SPRAY FAIR 328 CONVERTER

What is SPRAY FAIR 328 CONVERTER and why choose it

SPRAY FAIR 328 CONVERTER (Alexseal C3287) is the dedicated converter for the ALEXSEAL Spray Fair 328 epoxy-based, two-component sprayable filler system. Formulated for professional yacht finishing and industrial serial painting, it reacts with the Spray Fair 328 base to create a high-build fairing compound with excellent application, sanding and anti-sagging properties. Once cured, the system provides an ideal surface for re-coating with other ALEXSEAL products.

Main features

• Dedicated converter for Spray Fair 328: Specifically designed to be mixed 1:1 by volume with ALEXSEAL Spray Fair 328 base (P3280).
• Professional-grade epoxy system: Part of an epoxy-based, solvent-borne sprayable fairing compound for high-performance yacht and marine applications.
• Excellent film performance (with base): Enables high film builds with good sanding properties and resistance to sagging on vertical surfaces.
• Controlled mixing through color contrast: Converter is yellow and the base is tan; a uniform tan mixture visually confirms thorough mixing.
• Spray application optimized: Suitable for conventional, HVLP and airless spray equipment with defined nozzle sizes and pressures.
• Above-waterline use: The Spray Fair 328 system is intended for properly primed surfaces above the waterline.
• Professional use only: Classified as a flammable, corrosive, sensitising mixture and must be handled by trained personnel with appropriate protection.

Technical specifications

Product identity

• Commercial name: ALEXSEAL C3287 – Spray Fair 328 Converter 1226 Yellow matt / matte
• Brand: Alexseal
• Intended use (SDS): Industrial serial painting; converter for ALEXSEAL Spray Fair 328 fairing system
• Chemical nature: Mixture of synthetic resins, organic solvents and pigments

Mixing ratio within the system

• With base: 1 part by volume P3280 ALEXSEAL Spray Fair 328 base : 1 part by volume C3287 SPRAY FAIR 328 CONVERTER
• Reducer (R3040 High Build Epoxy Reducer): 10 – 25 % by volume, based on total base + converter
• Examples:
  • 1 : 1 : ¼ = 12.5 % reduction
  • 1 : 1 : ½ = 25 % reduction

Physical and chemical data (converter)

• Physical state: Liquid (20 – 25 °C, 1,013 hPa)
• Colour: According to product name (yellow, matt)
• Odour: Characteristic
• Boiling range: Approx. 120 °C
• Flash point: 23 °C (ISO 13736)
• Upper explosion limit: 10 % (V)
• Lower explosion limit: 1 % (V)
• Auto-ignition temperature: > 400 °C
• pH (10 % in water, 20 °C): 13 – 14
• Kinematic viscosity: > 21 mm²/s
• Flow time: 151 s (DIN 53211, 4 mm cup); > 101 s (ISO 2431, 6 mm cup)
• Water solubility: Insoluble; immiscible with water
• Vapour pressure: Approx. 100 hPa at 50 °C
• Density: Approx. 1.6 g/cm³ (20 °C)
• VOC content (mixture): 16.7 %, 270 g/l (Directive 2010/75/EU)

Classification and hazards (converter)

• Flammable liquids, Category 3: H226 – Flammable liquid and vapour.
• Skin corrosion, Category 1: H314 – Causes severe skin burns and eye damage.
• Serious eye damage, Category 1: H318 – Causes serious eye damage.
• Skin sensitisation, Category 1: H317 – May cause an allergic skin reaction.
• Long-term aquatic hazard, Category 3: H412 – Harmful to aquatic life with long lasting effects.
• Additional labelling: EUH211 – Warning: Hazardous respirable droplets may be formed when sprayed. Do not breathe spray or mist.

System performance data (Spray Fair 328 fairing compound)

• Volume solids (catalyzed, without reduction): 71 %
• Theoretical coverage at 900 µm (36 mils) DFT:
  • 0.6 m²/litre (2.1 m²/gal; 23 sq. ft./gal)
• Typical practical coverage at 900 µm (36 mils) DFT:
  • Conventional air spray: 0.5 m²/litre (2.0 m²/gal; 22 sq. ft./gal)
  • HVLP: 0.6 m²/litre (2.4 m²/gal; 26 sq. ft./gal)
  • Airless: 0.7 m²/litre (2.8 m²/gal; 30 sq. ft./gal)
• Recommended coats: 3 spray coats
• Wet film thickness (per coat): 400 – 500 µm (16 – 20 mils)
• Dry film thickness (3-coat application): 700 – 900 µm (28 – 36 mils) when reduced up to 25 %
• Maximum dry film thickness per coat: 500 µm (20 mils)
• Maximum film build per spray application: 3 coats, 1,500 µm (60 mils) WFT or 900 µm (36 mils) DFT

Pot life and drying (Spray Fair 328 system)

Optimal application environment: 15 °C (60 °F), 40 % RH up to 30 °C (85 °F), 80 % RH. Minimum application temperature must be 3 °C (5.4 °F) above dew point. Minimum drying temperature: 15 °C (60 °F); ideal 25 °C (77 °F).

Maximum time between coats (recoat window): 24 h.

Storage conditions (converter)

• Recommended storage temperature: 5 – 35 °C
• Storage area: Cool, dry, well-ventilated; protect from heat and direct sunlight.
• Container handling: Keep tightly closed, upright; never use pressure to empty the container.
• Compatibility: Keep away from oxidizing agents and strongly acidic or alkaline materials.

Applications and use cases

• Yacht fairing above the waterline: Intended for fairing all appropriately prepared and primed yacht surfaces that remain above the waterline.
• Fairing primed metal substrates: Use after proper surface preparation and priming with an ALEXSEAL Protective Primer 161.
• Fairing GRP substrates: Apply over GRP that has been primed with ALEXSEAL Finish Primer 442 or Super Build 302 and sanded with P60 – P80 grit after overnight dry.
• High-build fairing systems: Suitable for full fairing systems where a heavily abraded substrate is required.
• Thin fairing systems: Supports fairing systems under 3 mm (⅛ – 0.012 inch) on substrates with a less aggressive profile.

Application guidelines (system)

• Ensure substrates are clean, dry and free from dust, grease, oil and contamination.
• Substrate must be ground and/or blasted with P36–P60 grit before priming.
• Use suitable ALEXSEAL primers according to substrate type and sand with P60–P80 grit after overnight drying before applying Spray Fair 328.
• Mix base and SPRAY FAIR 328 CONVERTER thoroughly (mechanically or manually) until a homogeneous tan colour is achieved; avoid air bubbles.
• Apply by spray in 3 coats, respecting maximum film thickness and recoat windows to avoid solvent entrapment.
• Block sand with P80–P120 grit; sanding with 120 grit or finer helps prevent sand-scratch print-through.
• Seal the porous fairing with ALEXSEAL Super Build 302 (or High Build 357 as specified in some technical versions) before final primer or topcoat.

FAQ

1. What is SPRAY FAIR 328 CONVERTER used for?

SPRAY FAIR 328 CONVERTER (C3287) is the converter component of the ALEXSEAL Spray Fair 328 epoxy-based, two-component sprayable fairing compound, used primarily on yachts and other appropriately primed surfaces above the waterline.

2. What is the correct mixing ratio with the base?

Mix 1 part by volume of P3280 ALEXSEAL Spray Fair 328 base with 1 part by volume of C3287 SPRAY FAIR 328 CONVERTER. Then add 10–25 % by volume of R3040 ALEXSEAL High Build Epoxy Reducer, based on the combined base and converter.

3. How long is the pot life once the system is mixed?

At 15–30 °C, the pot life is approximately 8 hours.

4. Can the Spray Fair 328 system be used below the waterline?

No. According to the technical data, ALEXSEAL Spray Fair 328 is intended for surfaces above the waterline only.

5. What spray equipment settings are recommended?

For conventional and HVLP pressure pot systems, use a 2.2 – 2.8 mm (0.08 – 0.110 inch) fluid nozzle, 3.0 – 5.0 bar (44 – 73 PSI) atomizing pressure and 1 – 1.5 bar (15 – 22 PSI) pot pressure. For airless equipment, use a 0.50 – 0.60 mm (0.020 – 0.024) tip at 3 – 5 bar (44 – 70 PSI) inlet pressure.

6. How many coats should be applied and what thickness can be achieved?

Apply 3 spray coats, each at 400 – 500 µm (16 – 20 mils) WFT. This yields 700 – 900 µm (28 – 36 mils) DFT for the 3-coat system, using up to 25 % reduction. Do not exceed 500 µm (20 mils) DFT per coat or 3 coats per application without overnight cure and sanding.

7. How should the surface be finished before priming or topcoating?

After full cure, block sand Spray Fair 328 with P80–P120 grit and seal with ALEXSEAL Super Build 302 (or High Build 357 where specified) before applying a final primer or topcoat. Sanding with 120 grit or finer helps avoid sand-scratch marks in the final finish.

8. Is SPRAY FAIR 328 CONVERTER hazardous?

Yes. It is classified as a flammable liquid (Category 3), causes severe skin burns and serious eye damage, may cause an allergic skin reaction and is harmful to aquatic life with long lasting effects. Appropriate personal protective equipment and handling precautions are mandatory.

9. What are the recommended storage conditions?

Store between 5 and 35 °C in tightly closed, upright containers, in a cool, dry and well-ventilated area, away from heat, direct sunlight, oxidizing agents and strongly acidic or alkaline materials.

10. Is any special ventilation required during use?

Yes. Adequate local exhaust and general ventilation are required to keep aerosol and solvent vapour concentrations below occupational exposure limits. If this is not possible, appropriate respiratory protection must be worn.

Section 14 – Transport information

• UN number / ID number: UN 1263
• UN proper shipping name: PAINT RELATED MATERIAL
• Transport hazard class: Class 3 (flammable liquids)
• Packing group: III
• ADR:
  • Classification code: F1
  • Hazard identification number: 30
  • Labels: 3
  • Tunnel restriction code: (D/E)
  • Environmentally hazardous: no
  • Note: Receptacles < 450 litres are not subject to ADR 4.1, 5.2 and 6.1 (ADR 2.2.3.1.5).
• IMDG:
  • Packing group: III
  • Labels: 3
  • EmS code: F-E, S-E
  • Marine pollutant: no
  • Note: Receptacles < 450 litres are not subject to IMDG chapters 4.1, 5.2 and 6.1 (IMDG 2.3.2.5).
• IATA (cargo):
  • Packing instruction (cargo aircraft): 366
  • Packing group: III
  • Labels: Flammable Liquids
• IATA (passenger):
  • Packing instruction (passenger aircraft): 355
  • Packing instruction (LQ): Y344
  • Packing group: III
  • Labels: Flammable Liquids
• Special precautions for user: When transported within the user’s premises, always move in closed, upright and secure containers. Ensure personnel handling the product know the procedures to follow in case of incident or spillage.
• Maritime bulk transport: Not applicable for product as supplied.

Section 8 – Personal protective measures

Exposure control

• Provide adequate local exhaust and general ventilation to keep aerosol and solvent vapour levels below occupational exposure limits.
• If ventilation is insufficient, suitable respiratory protection must be used.

Recommended personal protective equipment (PPE)

• Eye and face protection: Wear safety goggles to protect against solvent splashes.
• Hand protection:
  • Use chemical-resistant protective gloves compliant with EN 374.
  • Recommended materials for short-term contact (splash protection): nitrile rubber or neoprene.
  • Minimum material thickness: > 0.4 mm.
  • Breakthrough time: > 480 minutes.
  • Check gloves for suitability in the specific workplace (mechanical resistance, product compatibility, antistatic properties) and replace gloves immediately if damaged or worn.
• Skin and body protection: Wear appropriate protective clothing, adapted to any risk of explosive atmospheres where applicable.
• Respiratory protection:
  • If solvent concentrations exceed air limit values, use an approved breathing apparatus.
  • Use a half-mask with suitable cartridge or an air-fed respirator.
  • During spraying inside spray booths where ventilation may be insufficient, operators should wear compressed air-fed respirators until solvent vapour and particulate levels fall below exposure limits.
  • For dry grinding, torch cutting or welding, which can generate hazardous dust or vapours, use wet methods where possible and install exhaust hoods or wear appropriate respiratory protection.
• General protective measures:
  • Do not eat, drink or smoke while working with the product.
  • Avoid contact with skin, eyes and clothing.
  • Avoid inhaling dust from sanding, particulates and spray mist.
  • Use preventive skin protection (skin protection cream) and wash contaminated skin immediately.

*Contenido generado por IA