International Intergard 251HS is a two component, low VOC, high solids, fast curing epoxy primer and intermediate containing zinc phosphate anti-corrosive pigmentation.
International Intergard 251HS, a two component, low VOC, high solids, fast curing epoxy primer and intermediate containing zinc phosphate anti-corrosive pigmentation.
For use on a range of industrial facilities and infrastructure assets where film build and fast through-put are priorities, Intergard 251HS is preferred for use with systems for chemical environments where zinc based materials can be subject to attack in both acidic and alkaline conditions.
This primer, in combination with approved topcoats, offers optimised anticorrosive protection in various atmospheric environments. Suitable for overcoating within 2 hours under common climatic conditions.
Please note that all colours have a 10 -14 day lead time, on top of the stated delivery.
| Practical Information | |
|---|---|
| Volume Solids | 75% ± 2% |
| Typical Thickness | 75-200 microns (3-8 mils) dry equivalent to 100-267 microns (4-10.7 mils) wet |
| Theoretical Coverage | 10 m²/litre at 75 microns d.f.t and stated volume solids |
| 401 sq.ft/US gallon at 3 mils d.f.t and stated volume solids | |
| Practical Coverage | Allow appropriate loss factors |
| Method of Application | Airless Spray, Air Spray, Brush, Roller |
Drying Times
| Drying Time | ||||
|---|---|---|---|---|
| Overcoating Interval with recommended topcoats | ||||
| Temperature | Touch Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 2 hours | 5.5 hours | 4 hours | Extended1 |
| 15°C (59°F) | 60 minutes | 3.5 hours | 3 hours | Extended1 |
| 25°C (77°F) | 30 minutes | 2.25 hours | 2 hours | Extended1 |
| 40°C (104°F) | 15 minutes | 60 minutes | 60 minutes | Extended1 |
1 See International Protective Coatings Definitions and Abbreviations.
Maximum overcoating intervals are shorter when using polysiloxane topcoats. Consult International Protective Coatings/Rawlins Technical Support 0113 2455450 (option 2) or send a message to [email protected] for further details.
| Regulatory Data | ||
|---|---|---|
| Flash Point (Typical) | Part A 31°C (88°F); Part B 30°C (86°F); Mixed 31°C (88°F) | |
| Product Weight | 1.59 kg/l (13.3 lb/gal) | |
| VOC | 2.02 lb/gal (243 g/lt) | EPA Method 24 |
| 157 g/kg | EU Solvent Emissions Directive (Council Directive 2010/75/EU) | |
See Product Characteristics section for further details.
All steel surfaces to be coated should be clean, dry and free from contamination. Prior to paint application, all surfaces should be assessed and treated in accordance with ISO 8504-2000. Oil or grease should be removed in accordance with SSPC-SP1 solvent cleaning.
Steel
Abrasive blast clean to a minimum of Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation has occurred between blasting and application of Intergard 251HS the surface should be re-blasted to the specified visual standard. Surface defects revealed by the blast cleaning process should be ground, filled, or treated in the appropriate manner.
A surface profile of 40-75 microns (1.5-3.0 mils) is recommended.
Shop Primed Steelwork
Weld seams and damaged areas should be abrasive blast cleaned to a minimum Sa2½ standard (ISO 8501-1:2007) or SSPC SP6. Where this is not practical, preparation to SSPC SP11 is acceptable.
Mixing
Material is supplied in two containers as a unit. Always mix a complete unit in the proportions supplied. Once the unit has been mixed it must be used within the working pot life specified.
Mix Ratio
Pot Life
| Working Pot Life | 5°C (41°F) | 15°C (59°F) | 25°C (77°F) | 40°C (104°F) |
| 90 minutes | 60 minutes | 60 minutes | 30 minutes |
Applicators
| Airless Spray | Recommended | Tip Range 0.43-0.53 mm (17-21 thou) | Total output fluid pressure at spray tip not less than 155 kg/cm² (2204 p.s.i.) |
| Air Spray (Pressure Pot) | Suitable | Gun | DeVilbiss MBC or JGA |
| Air Cap | 704 or 765 | ||
| Fluid Tip | E | ||
| Brush/Roller | Suitable | Recommended for small areas and repairs, multiple coats will be necessary to achieve the required dry film thickness. | |
Cleaning/Thinning
| Thinner | International GTA220 | Do not thin more than allowed by local environmental legislation |
| Cleaner | International GTA822 |
Work Stoppages
Do not allow material to remain in hoses, gun or spray equipment. Thoroughly flush all equipment with International GTA822. Once units of paint have been mixed they should not be resealed and it is advised that after prolonged stoppages work recommences with freshly mixed units.
Clean Up
Clean all equipment immediately after use with International GTA822. It is good working practice to periodically clean equipment during the course of the working day. Frequency of cleaning will depend upon amount used, temperature and elapsed time, including any delays.
All surplus materials and empty containers should be disposed of in accordance with appropriate regional regulations/legislation.
Intergard 251HS is preferred for use with systems for chemical environments where zinc based materials can be subject to attack in both acidic and alkaline conditions
Apply in good climatic conditions. The temperature of the surface to be coated must be at least 3°C (5°F) above the dew point.
Over-application of Intergard 251HS will extend both the minimum overcoating periods and handling times.
When applying Intergard 251HS by brush or roller, it may be necessary to apply multiple coats to achieve the required film build.
In common with all epoxies, Intergard 251HS will chalk and discolour on exterior exposure. Where a durable cosmetic finish with good gloss and colour retention is required overcoat with recommended topcoats.
Intergard 251HS is not designed for continuous water immersion.
An alternative curing agent to improve application properties in tropical climates is also available - please contact our technical support team for more details on 0113 2455450 (option 2) or send a message to [email protected].
The following drying times and overcoating intervals apply when the tropical climate curing agent is used;
| Drying Time | ||||
|---|---|---|---|---|
| Overcoating Interval with recommended topcoats | ||||
| Temperature | Touch Dry | Hard Dry | Minimum | Maximum |
| 5°C (41°F) | 5 hours | 16 hours | 16 hours | Extended1 |
| 15°C (59°F) | 4 hours | 6 hours | 6 hours | Extended1 |
| 25°C (77°F) | 90 minutes | 4 hours | 4 hours | Extended1 |
| 40°C (104°F) | 45 minutes | 2 hours | 2 hours | Extended1 |
1 See International Protective Coatings Definitions and Abbreviations.
Pot Life
| 5ºC (41ºF) | 15ºC (59ºF) | 25ºC (77ºF) | 40ºC (104ºF) |
| 2 hours | 2 hours | 90 minutes | 60 minutes |
Note: VOC values are typical and are provided for guidance purpose only. These may be subject to variation depending on factors such as differences in colour and normal manufacturing tolerances.
Low molecular weight reactive additives, which will form part of the film during normal ambient cure conditions, will also affect VOC values determined using EPA Method 24.
Intergard 251HS is normally applied directly to steel, however, it can be applied over the following primers:
Recommended topcoats are:
For other suitable topcoats, consult International Protective Coatings or Rawlins Technical Support.
Customer agrees that before placing an Order, Customer has read and understood the most up to date Product Data Sheet for the Product. Where we have access to the Product Data Sheet from the manufacturer, we will either provide a copy on request, or include a link to the Product Data Sheet available on the manufacturer’s website. Customer further agrees that we have no liability for any errors or omissions contained within the Product Data Sheets. For more information, please see our Terms & Conditions of Sale.
International Intergard 251HS is only available with the shipping and delivery timescales listed below - please do not contact our Customer Support Team with enquiries about alternative or earlier shipping and delivery times.
Saturdays and Sundays, as well as Bank Holidays, are not classed as working days.
Orders placed after the cut-off for this product will not be processed for earliest dispatch until 9am the next working day.
All delivery costs below are excluding VAT
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