Grain Size

Definition - What does Grain Size mean?

Grain size is a term used to compare solid, liquid and gas dimensions. Grain size can be applied to any of the following:

  • Ecology particles
  • Colloidal particles
  • Granular material particles

An object's spherical size can be defined quantitatively and unambiguously by its diameter. However, many objects are likely to be nonspherical, so the grain size can alternatively be based upon the object's volume, area or weight.

Grain size may also be known as particle size.

Corrosionpedia explains Grain Size

Grain size is known to have a significant influence on corrosion. Grain or particle refinement is a technique used to improve a material's wear resistance and strength. Material processing can modify both the surface and the bulk of materials, resulting in changes to the density of grain boundaries, and residual stress and orientation.

These changes to the surface can affect the material's electrochemical behavior, which could eventually increase the risk of corrosion. The physical and chemical properties of materials can be better understood with grain size analysis.

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