Arccoil SP 410 Silicone-Modified Polyester Coil Topcoat
A silicone-modified polyester coil topcoat applied at 20 to 25 microns for exposed roofing and cladding in high ultraviolet and high ambient heat, where a standard polyester chalks early. The silicone modification raises gloss retention, colour retention and surface hardness.
Grade Arccoil SP 410 | Range Coil and Extrusion Coatings | Technology Solvent-borne silicone-modified polyester
Technical Data Sheet
Arccoil SP 410
Issue 2026.09
1. Product description
A silicone-modified polyester topcoat at twenty to twenty-five microns for exposed roofing and cladding in high ultraviolet and high ambient heat, where a standard polyester chalks early. The silicone modification raises gloss retention, colour retention and surface hardness against transit and site abrasion. Bend radii have to be more generous than for Arccoil PE 350, typically one T step higher, and have to be agreed against the actual roll forming schedule.
2. Features
- Silicone-modified polyester for high ultraviolet and high ambient heat
- Higher gloss and colour retention than a standard polyester
- Harder surface against transit and site abrasion
- Bend radii typically one T step more generous than Arccoil PE 350, agreed against the roll forming schedule
3. Recommended uses
Exposed roofing and wall cladding in high ultraviolet and high ambient heat. Suited to sheet that must resist abrasion in transit and on site.
Substrates. Primed galvanised steel, zinc-aluminium alloy coated steel and aluminium strip.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Solvent-borne silicone-modified polyester | Formulation |
| Dry film thickness | 20 to 25 microns over primer | EN 13523-1; ASTM D7091 for the magnetic induction or eddy current check on the line |
| Peak metal temperature at oven exit | 232 to 249 degrees Celsius | Strip-attached thermocouple or peak metal temperature recorder read on the line; a line measurement, as there is no dedicated published test standard |
| Specular gloss, 60 degrees | 30 to 70 gloss units, set to the specification | ISO 2813, ASTM D523, EN 13523-2 |
| Colour difference against the approved panel | Delta E commonly specified at not more than 1.0 for solid colours | ASTM D2244, EN 13523-3 |
| T-bend flexibility on 0.5 mm strip, no cracking with a tape pull across the bend | 2T to 3T, agreed against the actual roll forming schedule | EN 13523-7, ASTM D4145 |
| Pencil hardness | H to 2H | EN 13523-4, ASTM D3363 |
| Solvent resistance, methyl ethyl ketone double rubs | 50 to 100 double rubs without exposure of the primer, used as a cure check on the line | EN 13523-11, ASTM D5402 |
| Accelerated ultraviolet exposure, UV-A 340 lamps with condensation | 1000 to 2000 hours, with gloss retention and colour change agreed for the grade; cabinet hours rank systems and do not convert into years in service | EN 13523-10, ISO 16474-3, ASTM G154 |
| Neutral salt spray resistance, finished system | 500 to 1000 hours with creep from the scribe not more than 2 mm and no field blistering, set by the system chemistry and film build | ISO 9227, ASTM B117, EN 13523-8 |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Roll coating at the finish coater, front face, with the backing coat applied to the reverse in the same pass |
| Primer | Arccoil PR 210 or Arccoil PR 250, cured and quenched before the finish coater |
| Viscosity adjustment | Hold the supply at the agreed viscosity and coater temperature; correct with the supplied thinner only, to the supplied ratio |
| Applied film | 20 to 25 microns dry; check thickness at both edges and the centre of the strip |
| Cure | 232 to 249 degrees Celsius peak metal temperature, then quench and recoil; confirm cure with a solvent rub check rather than by appearance |
| Forming | Agree the bend limit with the roll former before the coil is booked and run a forming trial on the actual roll former |
Process. Roll coated to twenty to twenty-five microns dry over Arccoil PR 210 or PR 250, cured to a peak metal temperature of 232 to 249 degrees Celsius, quenched and recoiled.
6. Storage and handling
Store in the original, tightly closed containers in a cool, dry, covered area away from direct sunlight and heat, and stir to a uniform consistency before use. Shelf life is stated on the label and 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.