ABRASIVE GRADING CONVERSION CHART
Steel abrasives are often measured in grit size indicating the number of particles in a specific area, whereas mesh sizes measure the particle size passing a woven wire screen.
Non-steel abrasives larger than 40 grit also use the direct pressure delivery blasting cabinets to pneumatically push the larger and heavier abrasives. Media Blast & Abrasive recommends the PowerPeen for these larger sizes.
Siphon abrasive blasting cabinets, i.e. the N-200 can also use steel type abrasives when the size is 80 grit and smaller. Normally a larger production gun is used to boost the siphon-feed of these larger/heavier abrasives.
(This chart is only a guideline. Consult abrasive manufacturer for model-specific information.)