Hempel Epoxy Graphene Zinc-rich Primer 640 is a zinc-rich primer of the epoxy coating system. Hempaprime Ultimate 640 is suitable as a multifunctional primer in coating systems, providing long-term protection to steel in moderate to severe corrosive environments, and complies with the JT/T 722 JCX standard. After curing it forms a hard, rough coating with good corrosion resistance and meets the zinc requirements of Type II coatings in the "Graphene Zinc Dust Coatings" (HG/T 5573-2019) standard. Parameters on this page: volume solids 67 ± 2%, dry film thickness 60 µm, theoretical spreading rate 11 m²/L.
Parameter source: HEMPEL manufacturer's Technical Data Sheet (TDS) "Hempel Epoxy Graphene Zinc-rich Primer 640"; values such as spreading rate are converted from TDS parameters and are for product 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 | 67 ± 2% |
|---|---|
| Dry Film Thickness | 60 µm |
| Theoretical Spreading Rate | 11 m²/L |
| VOC | 321 g/L (China) |
| Density / Specific Gravity | 2.1 kg/L |
| Number of Components | Two-component |
| Flash Point | 26°C |
| Colour / Appearance | Grey 19840 |
| Pot Life | 1½ h |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Primer 640
Hempaprime Ultimate 640 is an active zinc-rich epoxy primer that reliably combines advanced Avantguard and graphene technology to enhance zinc activity. Cures to form a hard, rough coating with good corrosion resistance and complies with the zinc requirements for Type II coatings specified in "Graphene Zinc Dust Coatings" (HG/T 5573-2019). Complies with JT/T 722 "Technical Conditions Standard for Anticorrosive Coating of Highway Bridge Steel Structures".
Hempaprime Ultimate 640 is suitable as a multi-purpose primer in coating systems, providing long-term protection for steel in moderate to severe corrosive environments and complying with the JT/T 722 JCX standard.
| Product safety | Flash point 26 °C |
|---|
| Regulations | Value |
| European Union | 321 g/L |
| USA (coatings) | 321 g/L |
| USA (regulatory) | 321 g/L |
| China | 321 g/L |
Subject to specific legislation; see the explanatory notes on the Hempel website hempel.com or your local Hempel website. VOC values may vary with colour; refer to Section 9 of the Safety Data Sheet. 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 | 17XCN |
|---|---|
| Product components | Base 17XC9 |
Curing agent 97043
| Standard colour / code | Grey 19840 |
|---|---|
| Volume solids | 67 ± 2% |
| density | 2.1 kg/L |
| Recommended dry film thickness | 60 µm |
For further details, refer to the separate Hempel document Surface Preparation Guide.
Base 17XC9 : Hardener 97043 (85 : 15 by volume)
Keep dilution to a minimum. Products containing floating or settling particles/pigments require continuous agitation during application, which is particularly important if over-thinning occurs.
Below 20°C [68°F] HEMPEL Thinner 08510
Cleaning solvent
(Not defined)
| Product temperature | 20°C | 0°C | 40°C |
| Pot Life | 4 h | 5 h | 1½ h |
| Tools | Maximum thinning volume | Application parameters |
| Airless Spray | 10% | Nozzle pressure: 22 MPa; nozzle size: 0.43–0.53 mm |
| Air Spray | 20% | Not applicable. |
| Brush/roller | 10% | Not applicable. |
If brush or roller application is used, several coats may be required to achieve the specified dry film thickness. 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 | 50 µm | 100 µm | 60 µm |
| Wet Film Thickness | 75 µm | 149 µm | 90 µm |
| Theoretical Spreading Rate | 13 m²/L | 6.7 m²/L | 11 m²/L |
Excessive thickness must be strictly controlled; local thickness must never exceed 200 µm [8.0 mil] DFT. Where surfaces are irregular, particular care is recommended to avoid excessive application. Depending on use and service area, the product may be specified at film thicknesses other than those indicated. This will change the spreading rate, drying and curing times, and recoat interval.
| Surface temperature | -10°C | 0°C | 20°C | 40°C |
| Touch Dry | 50 min | 30 | 10 | 5 |
| Surface Dry | 2½ h | 1⅔ | ¾ | ⅓ |
| Hard Dry | 4½ h | 3 | 1½ | ½ |
| Through dry | 21 h | 5 | 1½ | ½ |
Measured at 60 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 | 0°C | 20°C | 40°C | |
| Atmospheric, mild | |||||
|---|---|---|---|---|---|
| HEMPEL High-Build Epoxy 47550 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | Extendable* | ||||
| HEMPEL's High-solids Epoxy 500 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | Extendable* | ||||
| Atmospheric, moderate | |||||
| HEMPEL High-Build Epoxy 47550 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | Extendable* | ||||
| HEMPEL's High-solids Epoxy 500 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | Extendable* | ||||
| Atmospheric, severe | |||||
| HEMPEL High-Build Epoxy 47550 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | 90 days | 30 days | 7 days | ||
| HEMPEL's High-solids Epoxy 500 | Minimum | 3 h | 90 min | 45 min | 25 min |
| Maximum | 84 days | 63 days | 21 days | 5 days | |
Extendable* Depending on the actual exposure conditions, the coated surface may be recoated after an extended time. Contact your local Hempel representative for advice.
For products of the same generic chemical composition, recoat times are for reference only.
For further information, refer to Hempel's specifications.
| Ambient temperature | 25°C |
| Binder | 12 months |
| Curing agent | 36 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. 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) | 11 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.
For further information, refer to the Hempel website (https://www.hempel.com/service-and-support/technical-guidelines) or your local Hempel website:
| 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.
