BrinellHärte

BrinellHärte, commonly known as Brinell hardness, is a measurement of the hardness of a material, determined by the indentation left on the material's surface when a hard, spherical indenter is forced into it under a known load. This test method is widely used in industry and research due to its simplicity and the availability of Brinell testers.

The Brinell hardness test involves pressing a hardened steel ball of known diameter into the surface of the material to be tested with a specified force for a specified time. The force is typically applied for 10 to 30 seconds, depending on the material's hardness. The diameter of the resulting indentation is measured and used to calculate the Brinell hardness number (HB), which is the load divided by the surface area of the indentation.

The Brinell hardness number is expressed in units of megapascals (MPa). A higher Brinell hardness number indicates a harder material. The test is particularly useful for materials that are too soft or too brittle for other hardness tests, such as the Rockwell or Vickers tests.

The Brinell hardness test is also used to monitor the effects of heat treatment and other thermal processes on materials. It is important to note that the Brinell hardness number is not a measure of the material's resistance to wear or abrasion, but rather its resistance to localized plastic deformation.

The Brinell hardness test is standardized by various organizations, including ASTM International and the International Organization for Standardization (ISO). The test is widely used in quality control, research, and development, as well as in the manufacturing industry.