Intertherm 3070 Phenolic Epoxy is an epoxy coating. Intertherm 3070 is designed to protect subsea equipment with a maximum operating temperature of the steel structure up to 185 °C (365 °F). Designed for the subsea market, Intertherm 3070 is a two-component phenolic epoxy coating with excellent high-temperature resistance, compatible with cathodic protection systems. 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: volume solids 70% ± 2%, dry film thickness 100–175 µm (4–7 mil), theoretical spreading rate 5.80 m²/L.
Source: AkzoNobel original technical data sheet (TDS) "Intertherm 3070 Phenolic Epoxy"; 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 | 70% ± 2% |
|---|---|
| Dry Film Thickness | 100–175 µm (4–7 mil) |
| Theoretical Spreading Rate | 5.80 m²/L |
| VOC | 2.42 lb/gal (290 g/L) US EPA Method 24 18… |
| Density / Specific Gravity | 1.67 kg/L (13.9 lb/gal) |
| Number of Components | Two-component |
| Thinner | Not recommended |
| Mixing Ratio | 7.38 parts : 1 part (by volume) |
| Colour / Appearance | Limited colour range, INTERTHERM 3070 |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Designed for the subsea market, Intertherm 3070 is a two-component phenolic epoxy coating with excellent high-temperature resistance, compatible with cathodic protection systems.
Provides corrosion protection for subsea equipment such as Christmas trees and flowlines.
Intertherm 3070 is designed to protect subsea equipment with a maximum operating temperature of the steel structure up to 185 °C (365 °F).
| Colour | Limited colour range, INTERTHERM 3070 |
|---|---|
| Gloss | Semi-gloss |
| Volume Solids | 70% ± 2% |
| Typical thickness | Dry film 100–175 µm (4–7 mil), equivalent to wet film 143–250 µm (5.7–10 mil) |
| Theoretical Spreading Rate | At 120 µm dry film thickness and the stated volume solids, 5.80 m²/L; at 4.8 mil dry film thickness and the stated volume solids, 234 ft²/US gal |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Suitable for airless spray, brush, roller. Drying time; self-recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 10°C (50°F) | 6 h | 24 h | 30 h | 14 days |
| 15°C (59°F) | 5 h | 16 h | 25 h | 14 days |
| 25°C (77°F) | 3 h | 6 h | 15 h | 14 days |
| 40°C (104°F) | 2 h | 3 h | 10 h | 14 days |
Recoat data refer to the time to apply a full second coat over the first film. For detailed recoat interval information, refer to the Intertherm 3070 application guide.
| Flash point (typical) | Component A 24 °C (75 °F); Component B 27 °C (81 °F); mixed 24 °C (75 °F) |
|---|---|
| Product weight | 1.67 kg/L (13.9 lb/gal) |
| Volatile Organic Compounds | 2.42 lb/gal (290 g/L) US EPA Method 24. 187 g/kg. EU Solvent Emissions Directive (EU Council Directive 2010/75/EU). Coating hazards: GB 30981.2-S-Pb≤1000-NC. Complies with GB 30981.2-2025. For further details, see the "Product Characteristics" section. |
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.
Oil and grease must be removed in accordance with the SSPC-SP1 solvent cleaning standard.
Abrasive blast clean to at least Sa 2.5 (ISO 8501-1:2007) or SSPC-SP10.
Recommended surface roughness 50–75 µm (2–3 mils).
Intertherm 3070 must be applied before the steel oxidises; if oxidation has occurred, the oxidised areas shall be re-blasted to the above standard.
Surface defects exposed by blast cleaning must be ground, filled or treated by another suitable method.
Damaged areas and welds shall be prepared to the specified standard (e.g. Sa 2½ or SSPC-SP10, roughness 50–75 µm). An angular surface roughness of 50–75 µm (2–3 mil) is recommended.
Stainless steel: ensure the surface is clean, dry and free from metal corrosion products. Sweep with a non-metallic, chloride-free abrasive (such as alumina or garnet) to obtain a roughness of about 25–50 µm (1–2 mil).
| 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. |
|---|
(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.
It is recommended to allow the mixed Intertherm 3070 to stand for 20 minutes before application.
| Mixing ratio | 7.38 parts : 1 part (by volume) |
|---|
| Pot life | 10°C (50°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| * | 5 h | 3 h | 1 h |
*See page 3 for the minimum pot life of this product at 15 °C (59 °F).
| Suitable for airless spray | Recommended: nozzle diameter 0.38–0.58 mm (15–23 thousandths of an inch); total paint pressure at the nozzle not less than 176 kg/cm² (2503 psi) |
|---|
| Brush | Applicable — for small-area repair only | Several coats may be required to achieve the specified film thickness. |
| Roller application | Applicable — for small-area repair only | Several coats may be required to achieve the specified film thickness. |
| Thinner | Not recommended |
| Cleaner | International GTA 822 (or GTA 415) |
|---|---|
| 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 | Clean all equipment immediately after use with International cleaning solvent. Periodic flushing of spray equipment during application is also recommended. The flushing frequency depends on the quantity sprayed, temperature and time, including all interruptions. Do not exceed the pot life. Dispose of all leftover coating and empty containers in accordance with local regulations/laws. |
|---|
Intertherm 3070 does not cure adequately below 10 °C (50 °F). During application and for 48 hours after the final coat, the steel temperature must not fall below 10 °C (50 °F). In addition, relative humidity must not exceed 50% at 10–20 °C (50–68 °F), or 80% above 20 °C (68 °F). Intertherm 3070 should reach 15 °C (59 °F) before application. As with all epoxy coatings, this product chalks and fades on exposure to the atmosphere. The rate of chalking depends on the environment, but this has no adverse effect on anti-corrosion performance; only the surface layer chalks.
The recommended total coating film thickness is 350 µm (14 mil), applied in two coats of 175 µm (7 mil) each. Intertherm 3070 may also be applied in three coats of 120 µm (4.8 mil) each. The total coating thickness must not exceed 450 µm (18 mil).
Immersion time: it is recommended that Intertherm 3070 be immersed only after the following minimum curing times.
Immersion
| 10°C (50°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 7 days | 4 days | 3 days | |
Airless spray is recommended to achieve the maximum film thickness in a single coat. Other methods (such as brush, roller) make it difficult to achieve the required film thickness; multiple coats may be needed, and these methods are suitable only for small areas and stripe coating.
Stripe coating is an important part of good application practice and should be included in any specification. Stripe coating must not be applied wet-on-wet. See the Intertherm 3070 application guide for recoat intervals.
After the final coat has cured, measure the total system film thickness with a suitable non-destructive magnetic gauge, ensuring the coating is free of pinholes and defects. All defects shall be corrected and repaired. Repaired areas shall be re-tested and cured as specified before being put into service.
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.
Intertherm 3070 is normally applied over suitably prepared substrates.
Intertherm 3070 is suitable for self-overcoating only.
If a subsea insulation layer is to be applied over Intertherm 3070, consult the insulation manufacturer for further guidance.
| For further information on the industry standards, terms and abbreviations used in this datasheet, see www.international-pc.com | Available in the following documents on the website: • Definitions and Abbreviations • Surface Preparation • Theoretical and Practical Spreading Rates. These sections are also available as separate brochures. |
|---|
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.
Before use, always read and follow the safety data sheet for this product (components A and B) and the health and safety section of the application procedure.
Specific safety measures depend on the application method and working environment. If these warnings and instructions cannot be fully understood or strictly followed, do not use this product and consult International Paint Protective Coatings.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 20 L | 17.56 L | 20 L | 2.38 L | 2.5 L |
For other packaging sizes, contact AkzoNobel.
| Packaging Specifications | Component A | Component B |
| 20 L | 31.17 kg | 2.29 kg |
| Shelf life | Component A – at least 12 months at 25 °C (77 °F). |
|---|
Component B – at least 18 months at 25 °C (77 °F).
Thereafter, inspection is required. Store in a dry, cool environment away from heat and sources of ignition.
© 2026/5/27 AkzoNobel. All rights reserved.
All registered trademarks mentioned in this publication are licensed to or owned by AkzoNobel.
www.international-pc.com
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.
