EP678
Trelleborg EP678 is a medium temperature, low density syntactic epoxy tooling board designed for the manufacture of accurate and stable master models and molds.
Excellent dimensional stability
Maintains shape at elevated temperatures
Low coefficient of thermal expansion
Consistent, predictable performance
Direct from part manufacturing
Suitable for use up to 135 °C
Inert surface
Chemically compatible with tooling prepregs
Key Applications
EP678 offers many benefits and used for the following:
Master models
Lay-up tools for low and medium temperature curing epoxy prepreg
Product sizes
EP678 is available in a standard board size of 24” x 60” at the following thicknesses: 2", 3", 4" and 6".
Storage
The board should be stored in a dry warehouse.
Health & Safety
Eye protection and a face mask should be worn when working with Trelleborg EP678. Please refer to the Trelleborg MSDS.
Gallery
Tooling board
Demo of our machining performance of our expoxy tooling block. Using a CNC 5 axis machine.
Tooling Board
Finished machined mold.
EP678 Typical Properties
| EP678 | ||
|---|---|---|
|
Color |
Blue |
|
| Density | 708 kg/m³ | |
| Shore hardness | 68 D | |
| Uniaxial compressive strength | 52 MPa | BS EN ISO 604 |
| HDT | 135 °C |
BS 2782 |
| Glass transition temperature |
125 °C |
BS EN ISO 11359-2 |
| Coefficient of thermal expansion |
37 x 10⁶ / °C | BS EN ISO 11359-2 |
| Flexural strength | 34.3 MPa | BS EN ISO |
| Flexural modulus | 2,483 MPa | BS EN ISO 178 |
product sheet
EP678
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