Arcvolt TH 210 High-Emissivity Radiating Coating
A thin, matt, high-emissivity coating for heat sinks, enclosure walls, cabinet interiors and electronics housings, applied to raise radiative heat loss from a surface that is already the right shape for the duty. The gain is largest on bare, bright or mill-finish metal; anodised, painted or already dark matt surfaces start high and gain little.
Grade Arcvolt TH 210 | Range Energy and Electronics Coatings | Technology Matt high-emissivity coating, stoving or air-dry
Technical Data Sheet
Arcvolt TH 210
Issue 2026.09
1. Product description
A thin, matt, high-emissivity coating for heat sinks, enclosure walls, cabinet interiors and electronics housings, where the aim is to raise radiative heat loss from a surface that is already the right shape for the duty. The gain is largest on bare, bright or mill-finish metal, which has a natural total emittance of the order of 0.05 to 0.2. Anodised, painted or already dark matt surfaces start high, often above 0.8, and gain little. Film build is deliberately low so the added conduction resistance stays negligible.
2. Features
- Total normal emittance 0.85 to 0.95 at the production film build, against 0.05 to 0.2 for bare bright aluminium
- Low build of 15 to 30 microns keeps added conduction resistance negligible
- Matt finish
- Stoving version and an air-dry variant
3. Recommended uses
Heat sinks, enclosure walls, cabinet interiors and electronics housings in bare or mill-finish aluminium, copper or steel, where radiative heat loss has to rise without a change to the part.
Substrates. Bare and mill-finish aluminium, extruded and skived heat sinks, copper, cold-rolled and galvanised steel enclosures.
4. Typical properties
| Property | Typical value | Method |
|---|---|---|
| Technology | Matt high-emissivity coating, stoving or air-dry | Formulation |
| Finish | Matt; gloss level agreed for the project | ISO 2813 |
| Total normal emittance | 0.85 to 0.95 at the production film build on the substrate being coated, against 0.05 to 0.2 for bare bright aluminium | ASTM E408 |
| Dry film thickness | 15 to 30 microns | ISO 2808 |
| Added conduction resistance | Negligible at the applied build | Not applicable |
| Adhesion, cross-cut | Classification 0 to 1 on the specified pre-treatment | ISO 2409 |
| Cure window, stoving version | 15 to 25 minutes at 150 to 180 degrees C metal temperature | Customer or supplier protocol |
| Cure window, air-dry variant | Handling hard within 60 minutes, full property development within 7 days | Customer or supplier protocol |
Typical values, not a specification. Values for each batch are given on its Certificate of Analysis.
5. Application
| Parameter | Guidance |
|---|---|
| Application method | Conventional or electrostatic spray |
| Surface preparation | Clean and degreased, with the pre-treatment specified for the substrate |
| Thinner | Only the thinner specified for the grade on the label |
| Applied film thickness | 15 to 30 microns dry |
| Cure schedule | Stove 15 to 25 minutes at 150 to 180 degrees C metal temperature, or for the air-dry variant, handling hard within 60 minutes with full property development within 7 days |
| Inspection | Check fin channels for bridging after coating; a bridged fin loses more convective area than the emittance gain returns |
| Selection | Specify for bare, bright or mill-finish metal. Anodised, painted or dark matt surfaces, often already above 0.8, gain little. |
Process. Conventional or electrostatic spray at 15 to 30 microns dry. Stove 15 to 25 minutes at 150 to 180 degrees C metal temperature, or air-dry variant handling hard in 60 minutes with full property development in 7 days. Fin channels must be checked for bridging after coating, because a bridged fin loses more convective area than the emittance gain returns.
6. Storage and handling
Store in the original closed containers in a cool, dry, covered area, away from direct sunlight and sources of heat. 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.