AXSON EC-433-2
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others
Main features
- Up to 300 deg F Continuous Tooling
- Up to 350 deg F Intermittent Exposure
- Aluminum-Filled Tooling Formulation
Product Description
AXSON EC-433-2 is the fast-hardener configuration of the EC-433 aluminum-filled epoxy casting system developed for heat-resistant cast tooling. The room-temperature-hardening system provides a 120-minute work life at 77°F (25°C), accepts additional bulk aluminum filler, and requires a controlled heat cure for service above 150°F (66°C). Properly cured 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 performance: Supports continuous tool temperatures up to 300°F (160°C) and intermittent temperatures up to 350°F (177°C) after the required cure.
- Fast hardener configuration: Provides a 120-minute work life at 77°F (25°C) for comparatively faster processing within the EC-433 system.
- Dimensional stability: The aluminum-filled epoxy formulation exhibits low linear shrinkage and can accept additional N-20 aluminum grain.
- Room-temperature B-stage cure: Develops initial hardness at room temperature before the required controlled heat-cure schedule.
Applications / Suitable for
- Vacuum-form molds
- Compression molds
- Prototype injection molds
- RIM molds
- Foam molds and other high-temperature cast-tooling applications
TDS, SDS & Technical Documents
Technical Specifications
General Properties
ColorColor
gray resin / amber hardenerMix RatioMix Ratio
100R/12HPot LifePot Life
2 hoursSpecific GravitySpecific Gravity
1.62Additional Information
Technical properties
As-supplied / before-processing properties
Typical handling and processing properties for EC-433-2 at 77°F (25°C), unless otherwise stated.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Product type | Aluminum-filled epoxy casting system | — | EC-433 resin with EC-433-2 fast hardener |
| Color | Gray resin / amber hardener | — | As supplied |
| Mix ratio, resin:hardener | 100R:12H | parts by weight | EC-433-2 fast configuration |
| Specific gravity | 1.62 | g/cc | Mixed system at 77°F (25°C) |
| Mixed density | 0.058 | lb/cu. in. | At 77°F (25°C) |
| Mixed viscosity | 9,000 | cps | At 77°F (25°C) |
| Work life | 120 | minutes | At 77°F (25°C) |
| Demold time | 24 | hours | See recommended cure schedule |
| Maximum casting thickness | <1 | in. | Without aluminum-filler additive |
| Suggested casting mass | <2 | cu. ft. | With N-20 aluminum bulk-filler additive |
| Bulk-filler mix ratio | 100:155 | parts by weight | Catalyzed EC-433:N-20 aluminum grain |
| Preliminary cure | 24 hours at 77°F (25°C) + 3 hours at 150°F (66°C) | — | Minimum cure schedule; cool before demolding |
| Recommended post cure | 2 hours at 200°F (93°C) + 2 hours at 250°F (121°C) + 2 hours at 300°F (149°C) | — | When additional post cure is required |
| Shelf life — resin | 12 | months | Original unopened container at 47–77°F (8–25°C) |
| Shelf life — hardener | 24 | months | Original unopened container at 60–77°F (15–25°C) |
Technical properties
After-processing / final-state properties
Typical cured properties for EC-433-2 measured on a 5 × ½ × ½-inch cast bar, unless otherwise stated.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Continuous operating temperature | 300 (160) | °F (°C) | Properly post-cured tool |
| Intermittent operating temperature | 350 (177) | °F (°C) | Properly post-cured tool |
| Tensile strength | 5,750 (40) | psi (MPa) | ASTM D638-91 |
| Tensile modulus | 941,200 (6,489) | psi (MPa) | ASTM D638-91 |
| Flexural strength | 10,620 (73) | psi (MPa) | ASTM D790-92 |
| Flexural modulus | 700,900 (4,833) | psi (MPa) | ASTM D790-92 |
| Compressive strength | 16,300 (112) | psi (MPa) | ASTM D695-91 |
| Notched Izod impact strength | 11.8 | in-lbf/in. | ASTM D256-93A |
| Coefficient of thermal expansion | 28 (51) | ppm/°F (ppm/°C) | TMA |
| Glass transition temperature, Tg | 288 (142) | °F (°C) | DMA |
| Hardness | 90 | Shore D | Typical cured property |
| Linear shrinkage | 0.005 | in./in. | 200 cm³ mold, EC-433-2 |
| Linear shrinkage with N-20 aluminum grain | 0.002 | in./in. | 4,650 cm³ mold |
