diamond pyramid hardness

diamond pyramid hardness
Vickers hardness number.

Medical dictionary. 2011.

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  • diamond pyramid hardnesstest — this test, more commonly known as the TestVickers test, finds greater use in the laboratory than the workshop. It employs a pyramid shaped diamond with an included angle of 136( which is impressed into the specimen using loads of 5 to 120 kg… …   Mechanics glossary

  • 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

  • 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

  • Vickers hardness — ▪ mineralogy       a measure of the hardness of a material, calculated from the size of an impression produced under load by a pyramid shaped diamond indenter. Devised in the 1920s by engineers at Vickers, Ltd., in the United Kingdom, the diamond …   Universalium

  • Diamond — Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone or gem… …   The Collaborative International Dictionary of English

  • Diamond beetle — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Diamond bird — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Diamond drill — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Diamond finch — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

  • Diamond groove — Diamond Di a*mond (?; 277), n. [OE. diamaund, diamaunt, F. diamant, corrupted, fr. L. adamas, the hardest iron, steel, diamond, Gr. ?. Perh. the corruption is due to the influence of Gr. ? transparent. See {Adamant}, {Tame}.] 1. A precious stone… …   The Collaborative International Dictionary of English

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