Hempel Reinforced Phenolic Epoxy Glass Flake 640 belongs to glass flake coatings, epoxy coating system. Suitable for various markets, including but not limited to: oil and gas (onshore and offshore), chemical, power generation, mining, pulp and paper, and water and wastewater treatment. Resistant to crude oil/water mixtures containing CO2 and H2S up to 120 °C [250 °F] and 70 bar (1,000 psi). Parameters on this page: volume solids 100%, dry film thickness 500 µm, theoretical spreading rate 2 m²/L. Comparable products from the same brand: Hempel Phenolic Epoxy Vinyl Ester Glass Flake 740, Hempel Solvent-free Phenolic Epoxy Lining 430, Hempel Solvent-free Phenolic Epoxy Lining 630.
Parameter source: HEMPEL original technical data sheet (TDS) "Hempel Reinforced Phenolic Epoxy Glass Flake 640"; 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 | 100% |
|---|---|
| Dry Film Thickness | 500 µm |
| Theoretical Spreading Rate | 2 m²/L |
| VOC | 24 g/L (China) |
| Density / Specific Gravity | 1.3 kg/L |
| Number of Components | Two-component |
| Flash Point | 75°C |
| Colour / Appearance | Light Blue 36641 * |
| Gloss | Semi-gloss |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Glass Flake Coating 640
Hempel Reinforced Phenolic Epoxy Glass Flake 640 is a high-performance phenolic epoxy lining with added glass flakes. This product has 100% solids, can be applied at high film thickness, and provides high-temperature and chemical resistance under long-term immersion conditions.
Withstands crude oil/water mixtures containing CO2 and H2S at up to 120 °C [250 °F] and 70 bar (1,000 psi).
May be sprayed in one pass with a single-leg airless pump, and can be put into service within 72 hours. May also be used to build glass-fibre-reinforced lining systems.
According to API 652/653, as a thick-film reinforced lining, the inspection interval can be extended by 5 years.
Used as a lining for new tanks, process vessels and pipelines, or for maintenance.
Resistant to a wide range of chemicals, including but not limited to: sour crude oil, refined hydrocarbons, aviation fuel, gasoline (petroleum) blends, biofuels (and feedstocks), MTBE, produced water, alcohols, aliphatic and aromatic solvents, certain caustic solutions, acidic solutions and aqueous solutions.
Suitable for various markets, including but not limited to: oil and gas (onshore and offshore), chemical, power generation, mining, pulp and paper, and water and waste water treatment.
Only the following colour codes are available for chemical resistance/lining application: 10000 (white), 36641 (light blue), 49500 (light green). For full details, refer to cpg.hempel.com.
This product is also suitable for the external surface of buried pipelines (carbon steel and stainless steel) and complies with APCS-113A. For more information, contact Hempel.
| Product safety | Flash point 75 °C |
|---|
| Regulations | Value |
| European Union | 24 g/L |
| USA (coatings) | 24 g/L |
| USA (regulatory) | 24 g/L |
| Canada | 24 g/L |
| China | 24 g/L |
| Hong Kong | 24 g/L |
| South Korea | 24 g/L |
Subject to specific legislation; see the explanatory notes on the Hempel website hempel.com or your local Hempel website. This product complies with the VOC requirements of national mandatory or recommended standards; consult the company representative for details.
Handle with care. Before and during use, observe the safety labels on the packaging and paint containers and comply with all local and national safety regulations. Consult the Hempel Safety Data Sheet and Product Data Sheet for the product at all times.
For professional use only.
| Product code | 37830 |
|---|---|
| Product components | Base 37839 |
Curing Agent 9780S
| Standard colour / code | Light Blue 36641 * |
|---|---|
| Gloss | Semi-gloss |
| Volume solids | 100% |
|---|---|
| density | 1.3 kg/L |
| Recommended dry film thickness | 500 µm |
- Abrasive blast clean to Sa 2½ (ISO 8501-1) / SP 10 (SSPC) / NACE No.2 minimum.
For further details, refer to the separate Hempel document Surface Preparation Guide.
Base 37839 : Curing agent 9780S (3 : 1 by volume)
Stir thoroughly before use. Thinning is not permitted.
Thinner
| Cleaning solvent | HEMPEL's Tool Cleaner 99610 |
|---|
| Product temperature | 20°C | 10°C | 30°C |
| Pot Life | 50 min | 70 min | 20 min |
| Tools | Maximum thinning volume | Application parameters |
| Airless Spray | No thinning required | Nozzle pressure: 20 MPa; nozzle size: 0.53–0.74 mm |
| Brush/roller | No thinning required | - |
If brush or roller application is used, several coats may be required to achieve the specified dry film thickness. For tank linings, brush and roller application must be limited to touch-up, repair areas or minor repairs. Spray parameters are indicative and may be adjusted to suit site conditions. Pressure figures apply to the material at 20 °C. (*For other application methods, consult the company representative.)
| Specification range | Low | High | Recommended |
| Dry Film Thickness | 300 µm | 750 µm | 500 µm |
| Wet Film Thickness | 301 µm | 752 µm | 502 µm |
| Theoretical Spreading Rate | 3.3 m²/L | 1.3 m²/L | 2 m²/L |
Depending on the end use and service area, the product may be specified at film thicknesses other than those indicated. This will alter the spreading rate, drying and curing times and recoat interval. To achieve optimum performance, avoid excessive film thickness.
| Surface temperature | 10°C | 20°C | 30°C | 40°C |
| Touch Dry | 8 h | 4 | 2 | 1 |
| Hard Dry | 24 h | 12 | 5 | 2½ |
| Fully cured | 7 days | 3 | 2 | 1 |
Measured at 500 µm dry film thickness under standard conditions; see Hempel's explanatory notes.
Hempel's specifications supersede all guidance shown in the recoat table.
| Product name | 10°C | 20°C | 30°C | 40°C |
| Immersion | ||||
|---|---|---|---|---|
| Hempel Reinforced Phenolic Epoxy Glass Flake | 8 h | 4 h | 2 h | 60 min |
| 640 | 30 days | 21 days | 14 days | |
Recoat times are for reference only for products of the same generic chemical composition at the recommended dry film thickness (DFT).
For further information, refer to Hempel's specifications.
- To achieve the stated drying times, adequate ventilation during application, drying and curing is essential.
For tank linings storing crude oil or aliphatic refined products (such as diesel or kerosene) (refer to the chemical resistance guide), the lining reaches the service-ready cure standard after 24 hours of curing at 25 °C and above. For all other chemicals (including gasoline), the full cure times in the table above shall be strictly followed.
- For tank linings, if the maximum recoat interval is exceeded, roughen the surface by blasting to ensure intercoat adhesion.
- Epoxy coatings have an inherent tendency to chalk, fade and discolour; this does not affect coating performance.
| Ambient temperature | 25°C |
| Binder | 18 months |
| Curing agent | 18 months |
When stored in unopened original containers, shelf life is counted from the date of production. Thereafter, the product quality must be re-inspected. Storage at high temperatures may shorten the shelf life. The shelf life stated on the product label is determined according to local climatic conditions. For advice, consult Hempel.
- Store the product in accordance with the Safety Data Sheet, label and local regulations. Keep containers in a dry, cool, well-ventilated place away from heat and sources of ignition. Keep containers tightly closed. Handle with care.
| Dry Film Thickness | 1 µm | |
| GWP (Global Warming Potential) | 6.8 g CO₂e/m² |
Carbon footprint is based on a 1 µm dry film thickness formed over a surface area of 1 m².
The scope includes raw materials, transport to the Hempel factory, the Hempel production process, and any volatile organic compounds (VOC) emitted during and after use of the product.
Calculated based on the standard colours defined in this PDS. Values may vary with colour.
More information is available at the Knowledge Centre: https://www.hempel.com/knowledge-center. The following documents are in the “Technical Guidelines” section:
https://www.hempel.com/knowledge-center/technical-guidelines Hempel
| Number | Document description | Location/Notes |
| 3. | PDS | This document |
datasheet, which is also available for download at www.hempel.com.
This Product Data Sheet (“PDS”) relates to the product supplied (the “Product”), and its content is updated from time to time. Accordingly, the buyer/applicator should refer to the PDS supplied with the relevant batch of product (rather than an earlier version). In addition to the PDS, the buyer/applicator may receive some or all of the specifications, declarations and/or guides shown below, which are also available for download from the “Products” page of the Hempel website (www.hempel.com) (hereinafter the “Supplementary Documents”):
| 1. | Technical declaration | Provides one-off specific advice for the requirements of a specific project |
| 2. | Specifications | Issued for specific projects only |
| 4. | Explanatory notes to the PDS | Available for download at www.hempel.com, containing information related to product test parameters |
| 5. | Application guide | If available, provided at www.hempel.com |
| 6. | General technical guidelines (e.g. application and surface preparation) |
If the information in the PDS and the supplementary documents is inconsistent, the information shall take precedence in the order listed above. In this case, contact the Hempel representative for clarification. In addition, the buyer/applicator must give full consideration to the relevant safety information accompanying each product. Hempel accepts no liability for any defects arising from application not carried out fully in accordance with the recommendations and requirements of the relevant PDS and supplementary documents. The information and terms in this disclaimer apply to this PDS, the supplementary documents and any other relevant documents provided by Hempel for this product. In addition, unless otherwise expressly agreed in writing, supply of the product and all technical support are subject to Hempel's General Conditions of Sale, Delivery and Service.
Information is subject to the manufacturer's latest version; the manufacturer's latest TDS prevails.
The technical parameters on this page are taken from the product's original manufacturer technical datasheet, the copyright of which belongs to the manufacturer. If a rights holder considers the presentation inappropriate, contact us for verification and handling.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
