┌──────────────┬─────────────────┬─────────────────┐ │ ISO 8502-3 │ Max particle (µm)│ Coating action │ │ Dust Class │ │ │ ├──────────────┼─────────────────┼─────────────────┤ │ 1 (Best) │ < 50 │ Proceed │ │ 2 (Good) │ 50–100 │ Proceed (unless │ │ │ │ immersed) │ │ 3 (Fair) │ 100–200 │ Clean surface │ │ 4 (Poor) │ 200–300 │ Re-blast │ │ 5 (Reject) │ > 300 │ Re-blast │ └──────────────┴─────────────────┴─────────────────┘
Dust and other contaminants on steel surfaces can significantly impact the adhesion and overall performance of coatings. The presence of dust can lead to coating failures, reduced lifespan, and increased maintenance costs. Therefore, assessing the dust level on steel surfaces is crucial to ensure the quality of coating applications. The ISO 8502-3 standard provides a systematic approach to evaluating the dust level, which helps to minimize the risk of coating failures. iso 85023 dust level chart pdf updated
A: Yes. ISO 85023 is a common typo. The correct number is ISO 8502-3 . The ISO 8502-3 standard provides a systematic approach
A: Re-blast the surface, then use compressed air and a vacuum brush. Retest until Class 1 is achieved. The correct number is ISO 8502-3