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Rockwell hardness number

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  • Rockwell hardness number — Rockwell hardness number. См. Число твердости по Роквеллу. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • Rockwell hardness number — a number indicative of the degree of relative hardness of materials, determined by measuring the depth of the impression made by a steel or diamond penetrator pressed into the surface of the material being tested. There are a number of Rockwell… …   Medical dictionary

  • Rockwell superficial hardness number — Rockwell superficial hardness number. См. Число поверхностной твердости по Роквеллу. (Источник: «Металлы и сплавы. Справочник.» Под редакцией Ю.П. Солнцева; НПО Профессионал , НПО Мир и семья ; Санкт Петербург, 2003 г.) …   Словарь металлургических терминов

  • hardness number — the number used to designate the hardness of metal. The number is related to the scale of values of a particular hardness test, as Rockwell B 80 or Brinell 150 …   Mechanics glossary

  • hardness number — a number indicative of the degree of relative hardness of materials. See Brinell, Knoop, Rockwell, and Vickers hardness n …   Medical dictionary

  • rockwell hardness — ˈräˌkwel , kwəl noun Usage: usually capitalized R Etymology: after Stanley P. Rockwell, 20th century American metallurgist : the hardness of a metal or alloy measured by an apparatus in which a diamond pointed cone is pressed into the metal to a… …   Useful english dictionary

  • Rockwell scale — The Rockwell scale is a hardness scale based on the indentation hardness of a material. The Rockwell test determines the hardness by measuring the depth of penetration of an indenter under a large load compared to the penetration made by a… …   Wikipedia

  • hardness tester — ▪ device       device that indicates the hardness of a material, usually by measuring the effect on its surface of a localized penetration by a standardized rounded or pointed indenter of diamond, carbide, or hard steel.       Brinell hardness is …   Universalium

  • Hardness comparison — There are a large number of hardness testing methods available (eg. Vickers, Brinell and Rockwell). Although it is impossible in many cases to give an exact conversion it is possible to give a comparison table. Hardness Comparison Table See also… …   Wikipedia

  • Rockwell number — Metall. a numerical expression of the hardness of a metal as determined by a test (Rockwell test) made by indenting a test piece with a Brale, or with a steel ball of specific diameter, under two successive loads and measuring the resulting… …   Universalium

  • Rockwell number — Metall. a numerical expression of the hardness of a metal as determined by a test (Rockwell test) made by indenting a test piece with a Brale, or with a steel ball of specific diameter, under two successive loads and measuring the resulting… …   Useful english dictionary

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