What mesh size for marine deck coating?

100 to 150 micrometer at 20% loading gives good anti-slip in wet conditions without being uncomfortable underfoot. We supply a special marine grade blend optimized for this application.

Does alumina affect coating color?

Pure alumina is white. It does not affect color in white or pastel coatings but may require pigment adjustment in dark or saturated colors due to its high reflectance.

Is alumina FDA-approved for food contact coatings?

Yes. Our food-contact grade meets FDA 21 CFR 175.300 for coatings in contact with aqueous and fatty foods. Common in can linings and food processing equipment.

What is the price for coating-grade alumina?

$1,800 to $2,500 per MT depending on mesh size and surface treatment. Silane-treated grades are 30 to 40% higher than untreated.

Can I use alumina with water-based coatings?

Yes, but pre-dispersion is more critical. Use a dispersing agent (e.g., DISPERBYK-192) and avoid high shear that can entrap air.

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