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
Color
gray resin / amber hardener
The color
Mix Ratio
100R/12H
The amount of a constituent divided by the total amount of all other constituents in a mixture
Pot Life
2 hours
Pot life is the amount of time it takes for the viscosity of a material to double (or quadruple for lower viscosity materials) in room temperature after a material is mixed.
It is closely related to work life but it is not application dependent, less precise and more of a general indication of how fast a system is going to cure.
Specific Gravity
1.62
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume.
For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
Additional 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 |
