Arcstruct EP 480 High-Build Surface-Tolerant Epoxy
High-solids, high-build two-pack epoxy for maintenance and refurbishment, formulated to wet out steel cleaned by hand or power tool to ISO 8501-1 St 2 or St 3 where full blast cleaning is not possible. It builds heavy thickness in one or two coats and carries abrasion duty on walkways, plant structures and material handling equipment.
Grade Arcstruct EP 480 | Range Industrial and Infrastructure Coatings | Technology High-solids two-pack epoxy, surface tolerant
Technical Data Sheet
Arcstruct EP 480
Issue 2026.09
1. Product description
High-solids, high-build epoxy for maintenance and refurbishment, formulated to wet out hand and power tool cleaned steel to ISO 8501-1 St 2 or St 3 where full blast cleaning is not possible. It builds heavy thickness in one or two coats and carries the abrasion duty on walkways, plant structures and material handling equipment. Used as a single high-build layer where scaffold time, not material cost, controls the job.
2. Features
- Wets out hand and power tool cleaned steel to St 2 or St 3
- High build in one or two coats, reducing scaffold time
- Carries abrasion duty on walkways and plant structures
- Low temperature grade for winter work
- Compatibility with existing coatings confirmed by test patch
3. Recommended uses
Maintenance painting of plant structures, walkways and material handling equipment over hand-prepared steel or tightly adherent aged coatings, and protection of concrete plinths and encasements.
Substrates. Hand or power tool cleaned steel, tightly adherent aged coatings, blast-cleaned steel, concrete plinths and encasements
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | High-solids two-pack epoxy, surface tolerant | Formulation |
| Finish | Low sheen in the agreed colour; the epoxy film chalks under ultraviolet, so exterior appearance calls for a topcoat | Visual |
| Volume solids | 70 to 80 per cent | ISO 3233-1 |
| Density, mixed | 1.3 to 1.7 g/cm3 | ISO 2811-1 |
| Dry film thickness per coat | 150 to 200 micrometres per coat, applied in one or two coats | ISO 2808 |
| Adhesion, pull-off | Typically 5 to 15 MPa on blast-cleaned steel; on hand or power tool cleaned steel and aged coatings, measured on the test patch | ISO 4624 or ASTM D4541 |
| Taber abrasion | Typically 60 to 120 mg loss per 1000 cycles, CS17 wheel, 1 kg load | ASTM D4060 |
| Impact resistance | No cracking or disbondment at the energy set by the specification, commonly 1.5 to 5 J | ASTM D2794 |
| Solvent resistance, fully cured film | 50 to 100 MEK double rubs without softening | ASTM D5402 |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Airless spray for the main coat; brush or roller on edges and welds. |
| Surface preparation | Loose rust, loose mill scale and flaking coating removed by hand or power tool to St 2 or St 3 to ISO 8501-1, or to P St 2 or P St 3 to ISO 8501-2 where sound aged coating is retained, or blast cleaned where access allows. Soluble salts on previously exposed steel sampled to ISO 8502-6, measured to ISO 8502-9 and washed down. Aged coatings cleaned, degreased and abraded; concrete cleaned with laitance removed. |
| Compatibility | Test patch over the existing coating, checked for lifting, wrinkling and adhesion before full application. |
| Mixing | Base and curing agent mixed completely at the stated ratio, given the stated induction time and used within the pot life, which shortens as temperature rises. The standard or low temperature grade is chosen by the application temperature. |
| Film thickness | Edge stripe coat first, then 150 to 200 micrometres dry per coat in one or two coats, wet film checked with a comb and dry film verified to ISO 2808. |
| Conditions and cure | Substrate at least 3 degrees Celsius above the dew point during application and initial cure. Ambient cure, with the low temperature grade used for winter work. |
| Next coat | Arcstruct PU 260 Acrylic Polyurethane Topcoat where exterior colour and gloss retention are required; otherwise used as a single high-build layer. |
Process. Airless spray, brush or roller on edges and welds. Two-pack, edge-stripe coating applied before the main coat. Ambient cure with a low temperature grade available for winter work. Compatibility with an existing coating is confirmed by a test patch before full application
6. Storage and handling
Store in the original closed containers under cover, dry and out of direct sun, at 5 to 35 degrees Celsius; stir the base to redisperse any settlement before mixing. Shelf life is stated on the label and the Certificate of Analysis. Handle and use the product in line with its Safety Data Sheet.
7. Safety and regulatory information
Read the Safety Data Sheet before use. Safety Data Sheets and regulatory declarations are issued by our technical centre against the product and batch supplied, so they are sent on request rather than published. Request a Safety Data Sheet or declaration.
This Technical Data Sheet is published for on-screen reference. The information is given in good faith from laboratory and application experience and describes typical values; it is not a specification and does not replace a trial on your own substrate and line. Arctic Materials may revise this sheet without notice. Issue 2026.09.
Technical Data Sheets on this site are for on-screen viewing. For a controlled copy, write to tech@arcticmaterials.com.
Other grades in this range
Need a Safety Data Sheet, a regulatory declaration or a grade specified to your line? Contact our technical centre.