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  2. Hardness comparison - Wikipedia

    en.wikipedia.org/wiki/Hardness_comparison

    A variety of hardness-testing methods are available, including the Vickers, Brinell, Rockwell, Meyer and Leeb tests. Although it is impossible in many cases to give an exact conversion, it is possible to give an approximate material-specific comparison table for steels .

  3. Hardnesses of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Hardnesses_of_the_elements...

    Mohs hardness [1] Vickers hardness (MPa) [1] Brinell hardness (MPa) [1] Brinell hardness (MPa) [note 1] [2] 3: Li: lithium: 0.6: 5: 4: Be: beryllium: 5.5: 1670: 590 ...

  4. Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Vickers_hardness_test

    The Vickers hardness test was developed in 1921 by Robert L. Smith and George E. 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 hardness tests since the required calculations are independent of the size of the indenter, and the indenter ...

  5. Superhard material - Wikipedia

    en.wikipedia.org/wiki/Superhard_material

    Vickers test scheme An indentation left in case-hardened steel after a Vickers hardness test. The hardness of a material is directly related to its incompressibility, elasticity and resistance to change in shape. A superhard material has high shear modulus, high bulk modulus, and does not deform plastically. Ideally superhard materials should ...

  6. Brinell hardness test - Wikipedia

    en.wikipedia.org/wiki/Brinell_hardness_test

    If Meyer's index is greater than 2.2, then the ratio increases. [1] The Brinell hardness is designated by the most commonly used test standards (ASTM E10-14 [2] and ISO 6506–1:2005) as HBW (H from hardness, B from brinell and W from the material of the indenter, tungsten (wolfram) carbide). In former standards HB or HBS were used to refer to ...

  7. Talk:Vickers hardness test - Wikipedia

    en.wikipedia.org/wiki/Talk:Vickers_hardness_test

    The equation provided with the sin 1/2 136 seems to have unusual bracketing. The 136 im assuming has units of degrees, therefore would it not need to be encompassed by the sin term? thus sin (136/2) degrees? 129.78.64.106 06:53, 6 September 2006 (UTC) Would anyone be able to find some sample Vickers hardness values for typical materials?

  8. Critical points of the elements (data page) - Wikipedia

    en.wikipedia.org/wiki/Critical_points_of_the...

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  9. Leeb rebound hardness test - Wikipedia

    en.wikipedia.org/wiki/Leeb_rebound_hardness_test

    ASTM E140 - 12be1 "Standard Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Scleroscope Hardness, and Leeb Hardness" International standards: ISO/DIS 16859-1 "Metallic materials - Leeb hardness test - Part 1: Test method"