Products > Heat Sinks

Heat Sinks


Copper Composites
Heat Sinks &
Laminated Sheets

Marketech offers special high conductivity and low thermal expansion metals and ceramic materials. All materials are available as finished components and in sheet form. Metals are available either as composites or as laminated sheets.

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Laminated Sheets - Copper/Moly/Copper Click here for pdf data sheet (104k)

Cu/MoCu sheets have very high in plane conductivity provide by layers  of copper and low thermal expansion provided by the inner layer  of molybdenum. These laminated sheets have the ability to spread the heat from a concentrated heat  source and then dissipate the heat through the layers. They also:

  • Offer an economical solution to many applications
  • Will not delaminate and can resist repeated 850° C cycles
  • Available in several standard ratios and many thicknesses for tailored TE machining
  • Are lower weight than WCu composite materials
  • Are available in larger and thinner sheet size
  • Utilize copper that is easily plated
  • Can be machined by EDM

Tungsten/Copper Infiltrated Composites Click here for pdf data sheet (104k)

WCu composites are made by infiltrating, under vacuum, uniform controlled porous blocks of tungsten with molten copper. This results in a material with an interconnected copper matrix that has high thermal conductivity in all axis, low thermal expansion, and good electrical conductivity, Copper content can range between 10% and 25%.

Molybdenum/Copper Composites Click here for pdf data sheet (104k)

MoCu alloys are made by sintering molybdenum and copper together. This results in a heat sink of lower density, low CTE and excellent thermal conductivity. Other features include:

  • Sheets can be stamped when moly is less than 70%
  • Non magnetic
  • Relatively low density
  • Can be gold or nickel plated

360-379-6707@mkt-intlEmail Us192 N. Otto Street Port Townsend, WA 98368