SIKA EC-433
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- High-temperature tooling capability
- Aluminum-filled epoxy formulation
- Flexible processing options
Product Description
EC-433 is an aluminum-filled epoxy casting system developed for high-temperature tooling applications, including prototype injection molding, vacuum forming, compression molding, RIM molds, foam molds, and other cast tooling applications. The system is available with multiple hardener options to accommodate different tool sizes and working-time requirements. EC-433 cures at room temperature with a required post cure for elevated-temperature service and accepts higher aluminum loadings to support dimensional stability. Properly processed tools can operate continuously at temperatures up to 300°F (160°C) and intermittently up to 350°F (177°C).
Key features
- High-temperature tooling capability: Supports continuous service temperatures up to 300°F (160°C) and intermittent exposure up to 350°F (177°C).
- Aluminum-filled epoxy formulation: Accepts higher aluminum loading while providing improved dimensional stability for cast tooling applications.
- Flexible processing options: Available with three hardener options offering different working times to accommodate varying mold sizes and manufacturing requirements.
Applications / Suitable for
- Vacuum form molds
- Compression molds
- Prototype injection molding tools
- RIM molds
- Foam molds
- Other high-temperature cast tooling applications
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
As-supplied / before-processing properties
Representative resin handling and storage properties for the as-supplied material.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Pasty | - | Resin form |
| Color | Grey | - | Resin appearance |
| Density | 1.85 | g/cm³ | At 20°C (68°F) |
| Shelf Life | 12 | months | Unopened resin, 8°C to 25°C storage |
After-processing / final-state properties
Service and cure-related properties for properly cured EC-433 tooling systems.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Continuous Service Temperature | 300 | °F | Properly cured tooling |
| Continuous Service Temperature | 160 | °C | Properly cured tooling |
| Intermittent Temperature Resistance | 350 | °F | Intermittent exposure |
| Intermittent Temperature Resistance | 177 | °C | Intermittent exposure |
| Minimum Preliminary Cure Hold | 3 | hours | At 150°F (66°C) after 24-hour room temperature cure |
