Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Technologies
- Product Families
Features & Benefits
- Ready-to-Use Product Features
- Product Features
- Available in multiple colors
- Ability to fill a sandblast profile in one coat
- Formulated for use where high impact resistance is required
- Quick dry time and a 3 day topcoat window
- No induction required
- VOC Compliant
Applications & Uses
- Applications
- Application Area
- Application Method
- Compatible Substrates & Surfaces
- Recommended Uses
EP-521 Low VOC Primer is intended for industrial applications; either new build or maintenance. EP521 Low VOC Primer is suitable for application on steel, aluminum, stainless steel, fiberglass, and other ferrous metals. This primer must be topcoated to achieve the best results.
EP-521 Low VOC Primer is not recommended in thin films as a sealer.
Industries:
- Oilfield & Energy Services
- Well Service vehicles
- Cranes and Construction Equipment
- Trailers
- Waste and Recycling Industry
- Garbage Trucks
- Mix Ratio
5 parts by volume of component A and 1 part by volume of component B. The recommended temperature when mixed is 68-77°F (20-25°C).
- Surface Preparation
Surface must be free of all contaminants such as dust, oil, grease and salt. It is recommended that all steel and other ferrous surfaces be sandblasted a minimum of SSPC-SP6 or mechanically sanded with 80 grit sandpaper.
- Application Method
EP-521 Low VOC Primer can be applied using most spray systems, although electrostatic sprayers are not recommended. Apply 1-2 coats as required to achieve the desired film thickness. Allow sufficient flash time between coats especially with higher film builds applied (20-30minutes).
- Spray Gun Setup
Feed Type Fluid Tip Application Pressures (Heel of Gun) Fluid Delivery Siphon Feed 1.6 - 1.8 mm 40 - 50 psi Gravity Feed 1.6 - 1.8 mm 30 - 40 psi Pressure Feed 1.4 - 1.8 mm 50 - 60 psi 10 - 14 oz/min Air Assist Airless 9 - 11 Thou 1000 - 1800 psi Airless 11 - 13 Thou 1700 - 3000 psi - Spray Viscosity
Note: Spraying viscosity and thinning will depend on ambient conditions, spray equipment used, and the desired surface finish.
If required, recommended spraying viscosity is achieved by reducing with one of the following Endura Low VOC Epoxy reducers. These will maintain VOC compliance of EP-521 Low VOC Primer.
VOC content of the following Reducers: (0g/l, 0 lbs/gal)
[FTH0016] Low VOC Epoxy Reducer - Regular
[FTH0027] Low VOC Epoxy Reducer - Slow
- Film Build
Endura EP-521 Low VOC Epoxy Primer has a recommended film build thickness of:
WFT (Unreduced) 5.5 - 9 mils 140 - 230 microns
DFT 3 - 5 mils 76 - 127 microns
The recommended dry film thickness is above the blast/ sanding profile.
Theoretical coverage at 1.0 mil (25 microns) DFT: 901 ft² per gallon at 100% transfer efficiency
- Dry Times
20°C 30°C 40°C Top Coat 3 Hours 2 Hours 1 - 2 Hours Full Cure 7 - 9 Days 5 - 6 Days 3 - 4 Days Note: Dry Times are subject to ambient conditions (temperature and humidity) and good airflow and film build of primer.
For best results, surface temperature must be 86°F (30°C) or less before top coating. Maximum re-coat window without sanding is 3 days at 68°F (20°C). Recommended Sanding 180 – 220 grit after the topcoat window has been exceeded.
If EpoCat is used, the topcoat window is 12 hours maximum. If the substrate crosses the dew point, there is potential for the primer film to absorb moisture and cause adhesion problems leading to delamination. Booth temperature should be maintained between prime coat and topcoat to avoid this issue.
- Top Coating Infomation
This Product can be top coated with the entire range of Endura topcoat products.
- Clean Up
Clean all equipment immediately after use with Endura High Strength Gun Wash, Endura epoxy reducer or Endura EX-2C thinner.
Properties
- Finish
- Low Gloss
- Typical Properties
- Specifications
| Value | Units | Test Method / Conditions | |
| Volume Solids Mixed (1:1) | 54 - 58 | % | - |
| VOC Mixed (Unreduced) | 238.0 | g/l | EPA Method 24 |
| Value | Units | Test Method / Conditions | |
| Solvent Resistance (100 MEK Rubs) | No Failure | - | ASTM D4752 |
| Impact Resistance (30 in. lbs) | No Failure | - | ASTM D2794 |
| Flexibility (1/4 in. Mandrel Bend) | No Failure | - | ASTM D522 |
| Service Temperature | -40 to 121 | °C | - |
Safety & Health
- Environmental Conditions
For optimum coating performance product, substrate and ambient temperature should be between 68°F-77°F (20°C-25°C). To prevent condensation during application the surface temperature must be 5°F (3°C) or more above the dew point at all times.
Packaging & Availability
- Ordering Information (Sizing)
1 Mixed Quart (3.78 L) Comp A - White #1 FEA0851-035 3.15 L Comp A - Green #15 FEA0852-035 3.15 L Comp A - Blue #20 FEA0853-035 3.15 L Comp A – Black #1 FEA0854-035 3.15 L Comp A – Beige#1 FEA0855-035 3.15 L Comp A – Red #25 FEA0857-035 3.15 L Comp A – Red #26 FEA0859-035 3.15 L Comp B FEB0850-022 0.63 L 1 Mixed Quart (3.78 L) Comp A - White #1 FEA0851-055 15.75 L Comp A - Green #15 FEA0852-055 15.75 L Comp A - Blue #20 FEA0853-055 15.75 L Comp A – Black #1 FEA0854-055 15.75 L Comp A – Beige#1 FEA0855-055 15.75 L Comp A – Red #25 FEA0857-055 15.75 L Comp A – Red #26 FEA0859-055 15.75 L Comp B FEB0850-035 3.15 L
Storage & Handling
- Pot Life (25°C, 50% RH)
- 10 Hours
- Shelf Life
- 3 Years (Component A, 25°C), 2 Years (Component B, 25°C)