Huntsman’s Epocast 1622 FST A/B has been designed for applications in need of high grade flammability resistance as well as low toxicity and low smoke density. This material is a two-component, pumpable epoxy syntactic that is easily extruded through Semco dispensing nozzles. Epocast 1622 FST A/B does not flow after it has been applied and will set quickly when at room temperature. Due to this materials low density, it cures rapidly and supports weight reduction. This product is a good choice for aerospace applications where rapid component assembly is required.
1622 FST A of this Pumpable Epoxy Syntactic is off white in color, and 1622 FST B is Amber. Once mixed together this product is off-white. The specific gravity of 1622 FST A is 0.73, and of 1622 FST B is 0.77. Separately, Epocast 1622 A and B are each a paste, but when mixed together, this materials viscosity is 14 cp at 77°F. The gel time of this Pumpable Epoxy Syntactic is 15 minutes for 55.7g at 77°F. When unopened, the shelf life for 1622 FST A and 1622 FST B is 12 months at 77°F.
The insert pull-out strength for Epocast 1622 FST A/B Epoxy Syntactic is 300 lbs at 73°F, and the insert torque-out strength is 100 lbs at 73°F. The compressive strength for this material is 8500 psi at 73°F (58.6 MPa at 23°C.) At 158°F the compressive strength is 3000 psi (20.7 MPa at 70°C.) The compressive modulus for Epocast 1622 FST A/B Epoxy Syntactic is 350 ksi at 73°F (2.41 GPa at 73°F.) Tensile lap shear, AL/AL, is 1700 psi at 73°F (11.7 psi at 23°C.) For additional information please contact certified Krayden Technical Representative, or see the Huntsman Epocast 1622 FST A/B TDS.
EPOCAST 1622 FST A/B TYPICAL CURED PROPERTIES:
| Insert pull-out strength | 300 lb at 73°F |
| Insert torque-out strength | 100 in-lb at 73°F |
| Compressive strength | 8500 psi at 73°F |
| Compressive strength | 3000 psi at 158°F |
| Compressive modulus | 350 ksi at 73°F |
| Tensile lap shear, AL/AL | 1700 psi at 73°F |
For a proper mix ratio, add 11.5 parts by weight of Epocast 1622 FST B hardener to 100 parts by weight of Epocast 1622 FST A resin. In order to ensure thorough mixing, be sure to mix for several minutes. Recommended cure schedule for Epocast 1622 FST A/B is 3 – 5 days when at room temperature, or gel when at room temperature, plus 3 – 5 hours at 125°F (52°C.) In its original sealed container, Epocast 1622 FST A/B should be stored in a dry place at temperatures between +2°C to +40°C (+35.6°F and 104°F) and should be kept out of direct sunlight.
This Pumpable Epoxy Syntactic is a quick set potting adhesive that meets FST requirements. This material offers a high-strength/density ratio over a variety of temperatures and no SVHC as defined by REACH. Epocast 1622 FST A/B is a well suited solution for aerospace applications that call for rapid component assembly. For more info on application methods or product handling precautions please contact Krayden, and authorized distributor of Huntsman Epocast.
