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  2. Mohs scale - Wikipedia

    en.wikipedia.org/wiki/Mohs_scale

    Mohs hardness kit, containing one specimen of each mineral on the ten-point hardness scale. The Mohs scale (/ m oʊ z / MOHZ) of mineral hardness is a qualitative ordinal scale, from 1 to 10, characterizing scratch resistance of minerals through the ability of harder material to scratch softer material.

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

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

    Mohs scale of mineral hardness; Mohs hardness of materials (data page) Vickers hardness test; Brinell scale This page was last edited on ...

  4. List of mineral tests - Wikipedia

    en.wikipedia.org/wiki/List_of_mineral_tests

    The Mohs Hardness Scale is the main scale to measure mineral hardness. Finger nail is 2.5, copper coin is 3.5, glass is 5.5 and steel is 6.5. Hardness scale is Talc is 1, Gypsum is 2, Calcite is 3, Fluorite is 4, Apatite is 5, Orthoclase Feldspar is 6, Quartz is 7, Topaz is 8, Corundum is 9 and Diamond is 10. Odor; Not always recommended.

  5. Scratch hardness - Wikipedia

    en.wikipedia.org/wiki/Scratch_hardness

    Mohs's scale had two limitations: it was not linear, and most modern abrasives fall between 9 and 10.; [6] [7] so, later scientists attempted to increase resolution at the harder end of the scale. Raymond R. Ridgway, a research engineer at the Norton Company, modified the Mohs scale by giving garnet a hardness of 10 and diamond a hardness of 15.

  6. Hardness scales - Wikipedia

    en.wikipedia.org/wiki/Hardness_scales

    The Mohs scale of mineral hardness; The Vickers hardness test; ... Hardness scales may also refer to: Methods of measuring the deposit formation by hard water.

  7. 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 .

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  9. Talk:Mohs scale - Wikipedia

    en.wikipedia.org/wiki/Talk:Mohs_scale

    It is 2010 now and the 'Absolute Hardness' sticks out as incomplete. It is worse than mentioning a temperature of 620° (Celsius or Fahrenheit your guess). Where Kelvin has something absolute for temperatures, Mohs scale is as much absolute as any other hardness scale. Elegast 15:01, 24 June 2010 (UTC) 2024 now and this is silly.

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