PPG 513X377/910X482/020X364 (2-USgl-Kit) [EU]

DeSoto® 513X377 Exterior Epoxy Primer

Overview

DeSoto® 513X377 Exterior Epoxy Primer is a urethane-compatible aerospace epoxy primer formulated to protect aluminum and composite substrates against corrosion. Designed for exterior aircraft applications, it delivers excellent adhesion, Skydrol® resistance, and compatibility with a wide range of aerospace polyurethane topcoats. The primer can be applied using conventional, HVLP, airless, and electrostatic spray equipment while maintaining performance across diverse environmental conditions.

Key Technical Characteristics

• Product Type: Two-component exterior epoxy primer
• Color: Yellow
• Mix Ratio (by Volume):
  • 513X377 Base Component: 4 parts
  • 910X482 Activator: 1 part
  • 020X364 Thinner: 3 parts
• Service Temperature Range: -54°C to +177°C (-65°F to +350°F)
• Recommended Dry Film Thickness: 12.5-22.5 microns (0.5-0.9 mils)
• Pot Life: 8 hours at 21-25°C (70-77°F)
• VOC (Ready-to-Use): 685 g/L
• Dry Film Density: 1.72 g/cm� (14.33 lb/gal)
• Theoretical Coverage: 9 m�/L at 25 microns DFT

Core Performance Benefits

• Excellent corrosion protection for aerospace aluminum and composite structures
• Outstanding adhesion to multiple aerospace substrates
• Excellent resistance to Skydrol® hydraulic fluid exposure
• Compatible with Desothane® HS and numerous aerospace topcoat systems
• Can be applied under a wide range of environmental conditions
• Compatible with electrostatic and conventional spray equipment
• Easily removable during repainting with approved chemical paint strippers
• Wide operational temperature capability for demanding aerospace environments

Typical Applications

• Aircraft exterior aluminum structures
• Composite airframe components
• Commercial aircraft finishing systems
• Military aircraft exterior coatings
• OEM aerospace manufacturing operations
• Aircraft maintenance, repair, and overhaul (MRO) programs
• Corrosion protection systems requiring polyurethane topcoats

Material Engineering & Design Features

DeSoto® 513X377 is engineered as a high-performance exterior epoxy primer that combines corrosion resistance with strong substrate adhesion and hydraulic fluid resistance. The formulation is optimized for compatibility with modern aerospace polyurethane coatings while supporting multiple spray application technologies.

The primer is qualified to numerous aerospace specifications, including:

• BAMS 565-008 Grade A Type II
• BMS 10-79 Type II Class B Grade A
• CMS-CT-201 Class A & B Grade A
• MEP 10-060 Type I & II Class B
• SMS 111204 Type I Class 1 Form 1
• I.C.TO-37.03

It is also compatible with a broad range of aerospace topcoat specifications including AMS 3095, BAC 5312, BMS, DMS, CMS, RMS, and SMS-approved coating systems.

Installation & Handling

• Thoroughly shake the base component before mixing
• Add activator to the base component and mix thoroughly
• Add thinner while maintaining agitation
• Continue agitation for approximately 10 minutes
• Condition materials for 24 hours between 13°C and 35°C (55°F and 95°F) before mixing
• Induction Time Requirements:
  • 1 hour at 13-21°C (55-70°F)
  • 30 minutes at 22-28°C (71-84°F)
  • No induction required above 29°C (85°F)
• Recommended application conditions:
  • Temperature: 15-30°C (59-86°F)
  • Relative Humidity: 20-90%
• Apply one medium coat with approximately 50% overlap
• Suitable for electrostatic, electrostatic air-assisted airless, HVLP, and conventional spray equipment

Environmental & Compliance Notes

• Qualified to multiple aerospace OEM and military specifications
• Store unopened containers between 5°C and 35°C (41°F and 95°F)
• Shelf Life:
  • 12 months for most OEM specifications
  • 24 months under PRC-DeSoto standard requirements
• Review applicable Safety Data Sheet (SDS) before use
• For industrial use only
• Observe proper handling procedures due to solvent content and flammability characteristics

Key Advantages for Aerospace Use

• Excellent corrosion protection for exterior aircraft structures
• Outstanding Skydrol® hydraulic fluid resistance
• Strong adhesion to aluminum and composite substrates
• Compatible with numerous aerospace polyurethane topcoat systems
• Supports modern electrostatic and high-efficiency spray processes
• Flexible application across varying environmental conditions
• Facilitates future maintenance through chemical stripper removability
• Proven aerospace performance for OEM and MRO operations