Marathon 550 Extra Heavy-Duty Epoxy Coating 550 is an epoxy coating. Recommended for offshore environments such as refineries, power stations, bridges, buildings, mining equipment and general structural steel. In atmospheric and immersion environments, it can be used as primer, intermediate coat, topcoat or single-coat system. Parameters on this page: volume solids 85 ± 2%, dry film thickness 200–550 µm, theoretical spreading rate 4.3–1.5 m²/L. Comparable products from the same brand: Balloxy HB Light Epoxy Ballast Water Tank Coating, Jota Armour Heavy-Duty Abrasion-Resistant Epoxy Anti-Slip Coating, Jotacote HF002 General-Purpose Abrasion-Resistant Epoxy HF.
Parameter source: JOTUN original technical data sheet (TDS) 'Marathon 550 Extra Heavy-Duty Epoxy Coating 550'; values such as spreading rate 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 | 85 ± 2% |
|---|---|
| Dry Film Thickness | 200–550 µm |
| Theoretical Spreading Rate | 4.3–1.5 m²/L |
| VOC | 75 g/L (China) |
| Density / Specific Gravity | 1.6 kg/L |
| Number of Components | Two-component |
| Flash Point | 42 °C |
| Thinner | Jotun Thinner No. 17 |
| Mixing Ratio | 4 parts : 1 part (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Marathon 550
This is a two-component polyamine-cured epoxy coating. It is a surface-tolerant product that can be applied to damp substrates. It continues to cure when immersed in water. Good abrasion resistance. Suitable for highly corrosive environments, such as splash zones and tidal zones. It can be used as a primer, intermediate coat, topcoat or single-coat system in atmospheric and immersed environments. It has excellent cathodic disbondment resistance. Suitable for properly prepared carbon steel, galvanized steel, stainless steel, aluminium and concrete substrates.
Suitable for steel structures and pipes in highly corrosive and immersed environments. Recommended for offshore environments such as refineries, power stations, bridges, buildings, mining equipment and general structural steel. Particularly suitable for areas requiring high mechanical strength, such as splash zones and tidal zones. Compatible with cathodic protection systems.
Others
Pre-qualified according to Norsok M-501 in selected coating systems. Petrobras N-2943 specification - Annex A - Direct-to-Metal (DTM) coating system requirements. Other certificates and approvals are available upon request.
Tinted using the industrial tinting system (MCI)
| Property | Test / Standard | Description |
| Volume Solids | ISO 3233 | 85± 2 % |
| Gloss (GU 60°) | ISO 2813 | Gloss (70–85) |
| Flash Point | ISO 3679 Method 1 | 42 °C |
| Density | Theoretical Value | 1.6 kg/L |
| Region | Regulations | Test / Standard | VOC Value |
| US | CARB(SCM)2020 / SCAQMD rule 1113 | Calculation | 163 g/L |
| Hong Kong | Air Pollution Control (VOC) Regulation | Calculation | 163 g/L |
| EU | European Paint Directive 2004/42/CE | Calculation | 163 g/L |
| China | Mandatory national standard of China | GB 30981.2-2025 | 75 g/L |
| Coating hazards GB | 30981.2-S-Pb≤1000-NC |
Contains reactive thinner
The data listed are based on factory batch production and may vary slightly with colour.
| Gloss description | According to JOTUN's definition of functional coatings |
|---|
Exposure to damp conditions soon after application affects the coating surface, causing whitening, particularly noticeable on dark colours. This does not affect the protective performance of the product.
Typical recommended specification range
| Dry Film Thickness | 200–550 µm |
| Wet Film Thickness | 235–650 µm |
| Theoretical Spreading Rate | 4.3–1.5 m²/L |
Maximum dry film thickness is 1000 µm when used in horizontal areas of deck coating systems.
Surface Preparation
| Substrate | Minimum | Recommended |
| Carbon Steel | St 2 (ISO 8501-1) | Sa 2½ (ISO 8501-1) |
| Galvanised steel | The surface should be clean, dry and have a suitable profile | Sweep blast with a non-metallic abrasive to produce a clean, |
| ° | a rough and uniform surface. | |
| Aluminium | The surface should be blasted with a non-metallic abrasive, | “Blast clean using an approved non-metallic abrasive |
| hand- or machine-sanded using abrasive paper or fibre discs, | to produce a sharp angular surface profile.” |
to produce scratch marks on the surface.
| Stainless steel | The surface should be blasted with a non-metallic abrasive, | “Blast clean using an approved non-metallic abrasive |
| hand- or machine-sanded using abrasive paper or fibre discs, | to produce a sharp angular surface profile.” |
| Concrete | Curing time of at least 4 weeks. Maximum moisture 5%. Treat the surrounding concrete surface by closed-circuit blasting, diamond grinding and other suitable methods to remove laitance. | |
| Coated surface | A clean, dry and sound compatible primer. | |
| Shop-primed Steel | Sa 2 (ISO 8501-1) | |
This product may be applied by the following methods
| Spray: | Apply by airless spray. |
| Brush: | Recommended for touch-up and small-area application. Take care to achieve the specified dry film thickness. |
| Roller: | May be used for small areas, but not recommended as the first primer coat. However, with roller application, take care to apply sufficient material to achieve the specified dry film thickness. |
| Marathon 550 Comp A — Heavy-Duty Abrasion-Resistant Epoxy 550, Component A | 4 parts |
| Marathon 550 Comp B — Heavy-Duty Abrasion-Resistant Epoxy 550, Component B | 1 part |
| Thinner | Jotun Thinner No. 17 |
|---|
| Nozzle tip size (inch/1000): | 21-27 |
| Nozzle pressure (minimum): | 170 bar / 2500 psi |
| Substrate Temperature | 5 °C | 10 °C | 15 °C | 23 °C | 40 °C |
| Touch Dry | 15 h | 11 h | 9 h | 4 h | 1.5 h |
| Walk-on Dry | 26 h | 18 h | 14 h | 8 h | 3 h |
| Minimum recoat interval | 26 h | 18 h | 14 h | 8 h | 3 h |
| Dry/cured to service | 14 days | 10 days | 7 days | 3 days | |
For the maximum recoat interval, refer to the Application Guide (AG) for this product.
Drying and curing times are determined based on temperature and relative humidity below 85%, with dry film thickness within the average range.
Excessive dry film thickness or over-thinning extends drying and curing times.
If applied one hour earlier on the tidal zone of legs and piers, the product may be immersed in water. Early immersion causes whitening, visible on most dark colours. However, corrosion performance is not affected.
| Touch Dry | The state at which light finger pressure leaves no mark or stickiness. |
|---|---|
| Walk-on Dry | The minimum time after which the coating allows normal foot traffic without leaving permanent footprints, marks or other physical damage. |
Minimum recoat interval after drying: the recommended minimum interval before applying the next coat.
Dry/cured to service: the minimum time before the coating can be permanently exposed to a specific environment/medium.
| Paint temperature | 23 °C | 40 °C |
| Pot Life | 1 h | 20 min |
Temperature
| Drying, atmospheric | Continuous 120 °C | Peak - |
| Immersed, sea water | 50 °C | 60 °C |
Withstands peak temperatures for a maximum of one hour.
At the above temperatures, protective performance is unaffected, but appearance may be affected.
Note: this coating can withstand different immersion temperatures, depending on the specific chemical and whether immersion is continuous or intermittent. Heat resistance is affected by the coating system as a whole. When used with other coatings, ensure that all coatings in the system have similar heat resistance.
Depending on the actual exposure conditions in service, this product may be used with various primers and topcoats. Some reference systems are listed below. For specific systems, contact JOTUN.
| Previous coat: | Epoxy, inorganic zinc silicate shop primer, epoxy shop primer |
| Subsequent coat: | Epoxy, polyurethane, polysiloxane |
| Volume | Container Size | |
| (L) | ||
| Marathon 550 Comp A — Heavy-Duty Abrasion-Resistant Epoxy 550, Component A | 14.4 | 20 |
| Marathon 550 Comp B — Heavy-Duty Abrasion-Resistant Epoxy 550, Component B | 3.6 | 5 |
The packaging sizes above are typical reference sizes for factory batch production. Due to regional regulatory differences, packaging sizes and capacities may vary by region.
Store in accordance with national regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.
| Marathon 550 Comp A — Heavy-Duty Abrasion-Resistant Epoxy 550, Component A | 24 months |
| Marathon 550 Comp B — Heavy-Duty Abrasion-Resistant Epoxy 550, Component B | 24 months |
In some markets, the stated shelf life may be shortened to comply with local legal requirements. The above is the minimum shelf life; thereafter, testing is required to confirm quality remains acceptable.
This product can contribute to green building standard credits. Visit Jotun.com for more information or contact your local JOTUN representative.
EPDs are available at www.epd-norge.no
For professional use only. Applicators and workers must be trained, experienced, capable and equipped to mix, stir and apply the coating correctly in accordance with JOTUN's technical documents. Applicators and workers must wear appropriate personal protective equipment when using this product. This guidance is provided based on current product knowledge. Any proposed modification to suit site conditions must be approved by the responsible JOTUN representative before use.
Read the safety warnings on the container packaging. Use in well-ventilated conditions. Avoid inhaling spray mist and avoid skin contact. In case of accidental splashes on skin, wash immediately with a suitable cleaner, soap and water. In case of eye contact, rinse thoroughly with water and seek medical attention immediately.
When used primarily as a primer or antifouling coating, products may show slight colour variation from batch to batch. Such products, and epoxy products used as topcoats, may chalk when exposed to sunlight.
Gloss and colour retention of topcoats depend on the colour type, the surrounding environment such as temperature and UV intensity, application quality and product type. Contact your local JOTUN office for further information.
The information in this datasheet is based entirely on knowledge gained in our laboratory and in practice. JOTUN products are regarded as semi-finished products, and their use is generally beyond our control. JOTUN therefore guarantees only the quality of the product itself. To comply with local regulations, the product may be adjusted, and we reserve the right to modify the datasheet without further notice.
Users should consult JOTUN for specific guidance on the suitability of the product for their requirements and applications.
In case of any discrepancy between language versions, the English (UK) version shall prevail.
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.
