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Abrasive Grains

As a kind of materials, abrasive grains can be distinguished in a variety of ways. They are classified as either natural or synthetic abrasives by manufacturing; either conventional or super abrasives by using history.Learn more

Glossary for Abrasive Grains

  • Abrasive Grains

    The individual grits of abrasive mineral, also called grit, or abrasive mineral.

  • Bulk Density

    Sometimes referred to as "density" or "loose packed density" (LPD). Weight (grams) per volume (cubic centimeters) of loose packed abrasive grain. Generally indicative of the grain shape.

  • Chemical Composition

    A chemical analysis of an abrasive.

  • Coarse

    Composed of comparatively large particles.

  • Coarse Grading

    Abrasive grain with too many large particles. A sieve analysis with too much material retained on the largest opening sieves in the specification.

  • Coarse Grits

    Generally particles extremely large for the abrasive grain size.

  • Fine

    Composed of comparatively small particles.

  • Fine Grading

    Abrasive grain with too many small particles as specified on a sieve analysis.

  • Grade

    Definition of size of abrasive grain.

  • Grain Size

    The nominal size of the abrasive particle expressed in grit number, e.g., 50 grit.

  • Grit

    Similar to grade.

  • Macrogrits

    Generally abrasive grain sizes coarser than 240 or 280 grits.

  • Mesh

    Generally interwoven wire screening used to sift or test abrasive grain. Sometimes wrongly used to describe abrasive grain size.

  • Microgrits

    Generally abrasive grain sizes finer than 220 or 240 grits.

  • Micro Inch

    A unit of measure of length equal to one millionth of an inch, smaller than a micron since one inch is approximately 1/39th of a meter.

  • Micron

    One millionth of a meter. Generally used to define average particles size of microgrits (powders).

  • Mixed Grits

    Generally a condition where two grit sizes are unintentionally mixed together.

  • Particle Size

    Average diameter of an abrasive grain.

  • Screen

    1) A sieve.
    2) A machine with screening surface(s) used to classify materials by size.

  • Screen Sizes

    Another term for macrogrits.

  • Sedimentation Sizes

    Another term for microgrits.

  • Sedimentometer

    A device for measuring particle size distribution using the time it takes a sample of material to settle a given distance, using Stokes Law.

  • Sieve

    Generally, interwoven mesh mounted on a frame and used for testing or sifting abrasive grain.

  • Sieve Sizes

    Another term for macrogrits.

  • Test Sieve

    A specially manufactured sieve used for testing particle size.

  • Toughness

    Resistance to abrading of abrasive grain.

  • Viscosity

    Resistance to abrading of abrasive grain.


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