Epocast 50-A1/946: High-Strength Flame-Retardant Epoxy Laminating System
Epocast 50-A1 resin/Hardener 946 epoxy laminating system is an unfilled, solvent-free, easy-to-handle material for the manufacture or repair of composite structures as well as for filament winding.
Huntsman Epocast 50-A1/946 is a high-performance, two-part epoxy laminating system specifically engineered for the manufacture and repair of composite structures. This unfilled, solvent-free system is widely recognized in the aerospace industry for its superior strength and self-extinguishing properties. The 946 Hardener provides a short work life, making it ideal for efficient, high-speed production cycles, filament winding, and critical structural repairs where a fast set-time is required.
| Category | Adhesive | Brand | Huntsman |
| Part No. | EPOCAST 50-A1/946 | OEM Part No. | Not Avaliable |
| Alt Part No. | Not Avaliable | Country of Origin | Not Available |
| Pro Category | Not Available | Is Return | Yes |
| Condition | Self Life | ||
| Pack Size | |||
Features:
- Epocast 50-A1 resin/Hardener 946 epoxy laminating system is self extinguishing and is qualified to BMS 8-201.
- This product is also available in a shorter work life version - Epocast 50-A1 resin/Hardener9815 epoxy laminating system
- High Strength
- Self Extinguishing
- Short Work Life
Application
- Composite Repair: Structural bonding and laminating of aircraft composite panels (wings, fuselage, and tail sections).
- Filament Winding: Manufacture of high-strength composite tanks, tubes, and pressure vessels.
- Manufacturing: Creation of flame-retardant composite tools and interior components.
- MRO Operations: Fast-turnaround repairs of fiberglass and carbon fiber structures.
EPOCAST 50-A1/946
- Chemical Type: 2-Part Epoxy.
- Color: Amber / Straw.
- Mix Ratio: 100:15 (Resin to Hardener by weight).
- Mixed Viscosity: 2,400 cP at 25°C.
- Gel Time: 20 minutes (100g mass at 25°C).
- Density: 1.18 g/cc.
- Flammability: Self-extinguishing (Meets FAR 25.853A requirements).
- Compressive Strength: >45,000 psi (on 12-ply glass laminate).
- Pack Size: Available in Quart Kits (includes Resin and Hardener).
- Shipping Class: Regulated as Environmentally Hazardous/Corrosive (Class 8/9).
- Brand: Huntsman / Epocast.
- Boeing Specification: Qualified to BMS 8-201, Type IV, Rev. F.
- Mixing: Add 15 parts Hardener 946 to 100 parts Resin 50-A1 by weight. Mix thoroughly for several minutes until uniform.
- Cure Schedule:
- Room Temp Cure: 5 days at 25°C (77°F).
- Accelerated Cure: 2 hours at 77°C–93°C (170°F–200°F).
- Handling: Machining and handling can typically be performed 8–16 hours after room temperature gel.
- Shelf Life: 12 months from date of shipping when stored between 16°C and 38°C.