Epoxy Zinc Phosphate Primer XH4018 is an epoxy paint, used as a primer. Used as a high-performance anti-corrosive primer for corrosion protection of steel facilities and equipment in harsh environments such as petrochemical plants, chemical plants and power plants. Parameters on this page: volume solids 60 ± 2%, dry film thickness 50/80/100 µm, theoretical spreading rate 5.9 m²/L.
Parameter source: T&H manufacturer's Technical Data Sheet (TDS) "Epoxy Zinc Phosphate Primer XH4018"; spreading rate and other values are converted from the 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 | 60 ± 2% |
|---|---|
| Dry Film Thickness | 50/80/100 µm |
| Theoretical Spreading Rate | 5.9 m2/L |
| VOC | 410g/L |
| Density / Specific Gravity | 1.45 kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 5-15% |
| Mixing Ratio | Base : curing agent = 8:1 (by weight), 82:18 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component high-build epoxy zinc phosphate primer. Used as a high-performance anti-corrosive primer for corrosion protection of steel facilities and equipment in harsh environments such as petrochemical plants, chemical plants and power plants.
| Colour | Iron red, grey |
|---|---|
| Gloss | N/A |
| density | 1.45 kg/L |
| Volume Solids | 60±2% |
| Volatile Organic Compounds | 410g/L |
| Flash Point | 25°C |
| Mixing ratio | Base : curing agent = 8:1 (by weight), 82:18 (by volume) |
| Typical dry film thickness | 80µm |
|---|---|
| Recommended dry film thickness | 50–100 µm, depending on system requirements |
| Induction time (20 °C) | 10~15min |
| Thinner quantity (by volume) | Airless spray 0–15% | Air spray 5–20% | Roller or brush 5–15% |
| Recommended nozzle size | 0.43~0.64mm | 1.5~2.5mm | / |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | / |
| Application suitability | Recommended | Applicable | For small-area repair only |
*Use a slow thinner in hot weather
| Dry film thickness (µm) | 50 | 80 | 100 |
| Wet film thickness (µm) | 85 | 136 | 170 |
| Theoretical spreading rate (m²/L) | 11.8 | 7.4 | 5.9 |
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 5°C | 90min | 24h | 6h | 48h | / |
| 15°C | 50min | 16h | 5h | 24h | / |
| 25°C | 30min | 8h | 4h | 12h | / |
| 40°C | 20min | 4h | 2h | 8h | / |
*The maximum recoat interval depends on the exposure environment and the end use of the coating.
All surfaces to be coated shall be clean, dry and free of contaminants. Before coating, all surfaces shall be assessed and treated in accordance with ISO 8504:2000. Blast clean to Sa 2½ with a surface roughness of 40–75 µm. Before rust removal, all oil, grease and weld spatter shall be removed and welds and sharp edges ground. Where the film of this coating is mechanically damaged or shows local rusting, blast clean the affected area to Sa 2½ or power tool clean to St 3 before local repair.
1. During application, ensure adequate ventilation and exhaust, keep away from sources of ignition, and wear protective equipment such as masks and gloves; maintain adequate ventilation also during curing. 2. Before mixing the two components, stir the base component thoroughly with a power tool, then add the hardener and mix uniformly; adjust the amount of thinner according to application needs and temperature changes, mix thoroughly, and induce for 10–15 min before application. 3. This product only develops its anti-corrosion performance when applied over blast-cleaned surfaces; low film thickness should not be applied on high-roughness surfaces, otherwise the coating cannot completely cover the substrate and the expected anti-corrosion performance will not be achieved. 4. This product is not recommended as a primer for immersed coating systems for underwater, chemical-resistant or oil-resistant applications; the zinc ions may even affect the quality of certain jet fuels. 5. If the coating chalks after long-term exposure, wash with high-pressure water or sand the surface before applying the subsequent coating. 6. The recommended film thickness per coat of this product shall not exceed 120 µm, otherwise the surface smoothness will increase and affect overcoating of subsequent coats. 7. During application and curing, the substrate temperature must be above 5 °C and at least 3 °C above the dew point, and the relative humidity must not exceed 85%. Temperature and relative humidity shall be measured on the substrate close to the work point. 8. Cutting structures coated with this coating produces fumes and dust; appropriate protection shall be used. 9. When work is interrupted, do not leave paint in the hose, spray gun or spray equipment. Flush all equipment thoroughly with thinner. If the interruption is too long, it is recommended to mix a fresh batch of paint for application. 10. All equipment shall be cleaned with thinner immediately after use. Flushing the spray equipment periodically during daily work is good practice. The cleaning frequency depends on spray volume, temperature, spraying time and interruptions. 11. Leftover paint and empty cans shall be disposed of according to local regulations.
| 22.5 kg per unit | Base 20 kg | Curing agent 2.5 kg |
| 15 L per unit | Base 12.3 L | Curing agent 2.7 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.
