Vantage Specialty Chemicals BandB PCR-1640 (55-USGL-DRUM)

PCR-1640 Prepaint Corrosion Remover

Overview

PCR-1640 Prepaint Corrosion Remover is a concentrated acidic solution designed to remove corrosion and heavy surface oxidation from aluminium aircraft surfaces. It produces a uniform matte finish and is specifically intended for use prior to conversion coating, painting, anodizing, or welding. The formulation is hydrofluoric acid-free and non-chromated, offering a safer and effective aerospace surface preparation solution.

Key Technical Specs

• Product Type: Acidic aluminium corrosion remover
• Mix Ratio: 1:1 with water
• Finish: Matte aluminium surface
• Flash Point: Non-flammable
• Composition: Hydrofluoric acid-free, non-chromated
• Contact Time: 5-10 minutes

Approvals & Specifications

• Conforms to SAE AMS 1640 Revision C
• Supersedes MIL-C-38334 (Type I, Class I)
• NSN: 6850-00-527-2426 (5 gallon)
• NSN: 6850-00-300-9008 (55 gallon)

Typical Applications

• Removal of corrosion and oxidation from aluminium aircraft surfaces
• Pre-treatment prior to painting and coating systems
• Surface preparation before anodizing or welding
• Aerospace maintenance, repair, and overhaul (MRO)

Compatibility & Safety Notes

• Avoid contact with glass and high-strength steel (mask where required)
• Safe on acrylic plastics (no crazing or staining per ASTM F484)
• Do not allow product to dry on surfaces during application
• Use appropriate PPE and refer to Safety Data Sheet before use
• Dispose of in accordance with local environmental regulations

Packaging & Procurement

• Available in pails and drums
• NSN listed for aerospace procurement
• Shelf life: 24 months (sealed, above 10°C)

Why This Product is Chosen for AOG / MRO

• Reliable corrosion removal without hydrofluoric acid hazards
• Consistent surface finish for coating adhesion
• Clinging formulation suitable for vertical and complex geometries
• Compliant with key aerospace specifications

Practical Suggestions for Your Team (AOG Mindset)

• Always pre-clean heavily contaminated surfaces for best results
• Apply from bottom to top to avoid streaking
• Monitor dwell time carefully (5-10 minutes maximum)
• Ensure thorough rinsing before proceeding to coating stages

Manufacturer / Aviation Spec Codes

• Product Name: PCR-1640 Prepaint Corrosion Remover
• Specification: SAE AMS 1640C
• Type: Aircraft aluminium corrosion remover
• Application: Prepaint surface preparation