PPG SIGMADUR 520 Polyurethane Topcoat 520 is a polyurethane coating used as a topcoat. Two-component high-build semi-gloss aliphatic acrylic polyurethane topcoat. Good colour and gloss retention (the aluminium version may tend towards grey over time). Specifications on this page: volume solids white 58% ± 2% / aluminium 48% ± 2%, DFT 50-75 µm (2.0-3.0 mil) depending on system requirements, theoretical spreading rate 11.6 m²/L. Comparable products of the same brand and type: AMERCOAT 450H Aliphatic Polyurethane Topcoat 450 H, AMERCOAT 450S Aliphatic Polyurethane Topcoat 450 S, PPG SIGMADUR 188 Polyurethane Topcoat 188.
Parameter source: PPG original technical data sheet (TDS) "PPG SIGMADUR 520 Polyurethane Topcoat 520"; values such as spreading rate are converted from TDS parameters and are for selection 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 | White 58% ± 2% / Aluminium 48% ± 2% |
|---|---|
| Dry Film Thickness | 50–75 µm (2.0–3.0 mil) depending on the coating system requirements |
| Theoretical Spreading Rate | 11.6 m²/L |
| VOC | EU standard Directive 1999/13/EC, SED: maximum 2… |
| Density / Specific Gravity | — |
| Number of Components | Two-component |
| Thinner | Thinner 21-06 |
| Recoat Interval | Minimum time: 6 h; maximum time: unlimited |
| Introduction | Two-component high-build aliphatic acrylic polyurethane semi-gloss topcoat |
|---|
| Number of Components | Two-component |
| Density | White: 1.4 g/L (11.7 lb/US gal) |
Aluminium: 1.1 g/L (9.2 lb/US gal)
| Volume solids | White: 58 ± 2%; aluminium: 48 ± 2% |
|---|---|
| VOC (as supplied) | EU standard Directive 1999/13/EC, SED: maximum 287 g/kg (white); maximum 377 g/kg (Directive 1999/13/EC, SED) (white) | maximum 491 g/kg (EU standard Directive 1999/13/EC, SED) (aluminium); theoretically calculated maximum 383.0 g/L (approx. 3.2 lb/gal) (white); maximum 405.0 g/L (approx. 3.4 lb/gal) (white); maximum 405 g/L (approx. 3.4 lb/gal) (aluminium powder) |
| Recommended dry film thickness | 50–75 µm (2.0–3.0 mil) depending on the coating system requirements |
| Theoretical Spreading Rate | White: 11.6 m²/L at 50 µm (465 ft²/US gal at 2.0 mils) |
Aluminium: 9.6 m²/L at 50 µm (385 ft²/US gal at 2.0 mils)
| Touch Dry | 1 h |
| Recoat Interval | Minimum time: 6 h; maximum time: unlimited |
| Full cure time Parameters after mixing | 4 days |
| Storage shelf life | Base: at least 36 months; store in a dry and cool environment |
Curing agent: at least 24 months; store in a dry and cool environment
adjust to a state suitable for site application.
| Pot life | 5 h at 20 °C (68 °F). Note: see supplementary parameters — pot life after mixing |
|---|
| Recommended thinner | Thinner 21-06 |
|---|---|
| Thinner quantity | 5–10%, depending on the required film thickness and application conditions |
| Nozzle tip size | 1.0–1.5 mm (approx. 0.040–0.060 in) |
| Nozzle pressure | 0.3–0.4 MPa (approx. 3–4 atm; 44–58 psi) |
| Recommended thinner | Thinner 21-06 |
|---|---|
| Thinner quantity | 0–5%, depending on the required film thickness and application conditions |
| 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) | 11.6 m²/L (465 in²/US gal) |
| 75 µm (3.0 mils) | 7.7 m²/L (310 in²/US gal) |
| Dry Film Thickness | Theoretical Spreading Rate |
| 50 µm (2.0 mils) | 9.6 m²/L (385 in²/US gal) |
| 75 µm (3.0 mils) | 6.4 m²/L (257 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) | 40°C (104°F) |
| Self-recoat | Minimum recoat interval | 24 h | 16 h | 8 h | 6 h | 5 h | 3 h |
| Maximum recoat interval | Unlimited | ||||||
| Notes | The surface must be clean, dry and free of all contaminants. |
|---|
| Substrate Temperature | Hard dry | Fully cured |
| -5 °C (23 °F) | 24 h | 15 days |
| 0 °C (32 °F) | 16 h | 11 days |
| 10 °C (50 °F) | 8 h | 6 days |
| 20 °C (68 °F) | 6 h | 4 days |
| 30 °C (86 °F) | 5 h | 3 days |
| 40 °C (104 °F) | 3 h | 48 h |
| Mixed paint temperature | Pot life |
| 10 °C (50 °F) | 7 h |
| 20 °C (68 °F) | 5 h |
| 30 °C (86 °F) | 3 h |
| 40 °C (104 °F) | 2 h |
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.
PPG warrants (1) that it has good title to the product, (2) that the product quality conforms to the relevant technical quality specifications in force at the date of manufacture of the product, and (3) that the supplied product is free of lawful claims by third parties for infringement of US patent rights. The above warranties are limited to those given by PPG and other express or implied warranties required by applicable laws and regulations for transactions and commercial practice; any abuse contrary to the stated conditions, and any other warranty for special purposes or uses, are excluded, and PPG shall be free from liability. To claim under this warranty, the buyer must notify PPG in writing within five (5) days of discovering the quality defect, and the date must be within the product's valid storage period or within one (1) year from delivery of the product to the buyer.
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!
In all cases, PPG shall not be liable for any indirect, special, incidental or consequential loss of any kind arising from or in connection with the use of this product (whether based on negligence, strict liability or tort).
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.
This product data sheet supersedes all previous versions. The buyer is responsible for confirming that the data sheet in hand is the latest version before using the product. The latest version is published on the official website of PPG Protective & Marine Coatings:
www.ppgpmc.com. In case of discrepancy between the Chinese version and the original English version of the product data sheet, the English original shall prevail.
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Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
