Technical Data Sheet: 4500-P-201Y

Trade Name



Fluid Resistant, Urethane Compatible Low V.O.C. Chromated Epoxy Primer Yellow


4500-P-201Y primer is designed for use on aircraft exterior and/or detail parts (components). This primer exhibits a high degree of Skydrol and corrosion resistance. Users will find it easy to apply in a wide range of environmental conditions over properly prepared substrates.


  • Excellent Corrosion Resistance
  • Impact Resistant
  • Skydrol Resistant

Surface Preparation

SAE-AMS-QQ-A-250/4 - 2024-T0 Bare SAE-AMS-QQ-A-250/13 - 7075-T6 Clad SAE-AMS-QQ-A-250/5 - 2024-T3 Clad and Bare MIL-C-5541 - Chemical Conversion Treatment

Mixing Instructions

Mix 4:1:1 by volume Base/Cure/Reducer. Mix base thoroughly on a mechanical shaker prior to use. Next slowly add cure to the base and vigorously stir for 3 minutes. Finally, add the reducer and stir until a smooth homogeneous mixture is achieved (2-3 minutes). Mix only sufficient material to use within a 4-hour period. Always add Cure component to Base component - NEVER THE REVERSE. Never mix coating or individual components from one vendor with that of another vendor.

Spray Viscosity

22 - 28 seconds on #2 Zahn Cup (EZ) / (Signature) Note: users should expect a 5 second increase in visocity over the 4 hour potlife.

Line Specification

CMS-CT-201 Class B Grade B


Part NumberDescription

Tempo Aerospace is a AS9100D and ISO9001:2015 certified manufacturer and distributor of high performance polyurethane, epoxy, polysiloxane, lacquer and alkyd coatings.

Our specialty lies in producing made to order batches, ranging from 1 to 300 gallons (4 to 1,100L) in our 25,000 square foot controlled goods certified facility in Toronto, Canada. Custom labelling and packaging in compliance with IATA, IMDG and TDG provides expedited turnaround times for sensitive orders.

Our products are shipped worldwide.

Ship to
60+ Yrs