PPG SIGMATHERM 250 Silicone Acrylic Resin Heat-resistant Coating is a heat-resistant coating of the acrylic coating family. Before entering service and being exposed to high temperature, the coating should be allowed to dry for at least 3 days at 20°C (68°F). Specifications on this page: volume solids 35 ± 2%, DFT 25-30 µm (1.0-1.2 mil), theoretical spreading rate 14.0 m²/L. Comparable products of the same brand and type: PPG SIGMATHERM 250 Silicone Acrylic Resin Heat-resistant Coating, PPG SIGMATHERM 350 Silicone Acrylic Resin Heat-resistant Coating, PPG HI-TEMP 500 One-component General-purpose Silicone Acrylic Heat-resistant Topcoat.
Source: PPG original technical data sheet (TDS) "PPG SIGMATHERM 250 Silicone Acrylic Heat-resistant Coating"; spreading rate and other values 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 | 35 ± 2% |
|---|---|
| Dry Film Thickness | 25–30 µm (1.0–1.2 mil) |
| Theoretical Spreading Rate | 14.0 m²/L |
| VOC | Maximum 597.0 g/L (approx. 5.0 lb/gal) (theoretical calculated value) |
| Density / Specific Gravity | — |
| Number of Components | One-component |
| Thinner | Thinning not recommended |
| Recoat Interval | Minimum: 18 h |
A silicone acrylic heat-resistant coating.
| Number of Components | One-component |
|---|---|
| Density | White: 1.3 kg/L (10.8 lb/US gal). |
Aluminium: 1.2 kg/L (10.0 lb/US gal).
| Volume solids | 35 ± 2% . |
|---|---|
| VOC (as supplied) | Maximum 597.0 g/L (approx. 5.0 lb/gal) (theoretical calculated value). |
| Recommended dry film thickness | 25–30 µm (1.0–1.2 mil). |
| Theoretical Spreading Rate | 14.0 m²/L (561 ft²/US gal) when applied undiluted |
| Touch Dry | 1 h |
| Recoat Interval | Minimum: 18 h. |
Maximum time: unlimited.
| Storage shelf life | At least 24 months, provided it is stored in a cool, dry environment. |
|---|
| Recommended thinner | Thinning not recommended |
|---|---|
| Nozzle tip size | 1.5–2.0 mm (approx. 0.060–0.079 in). |
| Nozzle pressure | 0.3–0.4 MPa (approx. 3–4 atm; 44–58 psi) |
| Recommended thinner | Thinning not recommended |
|---|---|
| Nozzle tip size | Approx. 0.38–0.48 mm (0.015–0.019 in). |
| Nozzle pressure | 12.0–15.0 MPa (approx. 120–150 atm; 1741–2176 psi). |
| Dry Film Thickness | Theoretical Spreading Rate |
| 25 µm (1.0 mils) | 14.0 m²/L (561 ft²/US gal) |
| 30 µm (1.2 mils) | 11.7 m²/L (468 ft²/US gal) |
| Subsequent coat for recoating | Recoat interval | 10°C (50°F) | 20°C (68°F) | 30°C (86°F) | 40°C (104°F) |
| Self-recoat | Minimum recoat interval | 24 h | 18 h | 15 h | 10 h |
| Maximum recoat interval | Unlimited | ||||
| Substrate Temperature | Touch dry (surface dry) | Hard dry |
| 10°C (50°F) | 1.5 h | 3 h |
| 20°C (68°F) | 1 h | 2 h |
| 30°C (86°F) | 45 min | 1.5 h |
| 40°C (104°F) | 30 min | 1 h |
Although PPG Protective & 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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