Compared to the traditional spherical zinc-rich primer will be gradually replaced, zinc flake powder shows better performance in the anti-corrosion nature and the better adhesive force, which makes it have been widely used in the heavy anti-corrosion equipment and marine painting industries.
| Grade | Average Particle Size D50 (μm) |
Thickness (μm) |
Water Covering (min cm²/g ±10%) |
Packaging (NW KG) |
|---|---|---|---|---|
| D100 | 17-19 | 0.15-0.4 | >3500 | 25 |
| D200 | 11-13 | 0.1-0.3 | >5000 | 25 |
| D200A | 9-11 | 0.1-0.2 | >6000 | 25 |
| D300 | 4-5 | 0.1-0.2 | >8000 | 25 |
| Grade | Average Particle Size D50 (μm) |
Thickness (μm) |
Water Covering (min cm²/g ±10%) |
Packaging (NW KG) |
|---|---|---|---|---|
| F100 | 17-19 | 0.2-0.5 | >3000 | 25 |
| F200 | 11-13 | 0.15-0.4 | >4000 | 25 |
| F300 | 4-5 | 0.1-0.3 | >7000 | 25 |
| N400 | 2-3 | 0.02-0.1 | >12000 | 20 |
Due to its laminated structure, zinc flake powder overlaps within the film to form a physical shielding barrier. This structure provides higher coverage, significantly enhanced corrosion resistance, and stronger adhesive force compared to standard spherical zinc particles.
Dacromet-grade powders (such as D100, D200, D200A, and D300) are primarily formulated for non-electrolytic zinc flake coatings, widely applied on automotive parts, wind energy fasteners, rail transit components, and construction hardware.
Smaller D50 values (e.g., N400 with 2-3 μm or D300 with 4-5 μm) deliver higher water covering area and a smoother surface finish, ideal for thin-film applications. Larger particles provide robust barrier thickness suitable for heavy-duty industrial anti-corrosion primers.
Water covering value (expressed in cm²/g) reflects the leafing capability and effective surface area of the flakes. Higher values indicate greater spreading efficiency, ensuring maximum protective barrier action with lower material consumption.
Most product grades are supplied in 25 kg net weight containers, while ultra-fine grades such as N400 are packaged in 20 kg net weight containers to preserve product integrity during transport and handling.
Yes, zinc flake powders are widely implemented in marine coatings and heavy industrial offshore equipment because their multi-layered barrier effectively prevents chloride and moisture penetration in harsh marine environments.
