Atmospheric Exposure
Extreme UV Exposure
Weathering and UV
Mild Chemical
Using SSPC Coating Material Standards
Table 1 SSPC Environmental Zones
| Zone No. | Characteristics of Service Environment |
| 1B | Exterior, normally dry. Coatings may be subject to exposure to sunlight. |
ISO 12944 Paints and varnishes — Corrosion protection of steel structures by protective paint systems — Part 5: Protective paint systems
C1 Very Low
C2 Low
C3 Medium
C4 High
C5-I Very High (Industrial)
SSPC Coating Standards
| SSPC-Paint 20 | Zinc-Rich Coating Inorganic and Organic |
| SSPC-Paint 36 | Two-Component Weatherable Aliphatic Polyurethane |
| SSPC-Paint 42 | Epoxy Polyamide/Polyamidoamine Primer |
Systems
Surface Preparation:
SSPC-SP 6/NACE No. 3 Commercial Blast Cleaning
Surface Profile: 1.0 – 3.0 mils
| Description | Generic Coating Type | Dry Film Thickness (mils) |
| Organic Zinc / Siloxane | Solvent Based Inorganic Zinc / Modified Siloxane Hybrid | 5 – 10 |
| Epoxy (1-2 coats) / Urethane | Polyamide Epoxy / Polyester Modified, Aliphatic, Acrylic Polyurethane | 8 – 16 |
| Epoxy (1-2 coats) / Urethane | Polyamidoamine Epoxy / Aliphatic, Acrylic Polyurethane | 8 – 16 |
JPCL – Journal of Protective Coatings & Linings https://www.paintsquare.com
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