Enviroline 405HT Epoxy Phenolic Lining is a heat-resistant coating of the epoxy system. *Use in crude oil and produced water service above 100°C (212°F) requires approval from the International technical representative. Enviroline 405HT is an ultra-high-solids, two-component polyamine-cured lining system based on advanced epoxy phenolic technology. For severely pitted or porous steel, apply approximately 50% of the required film thickness by spray, then immediately roll with a short-nap roller or rubber squeegee to work the coating into the bottom of the pitted areas. Parameters on this page: dry film thickness 500–1000 µm (20–40 mil), theoretical spreading rate 1.30 m²/L, number of components two-component.
Parameter source: AKZONOBEL manufacturer's Technical Data Sheet (TDS) "Enviroline 405HT Epoxy Phenolic Lining"; 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 | 98% |
|---|---|
| Dry Film Thickness | 500–1000 µm (20–40 mil) |
| Theoretical Spreading Rate | 1.30 m²/L |
| VOC | 0.54 lb/gal (65 g/L) US Environmental Protection Agency Method 24, 59 … |
| Density / Specific Gravity | 1.56 kg/L (13.0 lb/gal) |
| Number of Components | Two-component |
| Thinner | For specific advice, refer to the Enviroline Application Guide |
| Mixing Ratio | 2 parts : 1 part (by volume) |
| Colour / Appearance | Available in a limited range of colours, ENVIROLINE 405HT |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Enviroline 405HT is an ultra-high solids, two-component polycyclic amine-cured lining system based on advanced epoxy phenolic technology.
Enviroline 405HT is a new-generation lining system offering improved performance;
- Excellent chemical resistance - High-temperature immersion resistance (e.g. up to 135°C (275°F) in crude oil and oil-water mixtures)* - Suitable for tanks and pressure vessels with continuous operating temperatures up to 150°C (302°F) - Fast curing, ready for service within 14 h at 25°C (77°F) - Excellent resistance to thermal shock and mechanical impact - Ultra-low VOC - Single-coat application - Excellent flexibility. Applied for lining protection of steel and concrete in the oil and gas, chemical, mining and water industries; suitable for crude oil and petroleum storage tanks, downhole pipe piles, downhole pipe casings, internal and external pipe walls, floors, tank bases, trenches, pits, sumps, free water separators, treaters and separators and other assets.
*Use in crude oil and produced water service above 100°C (212°F) requires approval from an International technical representative.
| Colour | Available in a limited range of colours, ENVIROLINE 405HT |
|---|---|
| Gloss | N/A |
| Volume Solids | 98% |
| Typical thickness | Dry film thickness 500–1000 µm (20–40 mil) corresponds to wet film thickness 510–1020 µm (20.4–40.8 mil) |
| Theoretical Spreading Rate | 1.30 m²/L at 750 µm dry film thickness and the stated volume solids; 52 ft²/US gal at 30 mil dry film thickness and the stated volume solids |
| Practical Spreading Rate | Allowing for a suitable loss factor |
| Application Methods | Plural-component airless spray, suitable for airless spray. Drying time; self-recoat interval |
| Temperature | Surface Dry | Hard Dry | Minimum | Maximum |
| 25°C (77°F) | 2 h | 4 h¹ | 4 h | 8 h² |
| 40°C (104°F) | 1 h | 3 h¹ | 3 h | 6 h² |
¹ Allow the film to reach sufficient strength before handling the coated steelwork. A Shore D hardness of 75–80 is recommended as a suitable value for return to service.
² If the maximum recoat interval is exceeded, abrade the lining surface thoroughly with coarse abrasive paper.
| Flash point (typical) | Mixed 66 °C (151 °F) |
|---|---|
| Product weight | 1.56 kg/L (13.0 lb/gal) |
| Volatile Organic Compounds | 0.54 lb/gal (65 g/L) US EPA Method 24 59 g/kg EC Solvent Emissions Directive content (Council Directive 2010/75/EU) Coating hazard GB 30981.2-S-Pb≤1000-NC Complies with GB 30981.2-2025. For more detailed information, refer to 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. Where necessary, 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.
Steel substrate: for optimum performance, Enviroline 405HT must be applied to surfaces prepared by abrasive blast cleaning to Sa3 (ISO 8501-1:2007) or SSPC-SP5. Where not used in high-temperature and/or severe environments, Enviroline 405HT may be applied to surfaces prepared by abrasive blast cleaning to Sa2½ (ISO 8501-1:2007) or SSPC-SP10. Consult International Protective Coatings for details.
Recommended surface roughness 75–125 µm (3–5 mils).
Enviroline 405HT must be applied before oxidation of the steel surface occurs. If oxidation has occurred, all oxidized areas shall be re-blasted to the standards specified above.
Blast cleanliness can be maintained by dehumidification, or an approved temporary primer can be applied.
Concrete: for further information, refer to the International Protective Coatings concrete surface preparation guide.
| Mixing | This product is supplied in two containers as one unit. The entire unit should be stored, mixed and applied in accordance with the Enviroline Application Guide. |
|---|---|
| Mixing ratio | 2 parts : 1 part (by volume) |
| Pot life | 25°C (77°F) | 40°C (104°F) |
| 45 min | 25 min |
| Plural-component airless spray | Recommended | For further information, refer to the Enviroline Application Guide. |
| Suitable for airless spray | Suitable | For specific advice, consult International Paint. |
| Air Spray | N/A |
(with pressure pot)
| Brush | Suitable | For small-area repair or touch-up of welds and edges. |
| Thinner | Generally not required | For specific advice, refer to the Enviroline Application Guide. |
| Cleaner | Enviroline 71C (or International GTA203) |
|---|---|
| Interruption of work | Do not leave material in hoses, guns or spray equipment. Flush all equipment thoroughly with... Enviroline71C or International GTA203. Use immediately after mixing; discard and remix if the pot life is exceeded. |
| Cleaning | Clean all equipment with Enviroline 71C or International GTA203 immediately after use. Periodically flushing spray equipment during the working day is good practice. The frequency of cleaning depends on the quantity sprayed, temperature and elapsed time, including delays. |
All surplus material and empty containers must be disposed of in accordance with local laws and regulations.
Enviroline 405HT withstands continuous high-temperature immersion in a wide range of chemicals, including crude oil (sweet and sour) at pH 4–12, oil-water mixtures and produced water containing oil and gas, up to 135°C (275°F). It is also suitable for use in tanks and pressure vessels with continuous operating temperatures up to 150°C (302°F) and intermittent peaks up to 185°C (365°F) during start-up, shutdown and venting. Consult the Enviroline application guide carefully before use.
This data sheet provides brief guidance for the use of Enviroline 405HT. Requirements for a specific project depend on the end use and operating conditions of the tank or vessel. Always consult International Protective Coatings to confirm the suitability of Enviroline 405HT for the product stored.
Always follow the detailed coating specification recommended by the International Paint Protective Coatings division.
Touch-up is a fundamental requirement of good working practice; it should be part of any lining system.
For heavily pitted or porous steel, apply about 50% of the required film thickness by spray, then immediately roll with a short-nap roller or squeegee to work the coating into the bottom of pits.
For multi-component airless spray application, the product may be heated before application for optimum results: Component A (resin) up to 60 °C (140 °F), Component B (curing agent) up to 40 °C (105 °F).
The temperature of the surface to be coated must be at least 3 °C (5 °F) above the dew point.
For the ideal temperature conditions, see the table below. Throughout curing, in addition to meeting these conditions, adequate ventilation must be maintained.
Substrate Environment Ideal
| Preferred | 21-49 °C(70-120°F) | 21-38 °C(70-100°F) |
| Minimum | 16 °C(60°F) | |
After the coating system is fully cured, the dry film thickness shall be checked with a non-destructive magnetic gauge to verify the minimum thickness of the coating system. The whole coating system shall be free from pinholes and skips. The cured film shall be free from runs, sags, drips, inclusions or other defects. All defects shall be repaired. Repaired areas shall be re-tested and fully cured before the lining is put into service.
Although baking is not required in most applications, it may be used to accelerate curing or to enhance chemical resistance under extremely corrosive conditions. For maximum chemical resistance, bake at 121 °C (250 °F) for at least 2 hours, or at 66 °C for 6–8 hours.
The maximum continuous dry temperature resistance of Enviroline 405HT is 177°C (350°F).
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.
Enviroline 405HT should always be applied to correctly prepared substrates. Where a primer is required as part of the coating system, consult International Protective Coatings for specialist advice.
Enviroline 405HT is a single-coat system. Where necessary, it must only be self-recoated or self-repaired.
| 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 • Enviroline Application Guide. These sections are also available as separate publications on request. |
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This product is intended for professional applicators in industrial use only.
All work, including the application and use of this product, must comply with the relevant national standards, laws and regulations on safety, health and environmental protection.
During application and the subsequent drying period (for common drying times, see the product data sheet), provide adequate ventilation to keep solvent concentrations within safe limits and prevent fire and explosion. Forced ventilation is required in confined spaces. During application and drying, personal ventilation and respiratory protection (e.g. air-fed hood or suitable filter mask) must also be provided. Take the necessary measures to prevent skin and eye contact with the coating (e.g. protective clothing, gloves, goggles, mask, barrier cream).
Before use, read and follow the Material Safety Data Sheet and the Health and Safety section of the application procedure for this product (for two-component coatings, those of the base and curing agent).
If welding or cutting is performed on metal substrate previously coated with this product, dust and fumes will be released; use suitable personal protective equipment and local exhaust ventilation.
The specific safety measures depend on the application method and working environment. If these warnings or instructions are not fully understood or cannot be strictly observed, do not use the product and consult International Paint.
Warning: this product contains liquid epoxy and modified polyamines and may cause skin sensitisation if handled improperly.
| Packaging Specifications | Component A | Component B | ||
| Volume | Packaging | Volume | Packaging | |
| 18 L | 12 L | 20 L | 6 L | 10 L |
| 150 US gal¹ | 100 US gal¹ | 50 US gal¹ | 50 US gal¹ | |
¹ Each set is 150 US gal, comprising 2 x 50 US gal of Component A and 1 x 50 US gal of Component B. Contact AKZONOBEL for other packaging sizes.
| Packaging Specifications | Component A | Component B |
| 150 US gal | 677.7 lb | 739.4 lb |
| 18 L | 18.36 kg | 10.08 kg |
Each set is 150 US gal, comprising 2 x 678 lb of Component A and 1 x 74 lb of Component B
| Shelf life | At 25 °C (77 °F), sealed paint can be stored for 24 months. 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.
