The Brinell hardness test for steel, involves impressing a ball 10 mm diameter, of hard steel or tungsten carbide, with a loading of 3000 kilograms into the steel surface. The hardness of the steel is then determined by measurement of the indentation. For steels with a hardness over 500 BHN the Vickers test is more reliable.
A standard method of measuring the hardness of materials. The smooth surface of the metal is subjected to indentation by a hardened steel ball under pressure. The diameter of the indentation in the material surface is then measured by a microscope and the hardness value is read from a chart or determined by a prescribed formula.
This test consists of forcing a ball of standard diameter into the specimen being tested under standard pressure, and judging the hardness of the material by the amount of metal displaced.
A test involving a ball of some hard steel or carbide with a 10 mm diameter that is propelled into a steel's surface with great force (3000 kg). The test evaluates hardness by measuring the ball's indentation into the face of the steel.
A test for determining the hardness of a material by forcing a hard steel or carbide ball of specified diameter into it under a specified load. The result is expressed at the Brinell hardness number, which is the value obtained by dividing the applied load in kilograms by the surface area of the resulting impression in square millimeters. See Brinell (Bhn); Rockwell C (Rc).
an indentation hardness test using calibrated machines to force a hard ball, under specified conditions, into the surface of the material under test and to measure the diameter of the resulting impression after removal of the load.
A method used to measure how hard a material is. Typically for gray iron castings, a 3000kg metal ball is impressed on the surface of a flat gray iron piece; after removing the ball, the indentation in the metal is recorded and measured, determining a hardness value.
A popular method for determining the hardness of a piece of metal by pressing a 10 mm hardened steel ball into the ground surface under 500-3000 Kg load. Comparison of the diameter of the impression with that of a known material hardness provides a relative indication of hardness of the piece of metal being tested. The result represents the Brinell hardness number which is the value obtained by dividing the applied load in kilograms by the surface area of the impression in square millimeters.
