(GEOMET / DACROMET / GEO-BLACK / etc.) Zinc-Flake Coatings – Quick Selection Guide 1) Summary Comparison Table Coating System Typical Types / Grades Appearance / Color Salt Spray (ISO 9227 NSS) Typical Thickness Topcoat Options Notes GEOMET 321 321, 321H, 321 Plus Silver-gray metallic 480-720 h (no red rust) 6-12 μm Organic lubricated topcoat optional … Continue reading Zinc-Flake Coatings – Quick Selection Guide