Thread: Micron in grits

Hello all

How does Microns convert into grit? (3 micron= how much grit, etc.)

thanks.

....Try this:

Well, thanks, it was all that I needed

I think there are differing opinions and no internationally recognized measure related to grit size. Shapton, unlike the Norton PDF linked above differs in its micron to grit. Example: The 30000 shapton plate is 0.49 micron.

Hand American advertises its Chromium Oxide .5 micron powder at 60000 grit.



Chris L

Yes - a micron is a micron, but even that is subject to variability because of where the measurement is taken and non-uniformity in the particulates, I imagine.

From what I understand of grit, you can have maximum, minimum, average etc. number of particulates per square (or cubic?) mm. And the shape and configuration of the particulates can also determine how many can fit together. And the type of medium they are held in can also have an effect, I would think.

So it's not surprising that different manufacturers have different grit ratings. Ballpark is probably the easiest way to view this stuff.

James.