Corlar® 13580S™ Non-Chromate Epoxy Sanding Surfacer



A chromate-free, epoxy primer that provides excellent adhesion and corrosion resistance for aerospace applications where a chromate-containing primer is not acceptable. It is designed for direct-topcoat applications and will deliver excellent final appearance due to extremely low texture. This high-solids primer is also designed to provide excellent build, productive dry times and good sanding characteristics. Meets or exceeds performance per MIL-PRF-23377J; Type I, Class N.


  • Chromate-free
  • Excellent build
  • Good sanding characteristics

Product Details

Type Primer-Surfacer`
Technology Epoxy
Substrates Over properly treated aluminum, aluminum alloys, composite, fiberglass and steel substrates.
Recommended for use with Axalta 13206S™ Pre-Treatment, 13550S™ and 13520S™ primers.
VOC 2.1 lb/gal

Available Sizes

Size Case Qty UPC GMC
Gallon 012500620114 1250062011

Mixing Instructions

Components Parts by Volume
13580S™ Non-Chromate Epoxy Sanding Surfacer 4
13180S™ Epoxy Activator 1
13756S™ VOC-Exempt Reducer 0.5
  • Up to 1 oz. 13813S™ per RTS gallon
Viscosity 18-22 seconds in a Zahn #2 cup
Pot Life 8 hours at 70°F

Application Instructions


See technical data sheet for complete instructions.

Gun Setup & Air Pressure

13580S can be applied with conventional, HVLP, and electrostatic spray equipment using pressure or gravity feed fluid delivery.

Dry Time

Air Dry Force Dry
To touch: 30-60 minutes on cool down
To tape or topcoat: 2-6 hours 1 hour
Coverage (Ft2) 735
Dry Film Thickness (mil) 2.0-3.0
Wet Film Thickness (mil) 5.0-7.5


For industrial use only by professional, trained painters. Not for sale to or use by the general public. Before using, read and follow all label and SDS precautions.

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