COOLTHERM EP-6007
Harmonization Code : 3910.00.00.90 | Silicones in Primary Forms; Others

Main features
- 45-Minute Working Window
- 0.62 W/(m K) Thermal Interface
- 19.7 kV/mm Dielectric Strength
Product Description
CoolTherm® EP-6007 BLK Epoxy Resin is a black, ceramic-filled epoxy resin formulated for use with CoolTherm® EP-6010 Hardener, Thermoset™ Hardener No. 67, or CoolTherm® EP-6252 Hardener. The resulting two-component systems are suitable for thermally conductive potting and casting and for thin-bondline attachment of semiconductors to heat sinks. Depending on the selected hardener, the cured system provides a typical thermal conductivity of 0.50–0.62 W/m·K, dielectric strength of 18.8–19.7 kV/mm, and operating-temperature capability from -55 to 130 °C.
Key features
- Thermally conductive epoxy system: Provides a typical cured thermal conductivity of 0.50–0.62 W/m·K, depending on the selected hardener.
- Electrical insulation: Delivers typical dielectric strength of 18.8–19.7 kV/mm and volume resistivity up to 2 × 1016 ohm-cm.
- Configurable processing: Supported hardener options provide working lives from 45 minutes to 8 hours at 25 °C and multiple room-temperature or heat-cure schedules.
Applications / Suitable for
- Thermally conductive potting and casting
- Thin-bondline attachment of semiconductors to heat sinks
- Applications requiring electrical insulation and non-burning properties
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Physical Properties
Thermal Properties
Additional Information
As-supplied / before-processing properties
Typical properties of CoolTherm EP-6007 BLK resin and its mixed systems before cure. Mix ratio, working life, and cure schedule depend on the selected hardener. Values are not intended for specification purposes.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | Black liquid | — | CoolTherm EP-6007 BLK resin as supplied |
| Viscosity | 15,000 | cP | Resin at 25 °C; test method not stated |
| Specific gravity | 1.69 | — | Resin; test temperature and method not stated |
| Mix ratio by weight | 100:5.5 / 100:9 / 100:10 | Resin:hardener | EP-6010 Hardener / Thermoset Hardener No. 67 / EP-6252 Hardener |
| Working life | 2 / 8 / 45 | hours / hours / minutes | At 25 °C; EP-6010 Hardener / Thermoset Hardener No. 67 / EP-6252 Hardener |
| Cure time — EP-6010 Hardener | 12–16 | hours | At 25 °C |
| Cure time — Thermoset Hardener No. 67 | 16 / 5 / 3 | hours | At 65 / 100 / 130 °C; suitable for pourings up to 227 g in a concentrated mass |
| Cure time — EP-6252 Hardener | 24 / 1 | hours | At 25 / 65 °C |
| Shelf life | 1 | year | Stored at 25 °C in the original, unopened container |
After-processing / final-state properties
Typical cured properties of CoolTherm EP-6007 BLK systems with EP-6010 Hardener, Thermoset Hardener No. 67, or EP-6252 Hardener. Values are listed in that order and are not intended for specification purposes.
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Thermal conductivity | 0.60 / 0.50 / 0.62 | W/m·K | Hot Disc Transient Method, ISO 22007-2 |
| Coefficient of thermal expansion, α1 | 47 / 42 / 36 | ppm/°C | Temperature region and test method not stated |
| Coefficient of thermal expansion, α2 | 122 / 140 / 161 | ppm/°C | Temperature region and test method not stated |
| Glass transition temperature | 54 / 94 / 45 | °C | TMA |
| Hardness | 85 / 85 / 83 | Shore D | EP-6010 Hardener / Thermoset Hardener No. 67 / EP-6252 Hardener |
| Tensile strength at 25 °C | 57 (8,400) / 67 (9,800) / 22 (3,200) | MPa (psi) | Test method not stated |
| Elongation at yield | 0.7 / 1.2 / 1.4 | % | Test method not stated |
| Moisture absorption | 0.4 / 0.4 / 0.8 | % | 10 days at 25 °C; exposure medium and test method not stated |
| Linear shrinkage | 0.002 / 0.003 / 0.009 | in/in | Test method and cure condition not stated |
| Volume resistivity at 25 °C | 2 × 1016 / 2 × 1016 / 1 × 1014 | ohm-cm | Test method not stated |
| Dielectric strength | 19.3 (490) / 19.7 (500) / 18.8 (477) | kV/mm (V/mil) | ASTM D149 |
| Dielectric constant | 4.3 / 4.4 / 3.7 | — | At 25 °C and 125 kHz; ASTM D150 |
| Dissipation factor | 0.020 / 0.020 / 0.024 | — | At 25 °C and 100 kHz; ASTM D150 |





















