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Key technical facts
- Coverage
- For an application thickness of 1 mm, consumption is 1 L/m² (approximately 0.720 kg/m²).
- Mixing Ratio (by weight) – (by volume)
- A/B (1.5/1) – A/B (1/1)
- Pot Life (min., 23°C, 100 ml)
- ~60
- Dry to Touch (Hours)
- ~6
- Full Cure (Weeks)
- 1
- Mixing Density (g/cm³, 20°C)
- 0.72 ± 0.05
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Description
Demco® EPOX 583 is a two-component, solvent-free, epoxy-based, low-density filler and repair material.
Advantages
- It is easy to apply.
- It does not run or sag in vertical applications.
- It has high mechanical and impact resistance.
- It has low density.
- It is easy to sand.
- It is waterproof.
Application Areas
It is used as a repair and filling putty on wood, steel and composite surfaces, in both underwater and above-water applications.
Technical Properties
| Number of Components | 2 |
| Mixing Ratio (by weight) – (by volume) | A/B (1.5/1) – A/B (1/1) |
| Mixing Density (g/cm³, 20°C) (TS EN ISO 2811-1) | 0.72 ± 0.05 |
| Pot Life (min., 23°C, 100 ml) (EN ISO 9514) | ~60 |
| Solid Content Ratio (EN ISO 3251) | 100% |
| Dry to Touch (Hours) | ~6 |
| Sandability (Hours, at +23°C) | ~24 |
| Full Cure (Weeks) | 1 |
Mechanical Properties
| Adhesion Strength, Pull-off (N/mm²) (TS EN 1542) (20 mm test head, on steel) | >3.0 |
Surface Preparation and Application
Surface quality: All surfaces must be sound and dry and have sufficient strength. They must be free from dust, rust, oil, salt and similar contaminants.
Surface preparation:
- Sandblasted steel surfaces: apply the solvent-based epoxy primer Demco® EPOX 132 PR/S.
- Steel surfaces that cannot be sandblasted but have been mechanically cleaned: apply Demco® EPOX 148 STEEL (surface-tolerant primer).
- Wooden surfaces: apply the solvent-free, epoxy-based primer Demco® EPOX 105 PR.
- Composite surfaces: clean and dry the surface, then roughen it by sanding.
Mixing:
- Demco® EPOX 583 is supplied in ready-to-use kits proportioned to the mixing ratio.
- Before mixing, the temperature of the material should be between 15°C and 25°C.
- Pour the entire component B into component A and mix for at least 3 minutes with a low-speed mixer and a suitable mixing paddle.
- Components A and B have different colours. Mix thoroughly until a uniform colour is obtained; no unmixed material should remain on the sides or bottom of the container.
- Mix at low speed to avoid air bubbles forming in the mixture. When mixing by hand, take care to mix equal quantities of the components.
Application:
- After priming, apply Demco® EPOX 583 to the surface with a trowel.
- The surface can be sanded after 24 hours of curing.
Application Conditions
- The surface temperature during application must be between 15°C and 30°C.
- Demco® EPOX 583 is supplied in ready-to-use kits. During work, take care to prepare equal quantities in accordance with the mixing ratio.
- Do not add solvents or similar thinners to the mixture.
- Prepare only as much material as can be used within the working time, and continue working until it has been used up completely.
- After application, protect the surface from moisture, condensation and water for at least 24 hours.
Coverage
For an application thickness of 1 mm, consumption is 1 L/m² (approximately 0.720 kg/m²).
Storage and Shelf Life
Store in unopened original packaging in a dry, cool, enclosed area at temperatures between +15°C and +35°C, protected from direct sunlight and from freezing. During long-term storage, pallets should not be stacked on top of each other. Suitable for use within 12 months from the production date.
Packaging
Total: 5 L (A: 2.5 L / B: 2.5 L)