Water-borne Epoxy Zinc-rich Primer XH4724 is a zinc-rich primer in the water-borne system. A water-borne two-component epoxy zinc-rich coating used as a primer in atmospheric environments; used with other coatings, it provides good anticorrosive performance. Parameters on this page: volume solids 54 ± 2%; dry film thickness 40/60/80 µm; theoretical spreading rate 6.8 m²/L.
Parameter source: T&H original technical data sheet (TDS) for Water-borne Epoxy Zinc-rich Primer XH4724; spreading rate and other values are converted from TDS parameters and provided 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 | 54 ± 2% |
|---|---|
| Dry Film Thickness | 40/60/80 µm |
| Theoretical Spreading Rate | 6.8 m2/L |
| VOC | <130g/L |
| Density / Specific Gravity | 2.1 ± 0.2kg/L |
| Number of Components | Two-component |
| Thinner | 0-5% |
| Mixing Ratio | Base : curing agent = 2.9:1 (by weight) |
| Colour / Appearance | Zinc grey |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
Thinner: deionised water
A water-borne two-component epoxy zinc-rich coating, used as a primer in atmospheric environments; provides good anti-corrosion performance when used with other coatings.
| Colour | Zinc grey |
|---|---|
| Gloss | Matt |
| density | 2.1±0.2kg/L |
| Volume Solids | 54±2% |
| Volatile Organic Compounds | <130g/L |
| Mixing ratio | Base : curing agent = 2.9:1 (by weight) |
| Typical dry film thickness | 60µm |
|---|---|
| Recommended dry film thickness | 40–80 µm, depending on system requirements |
| Induction time (20 °C) | No induction required |
| Thinner quantity (by volume) | Airless spray 3–8% | Air spray 8–15% | Roller or brush 0–5% |
| Recommended nozzle size | 0.38~0.53mm | 1.2~3.0mm | None |
| Recommended spray pressure | 15~20MP | 0.3~0.4MPa | None |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
| Dry film thickness (µm) | 40 | 60 | 80 |
| Wet film thickness (µm) | 74 | 111 | 148 |
| Theoretical spreading rate (m²/L) | 13.5 | 9 | 6.8 |
Application data (typical dry film thickness 60 µm, RH = 55%):
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 20°C | 1h | 8h | 2h | 8h | / |
| 25°C | 1h | 6h | 2h | 6h | / |
| 30°C | 50min | 5h | 2h | 6h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
1. All surfaces to be coated must be clean, dry and free of contaminants. Before application, all surfaces must be assessed and prepared in accordance with ISO 8504:2000. 2. Abrasive blast clean to Sa 2½, with surface roughness 40–75 µm. Before rust removal, remove all oil and weld spatter and grind welds and sharp edges. Areas of the coating damaged mechanically and showing localised rust must be spot blast cleaned to Sa 2½ or cleaned with power tools to St 3 before local repair with this primer.
1. During application, ensure ventilation and exhaust, keep away from sources of ignition, and wear protective equipment such as a mask and gloves; maintain adequate ventilation also during curing. 2. When mixing, first stir the base thoroughly, then add the hardener in the specified ratio and mix well; adjust the water quantity according to application needs and temperature, stir thoroughly, and do not add too much water at once, otherwise precipitation and lumping occur. Filter through a 120-mesh screen before use, and keep stirring during use. Note: never add water directly to the zinc dust component; water may be added only after the hardener has been thoroughly mixed in, otherwise the zinc dust separates out and the paint is wasted. 3. Excessive water thinning causes flocculation and separation, or reduced sag resistance. 4. This product is suitable only for blast-cleaned steel surfaces and approved epoxy zinc dust or inorganic zinc silicate coatings; it must not be applied over other coating types. Alkyd or alkyd-modified coatings must not be applied directly over this product. 5. During application and curing, the substrate temperature must be at least 3 °C above the dew point, moisture content <8%, ambient temperature 10–35 °C, and relative humidity not more than 80%. Indoor application is preferred to ensure application quality. 6. Cutting of structures coated with this product produces fume; take appropriate protection. 7. This product is not suitable for underwater use. 8. When work is interrupted, do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with clean water. If the interruption is long, mix a fresh batch of paint for application. 9. Clean all equipment immediately after use with clean water. Note: the base, if not thoroughly emulsified with the hardener, forms flocs when water is added for cleaning, and may even block the gun. Flushing spray equipment periodically during daily work is good practice. Cleaning frequency depends on the volume sprayed, temperature, spraying time, including interruptions, and other factors. 10. Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
| 19.5 kg per set | Base 14.5 kg | Curing agent 5 kg |
Keep sealed in a ventilated, cool, dry place away from sources of ignition. Ideal storage temperature 5–35 °C; protect from freezing at 0 °C and from high temperatures. Minimum 6 months.
1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. Avoid inhaling spray mist and solvent vapours, and avoid exposing skin and eyes and contact with uncured paint as far as possible. 2. All work related to the application and use of this product must comply with the relevant national health, safety and environmental standards and regulations. 3. If welding or flame cutting is required on metal coated with this product, dust and fumes will be generated; use appropriate personal protective equipment and adequate local ventilation. 4. If in doubt about the suitability of this product, consult the company.
The information provided in this product data sheet is based on laboratory test results that we consider accurate, and is provided for application guidance only. All recommendations and advice given by T&H on the use of T&H products, whether in technical documents, special consultation or otherwise, are based on information we consider most reliable. Our products and the information provided are intended for users with the necessary knowledge and industrial experience, and it is for these end users to determine whether the products are suitable for their use. T&H cannot control the quality and condition of the substrate, nor the various factors affecting the use of the product. Therefore, T&H accepts no liability for any loss, injury or damage arising from the use of our products or from reliance on this product data sheet (unless otherwise agreed in writing). Data in this product data sheet may be revised as necessary based on practical experience and continued product development.
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.
