What is Intercryl 525 and why choose it
Intercryl 525 from International is a VOC compliant, single component, water based anti-corrosive primer and finish based on weather resistant acrylic copolymer technology. It is designed specifically for structural steel exposed to light and moderate industrial environments, such as bridges, commercial buildings, infrastructure and manufacturing plants. With excellent colour and gloss retention and an eggshell finish, it combines corrosion protection with durable appearance in a single product.
Main features
- Water based acrylic technology: single component, easy to mix and apply, and VOC compliant.
- Primer/finish in one: functions both as an anti-corrosive primer and as a finishing coat for structural steel.
- Designed for light to moderate corrosivity: suitable for a wide range of general industrial environments.
- Excellent colour and gloss retention: maintains its eggshell appearance in outdoor exposure.
- Wide colour range: available through the Chromascan tinting system.
- Flexible application methods: can be applied by airless spray, air spray, brush or roller.
- Good film build: typical dry film thickness of 50–100 microns in one coat when airless sprayed.
- Low VOC: 14 g/kg in accordance with the EU Solvent Emissions Directive (Council Directive 2010/75/EU).
- Temperature resistance: polymer system stable at continuous temperatures up to 150°C and intermittent up to 200°C.
Technical specifications
- Product type: water based anti-corrosive acrylic primer/finish.
- Technology: weather resistant acrylic copolymer.
- Colour: wide range via the Chromascan system.
- Gloss level: eggshell.
- Volume solids: 47% ± 2%.
- Typical dry film thickness (DFT): 50–100 microns (2–4 mils).
- Typical wet film thickness (WFT): 106–213 microns (4.2–8.5 mils).
- Theoretical coverage: 6.30 m²/litre at 75 microns DFT and stated volume solids (251 sq.ft/US gallon at 3 mils DFT).
- Practical coverage: dependent on site conditions; allow appropriate loss factors.
- Method of application: airless spray, air spray, brush, roller.
- Mixing: single component; thoroughly mix with a power agitator before application.
- Thinner/cleaner: clean water or International GTA991 (do not thin more than allowed by local environmental legislation).
- Flash point (typical): greater than 101°C (>214°F).
- Product weight: 1.31 kg/l (10.9 lb/gal).
- VOC: 14 g/kg (EU Solvent Emissions Directive, Council Directive 2010/75/EU).
Drying and overcoating times
Drying times are based on 50% relative humidity and adequate ventilation. Actual times will depend on ambient conditions.
- At 10°C (50°F): touch dry 2 hours; hard dry 6 hours; minimum overcoating interval with recommended topcoats 16 hours; maximum overcoating interval extended.
- At 15°C (59°F): touch dry 1 hour; hard dry 3 hours; minimum overcoating interval 12 hours; maximum overcoating interval extended.
- At 25°C (77°F): touch dry 30 minutes; hard dry 2 hours; minimum overcoating interval 8 hours; maximum overcoating interval extended.
- At 40°C (104°F): touch dry 15 minutes; hard dry 1 hour; minimum overcoating interval 4 hours; maximum overcoating interval extended.
Application conditions and limitations
- Protect Intercryl 525 from freezing during storage.
- Minimum steel temperature for application: above 10°C (50°F) and at least 3°C (5°F) above dew point.
- Relative humidity should be below 70%; higher humidity will significantly extend drying and overcoating times.
- Good airflow is essential around the object being painted (minimum air speed 0.1 m/sec).
- Application below the minimum film forming temperature or in poorly ventilated areas can cause poor film coalescence and a powdery or cracked coating, requiring removal and re-application.
- For brush and roller application, two coats may be required to obtain uniform coverage.
- Intercryl 525 must be fully cured before exposure to ponding water to avoid adhesion loss.
- Not intended for aggressive, highly corrosive environments or for heavily pitted or contaminated steel.
Surface preparation
- All surfaces must be clean, dry and free from contamination.
- Assess and treat surfaces in accordance with ISO 8504:2019.
- Remove oil and grease to SSPC-SP1 solvent cleaning standard.
- Abrasive blast cleaning: blast to Sa2½ (ISO 8501-1:2007) or SSPC-SP6. If oxidation occurs between blasting and coating, reblast to the specified standard.
- Repair surface defects revealed by blasting by grinding, filling or other appropriate methods.
- On primed surfaces, apply Intercryl 525 only over approved anti-corrosive primers within the specified overcoating intervals. Areas of damage should be prepared to Sa2½ or SSPC-SP6 or SSPC-SP11 and patch primed before overcoating.
Application equipment and cleaning
- Airless spray: recommended; tip range 0.38–0.53 mm (15–21 thou); total output fluid pressure at tip not less than 175 kg/cm² (2489 psi).
- Air spray (pressure pot): suitable; typical equipment DeVilbiss MBC or JGA gun with 704 or 765 air cap and E fluid tip.
- Brush: suitable; typically achieves 50 microns (2.0 mils) DFT.
- Roller: suitable; typically achieves 50 microns (2.0 mils) DFT.
- Work stoppages: thoroughly flush application equipment with International GTA991. Store unused material in tightly closed containers; partially filled containers may develop surface skinning or viscosity increase and should be filtered prior to reuse.
- Clean up: clean equipment immediately after use with clean water followed by International GTA991. Periodically flush spray equipment during the working day according to amount sprayed, temperature and any delays.
- Dispose of surplus material and empty containers according to regional regulations and legislation.
System compatibility
Intercryl 525 is primarily designed as the primer/finish within a water based acrylic paint system, but may also be used as a semi gloss finish over a variety of water based and solvent based primers.
- Typical water based primers: InterH2O 280, InterH2O 401, InterH2O 499.
- Typical solvent based primers: Intergard 242, Intergard 251, Intergard 269, Interplate 11, Interplate 240, Interplate 398, Interzinc 12, Interzinc 22, Interzinc 42, Interzinc 52, Interzinc 315.
- Typical water based topcoats: Intercryl 530, Intercryl 700.
Applications and use cases
- Structural steel: protection and finishing of steel structures in light to moderate industrial environments.
- Bridges: anti-corrosive primer/finish system for bridge steelwork where a water based solution is required.
- Commercial buildings: structural frames and exposed steel elements that require durable colour and gloss retention.
- Infrastructure: suitable for infrastructure components subject to general industrial exposure.
- Manufacturing plants: steelwork inside or around manufacturing facilities where VOC compliant, water based products are preferred.
- Touch-up and maintenance: brush or roller application for small areas or repair work, with additional coats as needed to reach specified film thickness.
FAQ
1. Is Intercryl 525 a primer or a finish?
Intercryl 525 is designed as a combined primer and finish for structural steel and can also serve as a semi gloss finish over compatible primers.
2. In what environments can Intercryl 525 be used?
It is intended for general industrial environments of light to moderate corrosivity, including bridges, commercial buildings, infrastructure and manufacturing plants. It is not intended for aggressive, highly corrosive environments or heavily pitted steel.
3. What application methods are suitable?
Intercryl 525 can be applied by airless spray, air spray (pressure pot), brush or roller. Maximum film build in one coat is best achieved by airless spray.
4. What is the recommended dry film thickness?
The typical dry film thickness is 50–100 microns (2–4 mils), with corresponding wet film thickness of 106–213 microns.
5. How long does it take to dry?
At 25°C (77°F) and 50% relative humidity, Intercryl 525 is typically touch dry in 30 minutes and hard dry in 2 hours, with a minimum overcoating interval of 8 hours with recommended topcoats. Drying times increase at lower temperatures and higher humidity.
6. Can Intercryl 525 be exposed to high temperatures?
The coating is slightly thermoplastic above 50°C (120°F), but the polymer system is stable at continuous temperatures up to 150°C (300°F) and intermittent temperatures up to 200°C (390°F).
7. Is Intercryl 525 suitable for immersion or ponding water?
Intercryl 525 must be fully cured before exposure to ponding water; otherwise adhesion loss can occur.
8. What surface preparation is required?
Steel should be abrasive blast cleaned to Sa2½ (ISO 8501-1:2007) or SSPC-SP6, with all surfaces clean, dry and free from contamination. For primed substrates, surfaces must be clean and dry and any damage repaired and patch primed prior to application.
9. Can it be applied in high humidity conditions?
Relative humidity should be below 70%. Higher humidity will significantly extend drying and overcoating times and may affect film formation.
10. Who should apply this product?
The product is intended for use only by professional applicators in industrial situations, following the Safety Data Sheet and relevant national Health, Safety and Environmental standards.
Transport and shipping information (Section 14)
- Pack size: 20 litre unit.
- Pack volume: 20 litre.
- Shipping weight (typical) for 20 litre unit: 28.1 kg.
- Classification: non hazardous (shipping weight table).
Individual protection measures (Section 8)
- The product is intended for use only by professional applicators in industrial situations, following guidance on the container, this data sheet and the Safety Data Sheet.
- All work involving the application and use of Intercryl 525 should comply with relevant national Health, Safety and Environmental standards and regulations.
- When welding or flame cutting metal coated with this product, dust and fumes will be emitted; appropriate personal protective equipment and adequate local exhaust ventilation are required.
- Ensure good ventilation during application and drying, with adequate airflow around the coated object.
- Store in dry, shaded conditions away from sources of heat and ignition and protect from freezing during storage.
*Contenido generado por IA
