Interzinc 315B High-performance Primer is a zinc-rich primer. As a high-performance primer forming part of an anti-corrosion coating system, it provides greater protection for aggressive environments, including bridges, offshore facilities, petrochemical plants, pulp and paper mills and power plants. Interzinc 315B complies with SSPC Paint 20 and contains at least 80% zinc dust in the dry film. Although the low-molecular-weight reactive additive becomes part of the film on curing under normal ambient conditions, EPA Method 24 analysis shows that it also affects the VOC value. Parameters on this page: dry film thickness 50–150 µm (2–6 mil), theoretical spreading rate 9.10 m²/L, number of components three.
Source: AkzoNobel original technical data sheet (TDS) "Interzinc 315B High-performance Primer"; spreading rate and other values are converted from 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 | 68% |
|---|---|
| Dry Film Thickness | 50–150 µm (2–6 mil) |
| Theoretical Spreading Rate | 9.10 m²/L |
| VOC | 2.42 lb/gal (290 g/L) US EPA Method 24, regarding… |
| Density / Specific Gravity | 3.26 kg/L (27.2 lb/gal) |
| Number of Components | Three-component |
| Thinner | Do not exceed the thinning limits of local environmental regulations |
| Mixing Ratio | 1.9 parts : 0.71 parts : 1.43 parts (by volume) |
| Colour / Appearance | Green, red, INTERZINC 315B |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A three-component epoxy zinc-rich primer achieving Class B slip coefficient. Interzinc 315B complies with SSPC Paint 20 and contains at least 80% zinc dust in the dry film.
The zinc dust used in the product complies with ASTM D520 Type II.
As a high-performance primer forming part of an anti-corrosion coating system, it provides greater protection for aggressive environments, including bridges, offshore facilities, petrochemical plants, pulp and paper mills and power plants.
Interzinc 315B is designed to provide excellent corrosion protection for maintenance and new construction.
| Colour | Green, red, INTERZINC 315B |
|---|---|
| Gloss | Matt |
| Volume Solids | 68% |
| Typical thickness | Dry film 50–150 µm (2–6 mil), equivalent to wet film 74–221 µm (3–8.8 mil) |
| Theoretical Spreading Rate | At 75 µm dry film thickness and the stated volume solids, 9.10 m²/L; at 3 mil dry film thickness and the stated volume solids, 364 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Airless spray, air spray, brush. Drying time; recommended topcoat recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 0°C (32°F) | 15 h | 30 h | Unlimited¹ | |
| 5°C (41°F) | 1 h | 7 h | Unlimited¹ | |
| 15°C (59°F) | 40 min | 4 h | Unlimited¹ | |
| 25°C (77°F) | 30 min | 3 h | 30 min | Unlimited¹ |
| 40°C (104°F) | 15 min | 1.5 h | 30 min | Unlimited¹ |
¹ See Definitions and Abbreviations from the International Paint Protective Coatings division.
| Flash point (typical) | Component A 29 °C (84 °F); Component B 25 °C (76 °F); mixed 29 °C (84 °F) |
|---|---|
| Product weight | 3.26 kg/L (27.2 lb/gal) |
| Volatile Organic Compounds | 2.42 lb/gal (290 g/L) US EPA Method 24. For more details, see the 'Product Characteristics' section. |
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: blast steel surfaces to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation occurs between blasting and application of Interzinc 315B, re-blast to the specified visual standard.
Surface defects exposed by blast cleaning must be ground, filled or treated by a suitable method.
Recommended surface roughness 50–75 µm (2–3 mils).
Shop-primed steel: Interzinc 315B is suitable for steel members 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 as a kit of three containers. Mix the entire kit in one operation at the specified ratio each time, and use within the specified pot life. |
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(1) Stir component A, then combine all of component A and component B and stir thoroughly with a power stirrer.
(2) Slowly add component C (the powder component) to the thoroughly stirred components A and B, while stirring with a power stirrer.
(3) Strain the paint, and stir the paint in the container frequently during spraying.
| Mixing ratio | 1.9 parts : 0.71 parts : 1.43 parts (by volume) |
|---|
| Pot life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 8.5 h | 5 h | 3 h | 1 h |
| 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) | Nozzle | E | |
| Brush | Applicable — for small-area repair only | Typical thickness 50–75 µm (2.0–3.0 mils) | |
| Roller application | Not recommended | ||
| Thinner | International GTA415 | Do not exceed the thinning limits of local environmental regulations |
| Cleaner | International GTA415 |
|---|---|
| Interruption of work | Do not allow paint to remain in paint lines, spray guns or spray equipment. Flush all equipment thoroughly with International GTA415. The paint should not be re-sealed after mixing. If the work interruption is long, use freshly mixed paint when resuming. |
| Cleaning | Clean all equipment with International GTA415 immediately after use. |
Periodic flushing of spray equipment during application is also recommended. Cleaning frequency depends on spray volume, temperature and time, including all interruption periods.
Surplus paint and empty containers must be disposed of in accordance with the relevant local regulations.
The applied film thickness of Interzinc 315B must match the blast roughness obtained from surface preparation.
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-thick application of Interzinc 315B extends the minimum recoat and handling times, adversely affecting long-term recoatability.
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
Interzinc 315B is not recommended for underwater use.
Interzinc 315B is suitable for local repair of damaged inorganic zinc primers – consult International Paint for specific advice.
Interzinc 315B is approved as the primer for the following systems: Interzinc 315B, Intergard 475HS, Interthane 870UHS.
Note: the VOC value given is based on the maximum possible value for the product and 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 315B is designed for application on suitably prepared steel, and may also be applied over approved pre-construction primers. Details are available from International Paint.
Recommended topcoats:
| Intergard 345 | Intergard 475HS |
|---|---|
| Interseal 670HS | Interthane 870 |
| Interthane 870UHS | Interthane 990 |
| Interthane 990FD | Interthane 990HSInterzone 954 |
| 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 | Component C | |||
| Volume | Packaging | Volume | Packaging | Volume | Packaging | |
| 4 US gal | 1.9 US gal | 5 US gal | 0.7 US gal | 1 US gal | 1.4 US gal | 5 US gal |
For other available packaging sizes, contact International Paint.
| Packaging Specifications | Component A | Component B | Component C |
| 4 US gal | 23.8 lb | 6.2 lb | 84.6 lb |
| Shelf life | At least 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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The information given in this product data sheet is not exhaustive. Anyone who uses, for any purpose, any product other than those specifically recommended in this data sheet without first obtaining our written confirmation does so at their own risk as regards the suitability of the product for the intended purpose. Although to the best of our knowledge all advice or statements given about the product (whether in this data sheet or otherwise) are correct, we cannot control the quality or condition of the substrate, nor the many factors affecting the use and application of the product. Accordingly, unless we specifically agree otherwise in writing, we accept no liability, to the maximum extent permitted by law, for any product performance problem arising, or for any loss or damage caused by use of the product. We hereby disclaim any warranty or representation, express or implied, arising by operation of law or otherwise, including but not limited to any implied warranty of merchantability or fitness for a particular purpose. All products supplied and all technical guidance provided are subject to our standard terms and conditions of sale. You should obtain a copy of this document and read it carefully. The information contained in this product data sheet may be amended at any time in the light of experience and of our product development policy. Before using the product, it is the customer's responsibility to check with the local representative that the data sheet in their possession is the latest version.
This product data sheet is available on www.international-marine.com or www.international-pc.com and should be identical to this copy. If the version on the website differs from this one, the version on the website shall prevail.
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Data is subject to the manufacturer's latest version; in all cases the manufacturer's latest TDS prevails.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
