H42-30 Marine Epoxy Finish
Product Description
H42-30 Marine Epoxy Finish
Product Introduction:
H42-30 is a two-pack, high-performance epoxy finish coating, specially formulated to provide a tough, glossy, and decorative protective layer for marine structures above the waterline. It delivers excellent durability combined with outstanding chemical and abrasion resistance, making it ideal for demanding marine environments where both aesthetics and long-term protection are required. With a low VOC content of less than 400 g/L, it meets stringent environmental standards without compromising on performance. This finish coat exhibits superior adhesion to properly prepared epoxy primer surfaces and offers excellent color retention and gloss stability over extended service periods. Its versatile formulation allows for application in newbuilding projects, as well as routine maintenance and onboard repair work. The product cures to a hard, smooth film that resists impact, chipping, and weathering, ensuring a lasting cosmetic finish that enhances the professional appearance of vessels while providing reliable corrosion protection for above-water steel structures.
This two-pack product is supplied with a mix ratio of 2.3:1 by volume (4:1 by weight). It dries to a glossy finish with a volume solids content of 53% ± 3%. For application, airless spray is recommended using a tip size of 0.38–0.53 mm and an output pressure of ≥15 MPa; air spray is also suitable with a tip size of 1.5–2.0 mm and pressure ≥0.4 MPa. Brush or roller application is limited to small touch-up areas only. Thinning is not recommended for routine use—if absolutely necessary, HX-501 may be added at a maximum of 5% by volume; HX-501 is also used as the equipment cleaner. An induction period of 30 minutes at 10°C, 20 minutes at 25°C, or 10 minutes at 35°C is required before application. For storage, keep the product in a cool, dry, well-ventilated area, protected from sunlight, heat, and open flames, with containers tightly sealed. Shelf life is 12 months minimum at 25°C (subject to re-inspection thereafter). Packaging: Part A is supplied as 22.8 kg / 14 L in a 20 L container; Part B is 5.7 kg / 6 L in a 6 L container. Flash point: >31°C for Part A, Part B, and mixed paint.
Intended Uses:
*As a cosmetic finish coat for all areas above the waterline.
*Suitable for newbuilding, maintenance and repair, or onboard maintenance operations.
*Provides a tough, glossy, and decorative protective layer.
Film Thickness & Theoretical Coverage:
| Parameter | Minimum | Standard | Maximum |
| Dry Film Thickness (DFT) | 30 μm | 40 μm | 80 μm |
| Wet Film Thickness (WFT) | 57 μm | 75 μm | 150 μm |
| Theoretical Coverage | 17.7 m²/L | 13.3 m²/L | 6.6 m²/L |
Drying & Overcoating Data：
| Parameter | 10℃ | 25℃ | 35℃ |
| Touch Dry | 6h | 2h | 1h |
| Hard Dry | 48h | 20h | 16h |
| Pot Life | 6h | 4h | 2h |
| Overcoating - Min | 48h | 20h | 16h |
| Overcoating - Max | 14d | 7d | 5d |
Surface Preparation:
All surfaces must be cleaned with high-pressure fresh water or fresh water wash, followed by solvent cleaning per SSPC-SP1 to remove all oil, grease, soluble contaminants, and other foreign matter. The surface to be coated must be clean, dry, and free from contamination.
For Newbuilding / Major Refurbishment:
H42-30 should be applied over a recommended primer coating system. The primer surface must be clean, dry, and uncontaminated, and the topcoat must be applied within the specified overcoating window (consult the relevant product data sheet). Damaged or broken areas should be prepared to at least St3 standard and primed before applying H42-30.
For Repair / Onboard Maintenance:
H42-30 should be applied over a recommended primer system following the same preparation and overcoating rules as for newbuilding. Alternatively, H42-30 may be applied directly over aged H42-30 coatings, provided the old film is intact and firmly adherent. Loose or flaking paint must be removed back to a sound edge, and the area should be repaired with H42-30 or an appropriate primer before the full topcoat is applied.
Application Limitations：
*Do not apply when ambient relative humidity exceeds 85%.
*The substrate temperature must be at least 3°C above the dew point at all times during application.
*Drying times and overcoating intervals may vary according to actual site conditions.
*Avoid prolonged inhalation of solvent vapors and paint mist. Prevent skin and eye contact. Ensure adequate ventilation and take fire-prevention measures during application.