The different grades of sandpaper

@zaveri-5TD6Sk • Oct 26, 2024

Oct 26, 2024

1.4K

sand papers or emery sheets are available in various grades, designated by numbers.

they start from 80 and go up to 1000.

now what i want to know is what do these different numbers signify.

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Ramani Aswath

@ramani-VR4O43 • Dec 7, 2012

The number refers to the mesh size of the abrasive.
80 grade will have the abrasive powders of size 80 mesh. This table gives equivalents.
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zaveri

@zaveri-5TD6Sk • Dec 7, 2012

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which means that the grains of 80 mesh are bigger in size than the grain of the 1000 mesh grain ?

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Ramani Aswath

@ramani-VR4O43 • Dec 7, 2012

zaveri
#-Link-Snipped-#which means that the grains of 80 mesh are bigger in size than the grain of the 1000 mesh grain ?
Right. Much bigger.
The number refers to the number of holes per linear inch of the mesh. You also have to account for the size of the wires forming the mesh, all of which means that the size is related to (actually less than) 25.4/(grit size) mm.

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