Fast-Dry Zinc Phosphate Epoxy Primer XH4070 is an epoxy paint used as a primer. For anti-corrosion applications requiring fast drying and recoating, it achieves relatively fast drying even at temperatures below 5°C while maintaining a long pot life and coating flexibility. Parameters on this page: volume solids 70 ± 2%, dry film thickness 80/100/120 µm, theoretical spreading rate 5.7 m²/L.
Parameter source: T&H original technical data sheet (TDS) "Fast-drying Epoxy Zinc Phosphate Primer XH4070"; 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 | 70 ± 2% |
|---|---|
| Dry Film Thickness | 80/100/120 µm |
| Theoretical Spreading Rate | 5.7 m2/L |
| VOC | 290g/L |
| Density / Specific Gravity | 1.55 kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-10% |
| Mixing Ratio | Base : curing agent = 10:1 (by weight), 85:15 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
High-solids fast-dry epoxy primer. For anti-corrosion applications requiring fast drying and recoating; achieves relatively fast drying at temperatures below 5°C while maintaining a long pot life and coating flexibility.
| Colour | Grey |
|---|---|
| Gloss | N/A |
| density | 1.55 kg/L |
| Volume Solids | 70±2% |
| Volatile Organic Compounds | 290g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 10:1 (by weight), 85:15 (by volume) |
| Typical dry film thickness | 100µm |
|---|---|
| Recommended dry film thickness | 80–120 µm, depending on system requirements |
| Induction time (20 °C) | 10-15min |
| Thinner quantity (by volume) | Airless spray 0–5% | Air spray 5–15% | Roller or brush 0–10% |
| Recommended nozzle size | 0.43~0.65mm | 2.0~3.0mm | None |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | None |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
*In high-temperature seasons, a slow-drying thinner may be used as appropriate
| Dry film thickness (µm) | 80 | 100 | 120 |
| Wet film thickness (µm) | 114 | 142 | 171 |
| Theoretical spreading rate (m²/L) | 8.5 | 6.8 | 5.7 |
Coating data with XH7323-48 (this hardener is not suitable for application environments above 30°C)
| Temperature | Surface Dry | Hard Dry | Fully cured | Pot Life | Recoat interval | |
| Minimum | Maximum* | |||||
| -5°C | 20h | 40h | / | 2h | 48h | / |
| 0°C | 8h | 16h | 28d | 2h | 24h | / |
| 5°C | 4h | 8h | 14d | 2h | 24h | / |
| 15°C | 2h | 4h | 10d | 2h | 12h | / |
| 25°C | 1h | 3h | 7d | 1.5h | 12h | / |
Coating data with XH7323-42 (this hardener is suitable for application environments above 10°C)
| Temperature | Surface Dry | Hard Dry | Fully cured | Pot Life | Recoat interval | |
| Minimum | Maximum* | |||||
| 5°C | 4h | 16h | 14d | 4h | 24h | / |
| 15°C | 2h | 8h | 10d | 3h | 12h | / |
| 25°C | 1h | 6h | 7d | 2h | 12h | / |
| 40°C | 40min | 4h | 7d | 1h | 8h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
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. When used as a primer, blast clean the substrate 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. When applied over other existing coatings, remove chalk, zinc salts, grease and other contaminants by suitable methods. When applied over inorganic zinc silicate primers or metal spray surfaces, use an approved tie coat or transitional coat.
1. Ensure ventilation and air extraction during application, keep away from ignition sources, and wear protective equipment such as masks and gloves; maintain adequate ventilation during curing. 2. Before mixing, stir the base component until uniform, then add the hardener at the specified ratio and mix uniformly; adjust the thinner quantity according to application requirements and temperature changes, stir well and allow to induce. 3. When applying over inorganic zinc silicate coatings, seal with a tie coat; this product may be applied only after the tie coat has hard dried, otherwise the sealing effectiveness is reduced. 4. Excessive thinning reduces sag resistance and slows curing; applying a thick film after excessive thinning also increases the risk of coating cracking. 5. Excessive film thickness seriously affects drying and curing, recoating properties and handling time. For improved coating performance, film thickness above 150 µm shall be achieved by multiple coats to increase coating density. Avoid excessive thickness in a single coat at edges, corners and welds of structural components; where such areas have been over-applied, extend the recoating interval of subsequent coats to ensure solvent evaporation from the coating, otherwise cracking may occur during service. 6. After long-term exposure, if chalking occurs on the coating, clean with high-pressure water or abrade the surface before applying subsequent coats. 7. Roller application cannot achieve high film thickness and a continuous film in a single coat; multiple coats are required. 8. During application and curing, substrate temperature must be at least 3°C above the dew point, relative humidity shall not exceed 85%, and the paint temperature shall not be below 5°C. 9. When ambient temperature at the application site is below 10°C, switch to XH7323-48 low-temperature fast-dry epoxy hardener. 10. Cutting structures coated with this paint generates fume and dust; appropriate protection shall be provided. 11. During work breaks, do not leave paint in hoses, spray guns or spray equipment. Flush all equipment thoroughly with thinner. If the break is prolonged, mix a fresh batch of paint for application. 12. Clean all equipment with thinner immediately after use. Flushing spray equipment at regular intervals during daily work is good practice. Cleaning frequency depends on spray volume, temperature and spraying time, including interruption time
and other factors. 13. Residual paint and empty containers shall be disposed of in accordance with applicable regional regulations.
| 24.2 kg per unit | Base 22 kg | Curing agent 2.2 kg |
| 15.5 L per unit | Base 13.3 L | Curing agent 2.2 L |
Keep sealed in a ventilated, cool, dry place away from sources of ignition. Minimum 12 months.
1. For the coating and its recommended thinners, see the safety sheets and the safety data of the relevant materials. This is a solvent-borne coating; 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.
Factory item numbers for Fast-Dry Zinc Phosphate Epoxy Primer XH4070 are as follows.Item No.is the most accurate form when ordering;Colour/colour codecorresponds to the actual colour (RAL, GSB are colour chart codes);Packaging SpecificationsFactory complete-set specification format. Colors not listed may be ordered against the colour card.
| Item No. | Colour / colour code | Packaging Specifications |
|---|---|---|
| XH4070 | — | 24.2kg |
This model has a total of1item numbers, all listed on this page; colours outside the table (including special colours and bulk packaging) can be confirmed by phone, delivery dates are advised according to the factory's current production schedule and stock. In the packaging specification, the "+" indicates the complete-set notation for two-component products (base + curing agent), subject to the factory specification; a "—" in the colour column denotes an auxiliary product, or that the item has no colour code in the factory system.
