Interzone 505 Glass Flake Epoxy Coating belongs to glass flake coatings, epoxy coating system. For the protection of steel structures in various corrosive environments, including: splash zones of offshore structures, under-deck, deck and above-water areas, pile structures, paper mills, bridges and chemical plants. High-solids, low-VOC, high-build epoxy primer/intermediate coat or topcoat, reinforced with a high proportion of chemically resistant glass flakes to enhance durability and corrosion resistance. When Interzone 505 is applied by brush or roller, multiple coats are necessary to achieve the specified total system dry film thickness. Parameters on this page: dry film thickness 300–500 µm (12–20 mil), theoretical spreading rate 2.25 m²/L.
Parameter source: AKZONOBEL manufacturer's Technical Data Sheet (TDS) "Interzone 505 Glass Flake Epoxy Coating"; values such as spreading rate are converted from TDS parameters and are for product 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 | 90% |
|---|---|
| Dry Film Thickness | 300–500 µm (12–20 mil) |
| Theoretical Spreading Rate | 2.25 m²/L |
| VOC | 1 .71 lb/gal (205 g/L) US Environmental Protection Agency Method 24 1… |
| Density / Specific Gravity | 1.29 kg/L (10.8 lb/gal) |
| Number of Components | — |
| Thinner | Normally no thinning is required |
| Mixing Ratio | 1.5 parts : 1 part (by volume) |
| Colour / Appearance | Limited range, INTERZONE 505 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A high-solids, low-VOC, high-build epoxy primer/intermediate coat or topcoat, reinforced with a high proportion of chemical-resistant glass flake for enhanced durability and corrosion resistance.
For the protection of steel structures in various corrosive environments, including splash zones of offshore structures, under-deck, deck and above-water areas, piling, paper mills, bridges and chemical plants.
Provides long-term corrosion and abrasion protection for new construction and maintenance.
Use with a suitable aggregate as part of a non-skid deck coating system.
| Colour | Limited range, INTERZONE 505 |
|---|---|
| Gloss | Semi-gloss |
| Volume Solids | 90% |
| Typical thickness | Dry film thickness 300–500 µm (12–20 mil) corresponds to wet film thickness 333–556 µm (13.3–22.2 mil) |
| Theoretical Spreading Rate | At 400 µm dry film thickness and the stated volume solids, 2.25 m²/L; at 16 mil dry film thickness and the stated volume solids, 90 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) | 20 h | 28 h | 7 days¹ | |
| 15°C (59°F) | 6 h | 14 h | 5 days¹ | |
| 25°C (77°F) | 3 h | 6 h | 4 days¹ | |
¹ When polysiloxane topcoats are used, the maximum recoat interval is reduced. For details, consult International Paint.
For high-temperature curing, other curing agents are available. For details, contact International Paint.
| Flash point (typical) | Component A 54°C (129°F); Component B 33°C (91°F); mixed 35°C (95°F) |
|---|---|
| Product weight | 1.29 kg/L (10.8 lb/gal) |
| Volatile Organic Compounds | 1.71 lb/gal (205 g/L) US EPA Method 24; 164 g/kg EC Solvent Emissions Directive content (Council Directive 2010/75/EU); 124 g/L China National Standard GB 23985; coating hazard GB 30981.2-S-Pb≤1000-NC; complies with GB 30981.2-2025. For more detailed information, see the "Product Characteristics" section. |
The performance of the product depends on the degree of surface preparation. The surface to be coated shall be clean, dry and free from contamination. Before painting, all surfaces shall be assessed and prepared in accordance with ISO 8504:2000.
Accumulated dirt and soluble salts must be removed. Accumulated dirt is generally best removed with a dry bristle brush. Soluble salts should be removed by fresh water washing.
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 Interzone 505, the surface shall be reblast 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 50–75 µm (2–3 mils).
Ultra-high-pressure water jetting/wet blasting may be applied over surfaces prepared to Sa2½ (ISO 8501-1:2007) or SSPC SP6, with flash rust allowed to a standard not lower than HB2½M (see the International Paint hydroblasting standard) or SB2½M (see the International Paint slurry blasting standard). In some cases, application over damp surfaces is possible. For more information, contact International Paint.
| 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 | 1.5 parts : 1 part (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) |
| 2.5 h | 90 min | 60 min |
| Suitable for airless spray | Recommended nozzle diameter 0.53–0.79 mm (21–31 mil); total paint pressure at the nozzle not less than 211 kg/cm² (3000 psi) |
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| Air Spray | Recommended | Spray gun | DeVilbiss MBC or JGA |
| Air nozzle | 62 | ||
| (with pressure pot) | Nozzle | AC | |
| Brush | Applicable — for small-area repair only | Typical thickness 75–100 µm (3.0–4.0 mils) | |
| Roller application | Applicable — for small-area repair only | Typical thickness 75–100 µm (3.0–4.0 mils) | |
| Thinner | International GTA220 | Normally no thinning is required. |
(or International. In extreme cases, consult the local technical representative.
GTA415). Do not thin beyond the requirements of local environmental regulations.
| 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 thinner. 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. |
Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
Interzone 505 is suitable for immersion service and outdoor atmospheric exposure. For immersion service, a minimum coating system thickness of 450 µm (18 mil) is required to achieve long-term corrosion protection. For general outdoor atmospheric corrosive environments, a minimum coating system thickness of 350 µm (14 mil) is required.
If salt water is used during wet abrasive blasting, the treated surface must be thoroughly washed with fresh water before Interzone 505 is applied. Light rust bloom on freshly blasted surfaces is acceptable and preferable to an excessively damp surface. Pools, dead water and standing water must be removed.
Apply by airless spray to achieve the maximum film thickness per coat. Application methods other than airless spray cannot achieve the required film thickness. With air spray, several cross coats are required to achieve the maximum film thickness. At low or high temperatures, special application techniques may be required to achieve the maximum film thickness.
For airless spray application, satisfactory results are obtained with 9 mm (3/8 in) hose without a whip end. The minimum pump ratio shall be 45:1. Filters shall be removed from the spray unit and gun, and fluid lines shall be kept as short as possible.
When long fluid lines are used, a high-ratio pump is recommended.
When Interzone 505 is applied by brush or roller, multiple coats are necessary to achieve the specified total system dry film thickness.
In special cases, if overcoating is required and the film has cured under low-temperature, high-humidity conditions, ensure no amine salts are present before applying the next topcoat.
This product does not cure adequately below 5 °C (41 °F). For optimum performance, curing should take place above 10 °C (50 °F).
The surface temperature must always be maintained at least 3 °C (5 °F) above the dew point.
Ensure adequate ventilation when applying Interzone 505 in confined spaces.
Condensation on the surface during or after application results in a flat finish and a poor-quality film. Premature exposure to standing water causes colour change, particularly in dark colours.
The Interzone 505 film is suitable for immersion in water after 24 h of curing at an ambient temperature of 25°C (77°F) or above.
Underwater curing is slower. Some colour changes may occur.
For details of curing times and recoatability, contact International Paint.
When applied on a specific structure, alternating use of the standard hardener and the high-temperature hardener causes significant colour variation, because the epoxy resin yellows and fades on exposure to ultraviolet light.
As with all epoxy coatings, Interzone 505 will chalk and fade on exposure to the atmosphere. This phenomenon does not affect corrosion protection performance.
For durable decorative surfaces requiring good gloss and colour retention, overcoat with the recommended topcoat.
Modified with GMA 132 (crushed flint) aggregate, Interzone 505 can be used as a non-slip deck coating system, applied over a suitably primed surface. Typical thickness is between 500–1000 µm (20–40 mil). Application should be carried out with a suitable large-nozzle spray gun (e.g. Sagola 429 or an air spray gun with a 5–10 mm nozzle). Small areas may be applied by trowel or roller. Alternatively, the broadcast technique may be used. For details, consult International Paint Industrial Coatings.
Interzone 505 is compatible with sacrificial anode and impressed current cathodic protection systems.
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.
Interzone 505 can be applied directly to blasted steel, but may also be applied over the following primers for underwater coating systems:
| Intergard 269 | Interline 982. When used in corrosive atmospheric environments, the following primers are recommended for Interzone 505: |
|---|---|
| Intercure 200 | Interzinc 52 |
| Intergard 251 | Interzinc 315 Interzinc 22 *(a mist coat or tie coat may be required). The following topcoats are recommended for use with Interzone 505: Interfine 629HS Interthane 990. For other suitable primers/topcoats, consult International Paint Industrial Coatings. |
For details, see the relevant product data sheet
| 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 | |
| 20 L | 10.5 L | 20 L | 7 L | 10 L |
| 5 US gal | 3 US gal | 5 US gal | 2 US gal | |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 20 L | 16.75 kg | 8.76 kg |
| 5 US gal | 33.9 lb | 18.3 lb |
| Shelf life | At least 12 months at 25 °C (77 °F). |
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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.
Factory part numbers for Interzone 505 glass flake epoxy coating 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 |
|---|---|---|
| EGA873 | — | 20 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.
