TECHNICAL NOTES
Every enquiry starts with one of these: which mesh, what profile, where the scratches come from, how to specify the bed. Each note below is the long version of the answer we give by email — with the numbers, the rules of thumb, and the point where the rule stops applying.
ALL NOTES
A mesh number only tells you the sieve cut. It says nothing about the distribution inside that cut, the grain shape, or how much oversize survived screening — which is why two suppliers can both ship “80 mesh” and cut very differently.
Read the note →Coating adhesion depends on two things the abrasive controls: cleanliness and profile. They are set by different parts of the specification, and pushing one usually costs you the other.
Read the note →Two polishing powders can share a D50 of 1.5 μm and behave nothing alike. One gives a clean mirror; the other produces scratches that only appear after the wipe. The difference lives in the coarse tail, and a D50-only specification hides it.
Read the note →Garnet is the heaviest media in the vessel, so it does two jobs at once: it filters the finest fraction and it holds the bed down. Get the grading or the backwash wrong and the bed mixes within a few cycles.
Read the note →QUICK REFERENCE
US sieve series; ISO 11127-1 and ISO 11126 use the same nominal openings. A supplier quoting “80 mesh” without a particle size distribution is quoting a sieve, not a product.
| Mesh | Opening (μm) | Typical D50 (μm) | Waterjet bore | Blasting profile |
|---|---|---|---|---|
| 30/36# | 600 / 500 | ~480 | — | 150–250 μm |
| 60# | 250 | ~230 | 0.030–0.040 in | 90–140 μm |
| 80# | 180 | ~165 | 0.030–0.040 in | 60–100 μm |
| 100# | 150 | ~140 | 0.030 in | 50–80 μm |
| 120# | 125 | ~115 | 0.030 in | 40–75 μm |
| 150# | 106 | ~95 | 0.020–0.030 in | 30–55 μm |
| 200# | 75 | ~65 | 0.020 in | 20–40 μm |
Typical values, not guaranteed. Coarse cuts are measured by sieve, 200# and finer by laser diffraction; the method is printed on every TDS.
Material, machine, target result: three lines are enough. Grade recommendation within 48 hours; standard grades in stock, samples in 3–5 working days.
Get a grade recommendation peter@ef-global.cn