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high-hardness

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  • high carbon steel — A very hard steel, as opposed to plain carbon steel. Hypereutectoid steels containing more than 0.8% carbon. Such steels consist of iron carbide (cementite) and pearlite when slow cooled. They are capable of being heat treated to high hardness,… …   Dictionary of automotive terms

  • High speed steel — (often abbreviated HSS, sometimes HS) is a material usually used in the manufacture of machine tool bits and other cutters. It is often used in power saw blades and drill bits. It is superior to the older high carbon steel tools used extensively… …   Wikipedia

  • Hardness — This article is about mechanical properties of materials. For other uses, see Hard. Hardness is the measure of how resistant solid matter is to various kinds of permanent shape change when a force is applied. Macroscopic hardness is generally… …   Wikipedia

  • high-speed steel — noun an alloy steel that remains hard at a red heat; used to make metal cutting tools • Syn: ↑hot work steel • Hypernyms: ↑tool steel * * * noun : an alloy tool steel which when heat treated retains much of its hardness and toughness at red heat… …   Useful english dictionary

  • hardness — water with a high mineral content, the name deriving from the fact that it is hard to develop a lather for cleaning. The concentration of calcium and magnesium ions in water is expressed as p.p.m. or mg/l of calcium carbonate equivalents. Soft… …   Dictionary of ichthyology

  • high-zone tolerance — Tolerance Tol er*ance, n. [L. tolerantia: cf. F. tol[ e]rance.] 1. The power or capacity of enduring; the act of enduring; endurance. [1913 Webster] Diogenes, one frosty morning, came into the market place, shaking, to show his tolerance. Bacon.… …   The Collaborative International Dictionary of English

  • high speed steel — noun Abbreviated HSS. A kind of tool steel, invented in the early 20th century, which retains its hardness and temper at high temperatures (at which previous kinds of tool steel would soften), thus allowing cutters made from it to be employed at… …   Wiktionary

  • high-speed — /ˈhaɪ spid / (say huy speed) adjective 1. operating, or capable of operating at a high speed. 2. Photography (of film) usable with low illumination and short exposures. 3. (of steel) especially hard and capable of retaining its hardness even at… …  

  • high speed steel — this term was derived from the fact that it is capable of cutting metal at a much higher rate than carbon tool steel and continues to cut and retain its hardness even when the point of the tool is heated to a low red temperature. Tungsten is the… …   Mechanics glossary

  • Indentation hardness — tests are used to determine the hardness of a material to deformation. Several such tests exist, wherein the examined material is indented until an impression is formed; these tests can be performed on a macroscopic or microscopic scale. When… …   Wikipedia

  • Vickers hardness test — A Vickers hardness tester The Vickers hardness test was developed in 1924 by Smith and Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials.[1] The Vickers test is often easier to use than other… …   Wikipedia

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