Epoxy System Enables Reliable Heat Transfer

EPOXIES’ 70-3812 NC is a two component, aluminum filled epoxy system. The system is used for making heat resistant tools, parts, or bonds that require very high thermal conductivity and heat resistance.

Viable for a variety of heat sink applications, common applications include fin to base, folded-fin set to base, pin-fin set to base, and cold plate tube to extruded base. Specifications include:

  • Color Grey
  • Viscosity, 25°C,
  • Resin 130,000
  • Mixed 8,000
  • Specific Gravity, 25°C 1.81
  • Working time, 100 grams, 25°C 5 Hours
  • Durometer, Shore D
  • 25°C 90
  • 100°C 65
  • Tensile Strength, psi, 25°C 9,000
  • Aluminum to Aluminum
  • 1” overlap 2,500
  • Compressive Strength, PSI, 25°C 18,500
  • Mix Ratio, by weight 100:10
  • Operating temperature, °C -55 to 155
  • Coefficient of Thermal Expansion, °C 28 x 10-6
  • Thermal Conductivity, W/m- °K 4.5
  • Outgassing
  • % TML .91
  • % CVCM .07

 For more details, visit EPOXIES.

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