness test is used to measure the hardness of light metals like lead and tin, also hard metals like steel and iron.
Brinell Hardness Testing is a nondestructive testing method that determines the hardness of a metal by measuring the size of an indentation left by an indenter. At a defined ball diameter and test force, larger indents left in the surface by the Brinell Hardness Testing Machine indicate a softer material.
The Brinell hardness test was originally developed in the late 1800s by the Swedish engineer of the same name. He wanted to find a method to control the quality/hardness of steel. His solution was to press a railway wheel-bearing ball into the material and then measure the size of the mark it left. The method proved reliable and in 1900 the ...