Interzinc 52E Epoxy Zinc-rich Primer is a zinc-rich primer, an epoxy coating system. A high-performance primer that, as part of an anti-corrosion coating system, provides ideal protection for various severely corrosive environments, including offshore structures, petrochemical plants, paper mills, bridges and power plants. A two-component, high-solids, fast-drying, fast-recoating epoxy zinc-rich primer whose composition complies with ISO 12944 Part 5. Over-application should be avoided as far as possible, as it affects the intercoat adhesion with the next film; dry spray should also be avoided to prevent pinholes in the next coat. Parameters on this page: dry film thickness 50–100 µm (2–4 mils), theoretical spreading rate 13 m²/L, components two-component.
Data source: AKZONOBEL original Technical Data Sheet (TDS), "Interzinc 52E Epoxy Zinc-rich Primer"; spreading rate and other values are converted from the TDS parameters, 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 | 65% |
|---|---|
| Dry Film Thickness | 50–100 µm (2–4 mils) |
| Theoretical Spreading Rate | 13 m²/L |
| VOC | 2.50 lb/gal (300 g/L) US EPA Method 24 14… |
| Density / Specific Gravity | 2.23 kg/L (18.6 lb/gal) |
| Number of Components | Two-component |
| Thinner | Normally no thinning is required |
| Mixing Ratio | 9 parts : 1 part (by volume) |
| Colour / Appearance | Grey, INTERZINC 52E |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, high-solids, fast-drying, fast-recoating epoxy zinc-rich primer whose composition complies with ISO 12944 Part 5. Interzinc 52E also complies with the composition and performance requirements of SSPC Paint 20.
The zinc powder of Interzinc 52E at least complies with ASTM D520 Type II
A high-performance primer that, as part of an anti-corrosion coating system, provides ideal protection for various severely corrosive environments, including offshore structures, petrochemical plants, paper mills, bridges and power plants.
Interzinc 52E is designed for new structures and provides them with excellent corrosion protection.
| Colour | Grey, INTERZINC 52E |
|---|---|
| Gloss | Matt |
| Volume Solids | 65% |
| Typical thickness | DFT 50–100 µm (2–4 mil) corresponds to WFT 77–154 µm (3.1–6.2 mil) |
| Theoretical Spreading Rate | 13 m²/L at 50 µm dry film thickness and the stated volume solids; 521 ft²/US gal at 2 mil dry film thickness and the stated volume solids |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, air spray, brush. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 45 min | 4 h | 3 h | Unlimited¹ |
| 10°C (50°F) | 30 min | 3 h | 2 h | Unlimited¹ |
| 25°C (77°F) | 15 min | 90 min | 45 min | Unlimited¹ |
| 40°C (104°F) | 15 min | 45 min | 30 min | Unlimited¹ |
¹ See the "Definitions and Abbreviations" of International Protective Coatings. When using polysiloxane or Chartek as the topcoat, the maximum overcoating interval will be shortened. For details, consult International Protective Coatings.
To ensure the long-term performance of the coating, before other materials are applied over Interzinc 52E, the surface must be thoroughly clean, dry and free of any white zinc salts.
| Flash point (typical) | Component A 28 °C (82 °F); Component B 32 °C (90 °F); mixed 31 °C (88 °F) |
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| Product weight | 2.23 kg/L (18.6 lb/gal) |
| Volatile Organic Compounds | 2.50 lb/gal (300 g/L) US EPA Method 24 143 g/kg EU Solvent Emissions Directive content 2010 Commission Directive No. 75 298 g/L Korea Clean Air Conservation Act. Coating hazard GB 30981.2-S-Pb≤1000-NC, complies with GB 30981.2-2025. For more details, see the "Product Characteristics" section |
All surfaces to be coated must be clean and free of contamination. 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.
Blast clean to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation occurs between blast cleaning and application of Interzinc 52E, the surface shall be re-blasted to the specified visual standard.
Surface defects exposed by abrasive blasting must be ground, filled or treated by another suitable method.
A jagged surface roughness of 40–75 µm (1.6–3.0 mils) is recommended.
Steel structures pre-primed with shop primer: Interzinc 52E can be applied on sweep-blasted zinc powder shop primer.
Welds and damaged areas shall be prepared to at least St3 (ISO 8501-1:2007) or SSPC-SP3. Blast cleaning to Sa2½ (ISO 8501-1:2007) or SSPC-SP6 gives optimum performance. If this cannot be achieved, power-tool cleaning to SSPC-SP11 is recommended.
| Mixing | This product is supplied in two containers forming one unit. Mix the two components in the specified ratio in one operation. 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 | 9 parts : 1 part (by volume) |
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| Pot life | 5°C (41°F) | 10°C (50°F) | 25°C (77°F) | 40°C (104°F) |
| 4 h | 90 min | 75 min | 30 min |
| Suitable for airless spray | Recommended: nozzle diameter 0.43–0.53 mm (17–21 thousandths of an inch); total paint pressure at the 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) | Spray painting | E | |
| Brush | Suitable | Usually achieves 2.0–3.0 mil (50–75 microns) | |
| Roller application | Not recommended | ||
| Thinner | International GTA220. | Normally no thinning is required. |
In extreme cases, consult the local technical representative.
Do not thin beyond the requirements of local environmental regulations.
| Cleaner | International GTA220. Please select a cleaning agent that complies with local regulations. For specific usage recommendations, consult the local representative. |
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| Interruption of work | Do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with International thinner. |
Once 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 thinner. 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. |
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All surplus paint and empty containers must be disposed of in accordance with the relevant local laws/regulations.
To ensure good corrosion protection, the minimum dry film thickness of Interzinc 52E must reach 50 µm (2 mils).
The film thickness of Interzinc 52E must match the surface roughness obtained during surface preparation. Rough surfaces should not be coated with thin films.
Care shall be taken to avoid applying a dry film thickness above 150 µm (6 mil).
Over-thick application shall be avoided, as it affects intercoat adhesion with the next coat; dry spray shall also be avoided to prevent pinholes in the next coat. Over-thick application also slows curing and extends handling and overcoating times.
Excessive application of Interzinc 52E prolongs the minimum overcoating and handling times, adversely affecting long-term overcoating performance.
When Interzinc 52E is allowed to weather before topcoat application, all zinc salts shall be removed before painting, and only recommended materials shall be used for the topcoat.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
It is recommended not to use Interzinc 52E underwater. Consult International Protective Coatings for details in this regard.
Note: VOC values are typical and for guidance only. They may vary with colour and general production 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 52E is usually applied directly on blast-cleaned and clean steel surfaces.
Recommended topcoats/intermediate coats:
| Interfine 979 | Interseal 670HS |
|---|---|
| Intergard 251HS | Interthane 990 |
| Intergard 269 | Interthane 990E |
| Intergard 345 | Interzone 954 |
| Intergard 475HS | Interzone 1000. For other suitable topcoats, consult International Paint 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 also available as separate publications on request. |
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This product must be applied at the production site by professional applicators in accordance with the recommendations in this manual, the Material Safety Data Sheet and the instructions on the container label. 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 for the intended use, consult AkzoNobel for further advice.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 10 L | 9 L | 10 L | 1 L | |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 10 L | 22.5 kg | 1.1 kg |
| Shelf life | 12 months at 25 °C (77 °F). Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition. |
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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.
The factory product codes of Interzinc 52E Epoxy Zinc-rich Primer are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| EPA824 | Grey | 9 L + 1 L |
This model has a total of1item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
