The Brinell scale characterises the indentation hardness of materials through the scale of penetration of an indenter, loaded on a material test-piece. It is one of several definitions of hardness in materials science. In materials science, hardness is the characteristic of a solid material expressing its resistance to permanent deformation. ... The Materials Science Tetrahedron, which often also includes Characterization at the center Materials science is the multidisciplinary field relating the performance and function of matter in any and all applications to its micro, nano, and atomic-structure, and vice versa. ...

Brinelling refers to surface fatigue caused by repeated impact or overloading. It is a common cause of roller bearing failures, and loss of preload in bolted joints when a hardened washer is not used. Engineers will use the Brinell hardness of materials in their calculations to avoid this mode of failure. Fretting corrosion can cause a similar-looking kind of damage and is called false brinelling even though the mechanism is different. A bearing is a component used to reduce friction in a machine. ... There are three kinds of fastener given the name bolt. ... Brinelling is surface damage caused by repeated overload; false Brinelling is damage caused by fretting corrosion that causes similar-looking damage via a different mechanism. ...

Proposed by a Swedish engineer Johan August Brinell (1849 - 1925) 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. Look up engineer in Wiktionary, the free dictionary. ... Swedish engineer John August Brinell (1849–1925) is the creator of the Brinell hardness test and namesake of the failure mechanism known as brinelling. ... 1849 was a common year starting on Monday (see link for calendar). ... 1925 (MCMXXV) was a common year starting on Thursday (link will take you to calendar). ... 1900 (MCM) was an exceptional common year starting on Monday. ... Engineering is the application of scientific and technical knowledge to solve human problems. ... Metallurgy is a domain of materials science and of materials engineering that studies the physical and chemical behavior of metallic elements and their mixtures, which are called alloys. ...

The typical test uses a 10 mm diameter steel ball as an indenter with a 3,000 kgf (29 kN) force. For softer materials, a smaller force is used; for harder materials, a tungsten carbide ball is substituted for the steel ball. The indentation is measured and hardness calculated as: A millimetre (American spelling: millimeter), symbol mm is an SI unit of length that is equal to one thousandth of a metre. ... For the geometric term, see diameter. ... The old steel cable of a colliery winding tower Steel is a metal alloy whose major component is iron, with carbon being the primary alloying material. ... The deprecated unit kilogram-force (kgf) or kilopond (kp) is the force exerted by one kilogram of mass in standard Earth gravity (defined as exactly 9. ... Tungsten carbide, WC or W2C, is a chemical compound containing tungsten and carbon, similar to titanium carbide. ...

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KGF is the short form of Kolar Gold Fields in Karnataka. ...

Common values

When quoting a Brinell hardness number (HB), the conditions of the test used to obtain the number must be specified. The standard format for specifying tests can be seen in the example "HBW 10/3000". "HBW" means that a tungsten carbide ball indenter was used, as opposed to "HBS", which means a hardened steel ball. The "10" is the ball diameter in millimetres. The "3000" is the force in kilograms force.

Despite being fairly hard, cedar is a softwood Wood from conifers are generally referred to as softwood; the term is also used as an adjective for the trees that produce softwood. ... Species About 115. ... Beech is a typical temperate zone hardwood The term hardwood designates wood from angiosperm trees. ... General Name, Symbol, Number aluminium, Al, 13 Chemical series poor metals Group, Period, Block 13, 3, p Appearance silvery Atomic mass 26. ... General Name, Symbol, Number copper, Cu, 29 Chemical series transition metals Group, Period, Block 11, 4, d Appearance metallic brown Atomic mass 63. ... Mild steel is the most common form of steel as its price is relatively low while it provides material properties that are acceptable for many applications. ... In metallurgy, stainless steel (inox) is defined as a ferrous alloy with a minimum of 10. ... This article refers to the material. ... Tool steel refers to a variety of carbon and alloy steels that are particularly well-suited to be made into tools. ...

Standards

• International (ISO) and European (CEN) Standard

• EN ISO 6506-1 : Metallic materials - Brinell hardness test - Part 1 : test method.
• EN ISO 6506-2 : Metallic materials - Brinell hardness test - Part 2 : verification and calibration of testing machine.
• EN ISO 6506-3 : Metallic materials - Brinell hardness test - Part 3 : calibration of reference blocks

• US standard (ASTM International)

• ASTM E10 : : Standard method for Brinell hardness of metallic materials.

Standards are produced by many organizations, some for internal usage only, others for use by a groups of people, groups of companies, or a subsection of an industry. ... Logo of the International Organization for Standardization The International Organization for Standardization (ISO) is an international standard-setting body composed of representatives from national standards bodies. ... CEN, the European Committee for Standardization, is a private non-profit organization whose mission is to foster the European economy in global trading, the welfare of European citizens and the environment by providing an efficient infrastructure to interested parties for the development, maintenance and distribution of coherent sets of standards... ASTM International is an international voluntary standards organization that develops and produces technical standards for materials, products, systems and services. ... ASTM International is an international voluntary standards organization that develops and produces technical standards for materials, products, systems and services. ...

See also

• Vickers hardness test
• Rockwell scale
• Knoop hardness test