HI-AQU 8495 waterborne epoxy zinc-rich primer is a zinc-rich primer of the waterborne system. 0000 excellent anti-corrosive performance and application properties, meeting the technical requirements of type II, class 2 of HG/T3668-2009. 220 g/L. The surface to be coated should be clean, dry and free of contamination. Parameters on this page: volume solids 50 ± 2%, dry film thickness 40-80 µm, theoretical spreading rate 0.23 kg/m².
Source: nippon-pc original technical data sheet (TDS) "HI-AQU 8495 Waterborne Epoxy Zinc-Rich Primer"; values such as spreading rate are converted from the 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 | 50 ± 2% |
|---|---|
| Dry Film Thickness | 40-80µm |
| Theoretical Spreading Rate | 0.23 kg/m² |
| VOC | 220 g/L. The surface to be coated should be clean, dry and uncontaminated. Surface assessment and preparation should follow IS… |
| Density / Specific Gravity | 2.3kg/L |
| Number of Components | Two-component |
| Thinner | Deionised water |
| Mixing Ratio | Base : curing agent = 4:1 (by mass) |
| Colour / Appearance | Zinc grey |
For more Q&A on selection, application, acceptance and defect diagnosis, seeFAQsection.
HI-AQU 8495 Water-borne Epoxy Zinc-rich Primer is a two-component, fast-drying water-borne epoxy paint with high
As an eco-friendly water-borne zinc-rich primer with high anticorrosive performance, it provides long-term corrosion protection for steel structures in new construction and maintenance under medium to severe atmospheric corrosion, applicable to bridges, petrochemical, municipal engineering, power industry, port machinery and mining equipment.
| Colour | Zinc grey |
|---|
| Solids content (by volume) | 50±2% |
|---|---|
| density | 2.3kg/L |
| VOC content | 220 g/L. The surface to be coated should be clean, dry and uncontaminated. Surface assessment and preparation should follow ISO 8504. Oil and |
Remove oil and grease in accordance with SSPC-SP1 solvent cleaning.
Abrasive blast clean to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6 (SSPC-SP10 gives better results). If the blasted surface oxidises before application, it must be re-prepared to the specified standard. Surface defects exposed after blasting must be ground, filled or otherwise suitably treated. Surface roughness should be 40–75 µm.
Shop-primed surfaces: the product may be overcoated on unrusted inorganic zinc silicate shop primer; before coating, welds and damaged areas shall be blast-cleaned to Sa2½ (ISO 8501-1:2007) or SSPC-SP6 (or SSPC-SP10 for better results). If the shop primer shows extensive breakdown or heavy rusting, the whole surface shall be blasted. When the product is applied over a shop-primed surface, compatibility and adhesion shall be tested to ensure performance.
Repair of damaged areas: damaged areas must be blast-cleaned to Sa 2½ (ISO 8501-1:2007) or SSPC-SP6 (blast-clean to SSPC-SP10 for optimum performance). If local areas cannot be blasted, power tool cleaning to St 3 (ISO 8501-1:2007) is allowed. Only after surface preparation can HI-AQU 8495 be applied.
Before applying HI-AQU 8495, ensure the surface to be coated is clean and dry, and apply within the specified recoat interval (refer to the relevant product instructions).
Other surfaces: if this coating is to be applied to other surfaces, consult the Nippon Paint Industrial Coatings Protective Coatings division.
Application is not recommended when the ambient temperature is below 5 °C or above 50 °C, or relative humidity exceeds 75%; steel
The temperature should be at least 3 °C above the dew point of the surrounding air.
| Mixing ratio | Base : curing agent = 4:1 (by mass) |
|---|
The base and curing agent must be mixed thoroughly before use.
| Pot life | 3 h (25 °C) |
|---|
Once mixed, use within the pot life.
| Theoretical spreading rate | 0.23 kg/m² (at 50 µm dry film) |
|---|---|
| Thinner | Deionised water |
Roller/brush/air spray: for touch-up and small-area application. Airless spray: for large-area application. Regardless of the method, the specified dry film thickness must be achieved.
| Air Spray | Nozzle size: 1–2 mm; air pressure: 0.3–0.5 MPa |
|---|---|
| Airless Spray | Nozzle size: 0.017–0.023 in; nozzle pressure: above 150 bar |
| Typical film thickness | 40–80 µm dry film: 80–160 µm wet film. Drying time |
| Substrate Temperature | 15°C | 25°C | 40°C |
| Touch dry time | 45min | 30min | 20min |
| Hard dry time | 18h | 8h | 4h |
| Fully cured | 21d | 14d | 5d |
| Minimum recoat time | 18h | 8h | 4h |
| Maximum recoat time* | - | ||
The data above are for guidance only. Actual recoat and drying times may be shorter or longer depending on film thickness, ventilation, humidity, coating system, and prior hand or mechanical preparation conditions.
The following intermediate coats/topcoats are recommended for use with HI-AQU 8495 Water-borne Epoxy Zinc-rich Primer
Intermediate Coat
Topcoat
Select the coating system according to the specific requirements; refer to the product manual or contact Nippon Paint for professional guidance.
Packaging; curing agent
| Unit weight | Base packaging size | Base weight | Base packaging size | |
| 25 Kg | 20 Kg | 20 L | 5 Kg | 5 L |
Shelf life (from production date): base 6 months (at 25 °C); hardener 6 months (at 25 °C). Store per national regulations. The product should be kept sealed in a dry, cool, well-ventilated warehouse, away from heat and ignition sources. The above is the minimum shelf life; inspect before continued use thereafter.
All information in this product data sheet is based on laboratory tests and practical experience. However, since the product is subject to many unforeseeable and uncontrollable factors in actual use, we guarantee only the quality of the product itself. Read this data sheet carefully and confirm with Nippon Paint that it is the latest version before using the product.
We reserve the right to modify this product data sheet without prior notice.
Data is subject to the manufacturer's latest version; in all cases the manufacturer's latest TDS prevails.
Packaging specifications and batch lead times are subject to actual availability. PleaseContact Uscontact us for project-based calculation.
