PPG SIGMAFAST 302 Rapid-dry Composite Epoxy Zinc Dust Coating 302 is a zinc-rich primer of the epoxy coating family. Two-component silicate-epoxy composite zinc dust primer. Cures at temperatures down to -5°C (23°F). Specifications on this page: volume solids 63 ± 2%, DFT 50-80 µm (2.0-3.1 mil) depending on system requirements, theoretical spreading rate 12.6 m²/L. Comparable products of the same brand and type: PPG SIGMAFAST 302 Rapid-dry Composite Epoxy Zinc Dust Coating 302, AMERCOAT 68 G Epoxy Zinc-rich Primer 68 G, AMERCOAT 68 HS Epoxy Zinc-rich Primer 68HS.
Source: PPG original technical data sheet (TDS) 'PPG SIGMAFAST 302 Fast-drying Composite Epoxy Zinc Powder Paint 302'. Spreading rate and other values converted from the TDS; for 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 | 63 ± 2% |
|---|---|
| Dry Film Thickness | 50–80 µm (2.0–3.1 mil) depending on the coating system requirements |
| Theoretical Spreading Rate | 12.6 m²/L |
| VOC | Max 204.0 g/kg (EU Directive 1999/13… |
| Density / Specific Gravity | 2.1 kg/L (17.5 lb/US gal) |
| Number of Components | Two-component |
| Thinner | Thinner 21-06 |
| Recoat Interval | Minimum: 25 min |
| Introduction | A two-component silicate-epoxy composite zinc powder primer |
|---|
| Number of Components | Two-component |
| Density | 2.1 kg/L (17.5 lb/US gal) |
| Volume solids | 63 ± 2% |
| VOC (as supplied) | Max 204.0 g/kg (EU Directive 1999/13/EC, SED) |
Max 419.0 g/L (approx. 3.5 lb/gal) (theoretical value)
| Recommended dry film thickness | 50–80 µm (2.0–3.1 mil) depending on the coating system requirements |
| Theoretical Spreading Rate | 12.6 m²/L at 50 µm (505 in²/US gal at 2.0 mils) |
| Touch Dry | 10 min |
| Recoat Interval | Minimum: 25 min |
Maximum: 12 months
| Storage shelf life | Base: at least 24 months stored in a dry, cool environment. Hardener: at least 24 months stored in a dry, cool environment |
|---|
Use thinner to adjust the paint viscosity to a suitable application state.
| Pot life | 4 h at 20 °C (68 °F) |
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| Recommended thinner | Thinner 21-06 |
|---|---|
| Thinner quantity | 15–20%, depending on the required film thickness and application conditions |
| Nozzle tip size | 1.6 mm (approx. 0.063 in) |
| Nozzle pressure | 0.3–0.6 MPa (approx. 3–6 atm; 44–87 psi) |
| Recommended thinner | Thinner 21-06 |
|---|---|
| Thinner quantity | 5–15%, depending on the required film thickness and application conditions |
| Nozzle tip size | Approx. 0.38–0.53 mm (0.015–0.021 in) |
| Nozzle pressure | 15.0 MPa (approx. 150 atm; 2176 psi) |
| Recommended thinner | Thinner 21-06 |
|---|---|
| Thinner quantity | 0 - 5% |
| Cleaning solvent | Thinner 90-53 |
| Dry Film Thickness | Theoretical Spreading Rate |
| 50 µm (2.0 mils) | 12.6 m²/L (505 in²/US gal) |
| 80 µm (3.1 mil) | 7.9 m²/L (326 in²/US gal) |
| Subsequent coat for recoating | Recoat interval | –5°C (23°F) | 0°C (32°F) | 10°C (50°F) | 20°C (68°F) | 30°C (86°F) |
| Can be overcoated with various two-component epoxy coatings | Minimum recoat interval | 1 h | 45 min | 30 min | 25 min | 20 min |
| Maximum recoat interval | 12 months | |||||
| Subsequent coat for recoating | Recoat interval | –5°C (23°F) | 0°C (32°F) | 10°C (50°F) | 20°C (68°F) | 30°C (86°F) |
| Overcoat with various two-component epoxies | Minimum recoat interval | 1.5 h | 1 h | 50 min | 40 min | 35 min |
| Maximum recoat interval | 12 months | |||||
| Substrate Temperature | Touch dry (fast-drying - standard) | Hard dry (fast-drying - standard) |
| -5 °C (23 °F) | 1 h | 1.5 h |
| 0 °C (32 °F) | 40 min | 1 h |
| 10 °C (50 °F) | 25 min | 50 min |
| 20 °C (68 °F) | 10 min | 40 min |
| 30 °C (86 °F) | Less than 10 min | 35 min |
Although PPG Protective and Marine Coatings is committed to providing completely consistent products to users worldwide, from time to time it may be necessary to make minor adjustments to specific products to comply with local/national regulations or environmental requirements. In the following cases, use the corresponding alternative version of the product data sheet instead.
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If the buyer fails to notify PPG of the defect as required above, this will prejudice the buyer's right to obtain compensation under this warranty from PPG!
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The information in this product data sheet is based on laboratory tests we believe to be reliable, and is provided for guidance only. PPG may revise this information at any time as experience accumulates and product development progresses.
All recommendations and advice concerning the use of this product, whether in technical documents, in response to an enquiry or otherwise, are given to the best of our knowledge and are believed to be reliable. Our products and related information are provided for industrial users possessing the necessary knowledge and practical skills, and it is the end user's responsibility to determine whether the product is suitable for the specific use. The buyer, having performed such evaluation, proceeds entirely at its own risk.
The quality and condition of the substrate on site, and the many other factors affecting product use and application, are beyond PPG's control. Therefore, PPG accepts no liability for any loss, injury or damage arising from the use of the information in this product data sheet (unless otherwise provided in a written agreement). Different application environments, changes to the application process or extrapolation of the reference data may result in failure to achieve the expected coating quality.
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