Phenolic Epoxy Heat- and Medium-Resistant Coating XH4218 is a high-temperature coating, in the epoxy coating system. Used for corrosion protection of the interior walls of tanks and pipes for crude oil, petroleum intermediates and some finished products, MTBE, aliphatic hydrocarbons and some aromatic hydrocarbon solvents; it can also be used for corrosion protection under pipe insulation. Parameters on this page: volume solids 72 ± 2%, dry film thickness 50/80/100 µm, theoretical spreading rate 7 m²/L.
Parameter source: T&H manufacturer's Technical Data Sheet (TDS) "Phenolic Epoxy Heat- and Chemical-resistant Coating XH4218"; 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 | 72 ± 2% |
|---|---|
| Dry Film Thickness | 50/80/100 µm |
| Theoretical Spreading Rate | 7 m2/L |
| VOC | ≤300g/L |
| Density / Specific Gravity | 1.4kg/L |
| Number of Components | Two-component |
| Flash Point | 25°C |
| Thinner | 0-15% |
| Mixing Ratio | Component A : Component B = 5.6:1 (by weight), 79:21 (by volume) |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
A two-component high-build phenolic epoxy coating. Used for corrosion protection of the interior walls of tanks and pipes for crude oil, petroleum intermediates and some finished products, MTBE, aliphatic hydrocarbons and some aromatic hydrocarbon solvents; it can also be used for corrosion protection under pipe insulation. Long-term heat resistance under dry conditions up to 200 °C, with a short-term maximum heat resistance of 230 °C.
| Colour | White or grey |
|---|---|
| Gloss | N/A |
| density | 1.4kg/L |
| Volume Solids | 72±2% |
| Volatile Organic Compounds | ≤300g/L |
| Flash Point | 25°C |
| Mixing ratio | Component A : Component B = 5.6:1 (by weight), 79:21 (by volume) |
| Typical dry film thickness | 100µm×2 |
|---|---|
| Recommended dry film thickness | 200 µm (100 µm × 2) – 400 µm (100 µm × 4), depending on system requirements |
| Induction time (20 °C) | 10~15min |
| Airless Spray | Air Spray | Roller or brush | ||
| Thinner quantity (by volume) | 0-10% | 5-15% | 0-15% | |
| Recommended nozzle size | 0.43~0.64 | m | 2.0~3.0mm | / |
| Recommended spray pressure | 15~20MPa | 0.3~0.6MPa | / | |
| Application suitability | Recommended | Applicable | Suitable for small-area repair |
| Dry film thickness (µm) | 50 | 80 | 100 |
| Wet film thickness (µm) | 71 | 114 | 143 |
| Theoretical spreading rate (m²/L) | 14.1 | 8.8 | 7 |
| Temperature | Surface Dry | Hard Dry | Pot Life | Recoat interval | |
| Minimum | Maximum* | ||||
| 10°C | 10h | 24h | 3h | 24h | / |
| 20°C | 3h | 20h | 2h | 24h | / |
| 35°C | 2h | 12h | 1.5h | 12h | / |
*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 from contaminants. Before coating, all surfaces must 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, remove all oil and welding spatter from the surface and grind weld seams and sharp edges. For coated surfaces with mechanical damage and localised rust,
local blast cleaning to Sa 2½ or power tool cleaning to St 3 must be carried out before local repair. If the coating is to be applied over an approved old coating surface, the chalking or zinc salts must be thoroughly removed before applying the product.
1. During application, ensure ventilation and exhaust, keep away from sources of ignition, and wear protective equipment such as masks and gloves; adequate ventilation should also be maintained during curing. 2. Before mixing Components A and B, stir Component A thoroughly with a power tool, then add the curing agent and mix thoroughly; adjust the amount of thinner according to application needs and temperature changes, stir thoroughly and induce for 10~15 min before application. 3. Do not use paint that has exceeded its pot life, otherwise the chemical resistance of the coating will be seriously affected. The grey product coating may discolour in some acidic media, but this does not affect the anticorrosive performance of the coating. 4. During application and curing, the substrate temperature must be above 10 °C and at least 3 °C above the dew point, and the relative humidity must not exceed 85%. Temperature and relative humidity must be measured on the substrate near the work area. The paint temperature during application must not be below 10 °C. 5. The recommended single-coat thickness of the product should not exceed 120 µm; otherwise, retained solvent in the coating will affect chemical resistance. Multiple coats help reduce coating defects and improve anticorrosive performance. The film must cure for 7-10 days at room temperature before use; at lower temperatures, the curing time must be extended (14-21 days) or heating used to increase the degree of cure. Do not use the product below 10 °C. 6. If applying the product over an inorganic zinc silicate primer, an MEK test must be carried out to ensure the primer is fully cured. 7. Cutting structures coated with this product produces smoke and dust; take appropriate protection. 8. When work is interrupted, do not leave the coating in hoses, spray guns or spray equipment. Flush all equipment thoroughly with thinner. If the interruption is too long, mix a fresh batch of paint for application. 9. All equipment should be cleaned with thinner immediately after use. Periodic flushing of spray equipment during the working day is good practice. The cleaning frequency depends on spray volume, temperature, spray time and factors including interruptions. 10. Surplus paint and empty containers must be disposed of in accordance with the relevant regional regulations.
| 21.8 kg per kit | Component A (base) 18.5 kg | Component B (curing agent) 3.3 kg |
| 15.5 L per unit | Component A (base) 12.2 L | Component B (curing agent) 3.3 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.
