Interzinc 52HS High Performance Primer belongs to zinc-rich primers. This is a high performance primer that, as part of an anticorrosive coating system, provides ideal protection in various severe corrosive environments, including: offshore steel structures, petrochemical plants, bridges and power plants. A two-component, high solids, low VOC, fast-curing epoxy zinc-rich primer that meets the composition and performance requirements of SSPC Paint 20. Although low molecular weight reactive additives become part of the film when cured under normal ambient conditions, they also affect the VOC value as determined by EPA Method 24 analysis. Parameters on this page: theoretical spreading rate 9.70 m²/L, number of components two-component.
Parameter source: AKZONOBEL original technical data sheet (TDS) “Interzinc 52HS High Performance Primer”; values such as spreading rate are converted according to TDS parameters and are for selection reference only.
The above content is compiled from the manufacturer's datasheet and this site's parameter tables. For selection, coating systems and lead times, pleaseContact Usfor confirmation.
This page carries the full TDS for this product, translated from the manufacturer's original document. No file download is needed; for an original-language copy, send an enquiry.
| Volume Solids | 73% |
|---|---|
| Dry Film Thickness | — |
| Theoretical Spreading Rate | 9.70 m²/L |
| VOC | 2.07 lb/gal (249 g/L) US EPA Method 24 84… |
| Density / Specific Gravity | 3.06 kg/L (25.5 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not thin beyond the limits of local regulations |
| Mixing Ratio | 4 parts : 1 part (by volume) |
| Colour / Appearance | Green, INTERZINC 52HS |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, high solids, low VOC, fast-curing epoxy zinc-rich primer that meets the composition and performance requirements of SSPC Paint 20.
This is a high performance primer that, as part of an anticorrosive coating system, provides ideal protection in various severe corrosive environments, including: offshore steel structures, petrochemical plants, bridges and power plants.
Fast curing and the recoatability of Interzinc 52HS provide application convenience, suitable for new construction and maintenance projects.
| Colour | Green, INTERZINC 52HS |
|---|---|
| Gloss | Matt |
| Volume Solids | 73% |
| Typical thickness | 75 µm (3 mil) dry film equivalent to 103 µm (4.1 mil) wet film |
| Theoretical Spreading Rate | At 75 µm dry film thickness and the stated volume solids, 9.70 m²/L; at 3 mil dry film thickness and the stated volume solids, 390 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, air spray, brush, roller. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 60 min | 6 h | Unlimited¹ | |
| 15°C (59°F) | 40 min | 4 h | Unlimited¹ | |
| 25°C (77°F) | 30 min | 3 h | Unlimited¹ | |
| 40°C (104°F) | 20 min | 2 h | Unlimited¹ | |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division. When polysiloxane topcoats are used, the maximum recoat interval is reduced. For details, consult International Paint.
| Flash point (typical) | Component A 30 °C (86 °F); Component B 27 °C (81 °F); Mixed 29 °C (84 °F) |
|---|---|
| Product weight | 3.06 kg/L (25.5 lb/gal) |
| Volatile Organic Compounds | 2.07 lb/gal (249 g/L) US EPA Method 24 84 g/kg EC Solvent Emissions Directive Content Council Directive 1999/13/EC For further details, see the section on "Product Characteristics" |
All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000.
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
Abrasive blast cleaning to Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation occurs between blast cleaning and application of Interzinc 52HS, the surface shall be re-blast cleaned to the specified visual standard.
Surface defects exposed by abrasive blasting must be ground, filled or treated by another suitable method.
Recommended surface roughness 40–75 µm (1.5–3.0 mils).
Shop-primed steel structures Interzinc 52HS is suitable for steel components freshly coated with zinc silicate shop primer.
If the zinc shop primer shows extensive large-scale breakdown or heavy zinc salts, full sweep blasting is required. Other types of shop primer are not suitable for recoating and must be removed completely by blasting.
Welds and damaged areas must be blast cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6.
| Mixing | This product is supplied in two containers as one unit. Always mix the entire unit in the specified ratio. Once mixed, use within the specified pot life. |
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(1) Stir the base (Component A) with a power mixer. (2) Mix all of the curing agent (Component B) with the base (Component A) and stir thoroughly with a power mixer.
| Mixing ratio | 4 parts : 1 part (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 4 h | 2 h | 90 min | 30 min |
| Suitable for airless spray | Recommended nozzle tip size 0.43–0.48 mm (17–19 mil) Total pressure at nozzle not less than 176 kg/cm² (2503 psi) |
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| Air Spray | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 704 or 765 | ||
| (with pressure pot) | Nozzle | E | |
| Brush | Applicable — for small-area repair only | Typical thickness 50–75 µm (2.0–3.0 mils) | |
| Roller application | Applicable — for small-area repair only | Typical thickness 50–75 µm (2.0–3.0 mils) | |
| Thinner | International GTA220 | Do not thin beyond the limits of local regulations. |
(or International GTA415)
| Cleaner | International GTA822 (or International GTA415) |
|---|---|
| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International GTA822. Mixed paint should not be resealed; if work is interrupted for too long, mix a fresh batch for application. |
| Cleaning | All equipment should be cleaned immediately after use with International GTA822. Flushing spray equipment periodically during daily work is good practice. Cleaning frequency depends on the volume sprayed, temperature, spraying time, including interruptions, and other factors. |
Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
To ensure good corrosion resistance, a minimum dry film thickness of 50 µm (2 mil) of Interzinc 52HS must be achieved. To obtain a uniform, cohesive and sealed film at this dry film thickness, Interzinc 52HS must be thinned with 5% of the recommended thinner. The film thickness of Interzinc 52HS applied must be compatible with the blast profile obtained during surface preparation. Low film thickness shall not be applied over surfaces with a heavy blast profile.
This product must be thinned only with the recommended International thinner. Other thinners, especially those containing ketones, severely inhibit the curing of the coating.
Care shall be taken to avoid applying a dry film thickness above 150 µm (6 mil).
Avoid over-thick application; if the film is too thick, cracking may result from cohesive failure. Dry spray shall also be avoided, otherwise pinholes will appear.
Over-application of Interzinc 52HS will extend the minimum recoat time and handling time and adversely affect long-term recoatability.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Interzinc 52HS can cure below 0 °C (32 °F). However, the product shall not be applied at 0 °C (32 °F) due to possible icing on the substrate.
Interzinc 52HS is not recommended for underwater use. Consult International Protective Coatings for details in this respect.
Where Interzinc 52HS is permitted to weather before topcoating, all zinc salts shall be removed prior to painting, and topcoats shall be applied using only the recommended materials.
Interzinc 52HS is suitable for local repair of damaged inorganic zinc primers — consult International Protective Coatings for specific recommendations.
This product is approved to the following specifications: • Steel Structures Painting Council — SSPC Paint 20, Type II Note: VOC values are typical and are provided for guidance purposes only. The value may vary depending on colour differences and normal manufacturing tolerances.
Although the low-molecular-weight reactive additive becomes part of the film when cured under normal ambient conditions, analysis by EPA Method 24 shows that it also affects the VOC value.
Interzinc 52HS is designed for application to suitably prepared steel and may also be applied to approved shop primers. Details in these respects are available from International Protective Coatings.
Recommended topcoats:
| Intercryl 530 | Intercure 200HS |
|---|---|
| Intercure 420 | Intercure 420HS |
| Interfine 629HS | Interfine 979 |
| Intergard 269 | Intergard 345 |
| Intergard 400 | Intergard 475HS |
| Intergard 740 | Interseal 670HS |
| Interthane 870 | Interthane 990 |
| Interzone 505 | Interzone 954 For other suitable topcoats, consult International Protective Coatings. |
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | In the following documents on the website: • Definitions and abbreviations • Surface preparation • Coating application • Theoretical and practical spreading rate. These sections are available on request. |
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This product is intended for application only by professional applicators in the industrial sector, in accordance with the recommendations in this manual, the Material Safety Data Sheet and on the container packaging. Do not use this product without first reviewing the Material Safety Data Sheet (MSDS) that International Paint provides for its customers.
All work related to the application and use of this product must be carried out in accordance with the relevant national health, safety and environmental standards and regulations.
If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; use appropriate personal protective equipment and adequate local ventilation.
If in doubt about the suitability of this product, consult International Paint.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 10 L | 8 L | 10 L | 2 L | 3.7 L |
| 1 US gal | 0.8 US gal | 1 US gal | 0.2 US gal | 0.25 US gal |
For other available packaging sizes, contact International Paint.
| Packaging Specifications | Component A | Component B |
| 10 L | 30.3 kg | 2.4 kg |
| 1 US gal | 24.7 lb | 1.9 lb |
| Shelf life | At 25 °C (77 °F), at least 6 months, after which inspection is required. Store in a dry, cool place away from heat sources and ignition sources. |
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All registered trademarks mentioned in this publication are licensed to or owned by AkzoNobel.
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Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
