Interseal 738 Epoxy Paint is an epoxy paint. Interseal 738 is easy to apply, has good resistance to transport and handling damage, and is suitable for application over hand-prepared steel. A two-component, low-VOC, high-solids epoxy paint containing aluminium pigment for enhanced corrosion protection. On hand-prepared steel, to achieve optimal performance, Interseal 738 should be used as a primer and applied by brush to ensure thorough wetting of the substrate. Parameters on this page: theoretical spreading rate 3.20 m²/L; number of components: two-component.
Parameter source: AKZONOBEL manufacturer's Technical Data Sheet (TDS) "Interseal 738 Epoxy Paint"; 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 | 80% |
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| Dry Film Thickness | — |
| Theoretical Spreading Rate | 3.20 m²/L |
| VOC | No metric value exists for VOC(UK-P… |
| Density / Specific Gravity | 1.40 kg/L (11.7 lb/gal) |
| Number of Components | Two-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 6.40 parts : 1.00 part (by volume) |
| Colour / Appearance | Aluminium and a limited range of other colours |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component, low-VOC, high-solids epoxy paint containing aluminium pigment for enhanced corrosion protection.
As an anticorrosive, high-build, self-priming intermediate coat or topcoat for steel protection in aggressive environments.
Interseal 738 is easy to apply, has good resistance to transport and handling damage, and is suitable for application over hand-prepared steel.
| Colour | Aluminium and a limited range of other colours. |
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INTERSEAL 738
| Gloss | Not applicable |
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| Volume Solids | 80% |
| Typical thickness | A dry film of 250 µm (10 mil) is equivalent to a wet film of 313 µm (12.5 mil) |
| Theoretical Spreading Rate | At 250 µm dry film thickness and the stated volume solids, 3.20 m²/L; at 10 mil dry film thickness and the stated volume solids, 128 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray and brush. Drying time: recommended topcoat overcoating interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 10°C (50°F) | 16 h | 72 h | 96 h | 14 days |
| 15°C (59°F) | 12 h | 48 h | 10 days | |
| 25°C (77°F) | 6 h | 24 h | 7 days | |
| 40°C (104°F) | 3 h | 16 h | 3 days | |
| Flash point (typical) | Component A 23°C (73°F); Component B 101°C (214°F); after mixing 23°C (73°F) |
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| Product weight | 1.40 kg/L (11.7 lb/gal) |
| Volatile Organic Compounds | No metric value exists for VOC(UK-PG6/23) g/L UK - PG6/23(04), Appendix 3 |
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
All surfaces to be coated must be clean, dry and free of contaminants. Before painting, all surfaces must be assessed and prepared in accordance with ISO 8504:2000.
Where required, remove weld spatter and grind welds and sharp edges smooth.
Abrasive blast cleaning to Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation occurs between abrasive blast cleaning and application of Interseal 738, the surface shall be re-blasted to the specified visual standard. Surface defects exposed by the blast cleaning process shall be ground, filled or otherwise treated in a suitable manner. Interseal 738 is suitable for application to surfaces blast cleaned to the above standard and then naturally degraded under good shop conditions for no more than 7 to 10 days. Surface quality may fall to Sa2, provided no loose powdery deposits are present.
Hand-prepared surfaces: hand or power tool cleaning to St2 (ISO 8501-1:2007) or SSPC SP2 minimum standard.
Note: all mill scale must be removed; areas that cannot be suitably prepared by chipping or needle gun must be spot blast cleaned to Sa 2 (ISO 8501-1:2007) or SSPC-SP6 minimum. This generally applies to rust grades C or D of this standard.
Welds and damaged areas of shop-primed substrates shall be blast-cleaned to Sa2½ (ISO 8501-1:2007) or SSPC SP6.
If the shop primer shows large-scale breakdown, the entire area must be blast cleaned.
| 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 | 6.40 parts : 1.00 part (by volume) |
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| Pot life | 10°C (50°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 8 h | 6 h | 4 h | 2 h |
| Suitable for airless spray | Recommended: nozzle diameter 0.53–0.65 mm (21–26 mil); total paint pressure at the nozzle not less than 197 kg/cm² (2801 psi). |
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| Air Spray | Not recommended (with pressure pot) |
| Brush | For small-area repair only | Typical thickness 100–125 µm (4.0–5.0 mil) |
| Roller application | Not recommended | |
| Thinner | International GTA220 | Do not exceed the thinning limits of local environmental regulations |
| Cleaner | International GTA822 |
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| 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.
On hand-prepared steel, to achieve the required performance, Interseal 738 should be applied as a primer by brush to ensure thorough wetting of the substrate.
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.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
This product does not cure adequately below 5 °C (41 °F). For optimum performance, curing should take place above 10 °C (50 °F).
Interseal 738 is not designed for continuous immersion in water.
As with all epoxy coatings, Interseal 738 will chalk and fade on exposure to atmospheric conditions. This phenomenon does not affect corrosion protection performance.
When Interseal 738 is applied as a recoat over zinc silicate primer, mist coating may be required in some cases to prevent pinholes. If necessary, thin with GTA220.
Product performance on steel prepared to St2 may not reach the performance achieved on surfaces prepared to Sa2½.
Interseal 738 is normally applied to suitably prepared substrates.
Suitable topcoats are: Intergard 410, Intergard 740, Interseal 738, Interthane 990. For other suitable primers/topcoats, consult International Paint.
| 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, consult International Paint.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 17.3 L | 20 L | 2.7 L | 5 L |
For other available packaging sizes, contact International Paint.
| Packaging Specifications | Component A | Component B |
| 20 L | 27.7 kg | 3.05 kg |
| Shelf life | At 25 °C (77 °F), a minimum of 24 months, after which the product shall be checked before use. Store in a dry, cool place away from heat sources and ignition sources. |
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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.
