Stainless Steel Tube-Fin Heat Exchangers

The Aspen and 4000 Series tube-fin heat exchangers are ideal for applications where deionized water or corrosive fluids are used and a high performing heat exchanger is required. When a slightly lower performance/size ratio is acceptable, the Aspen offers better value - 80% of the performance of the 4000 Series at approximately 50% of the cost. The Aspen also has lower air and liquid side pressure drops than the 4000 Series. However, when high performance in a small envelope is required, the 4000 Series is the best option.


  • Heavy-walled, seamless stainless steel tubes are expanded into copper fin with an extruded full collar. The copper fin and the excellent metal-to-metal contact between the tube and the fin collar ensure optimum thermal performance.
  • All the wetted surfaces are 316L stainless steel, so they are ideal for use with high purity and/or corrosive coolants such as deionized water.
  • The welded stainless steel frame and fan plate offer durability and strength. Heat exchangers are 100% leak tested to 150 psi (10.3 bar). The Aspen has 0.020” (0.5 mm) wall tubing and the 4000 Series has 0.028” (0.7 mm) wall tubing.
  • The integrated fan plate acts as a plenum to ensure uniform air-flow distribution through the core, thus maximizing performance. It also enables easy fan installation.
  • With our Aspen Series, our proprietary manufacturing process expands the tubes into the copper fin without the use of oils and our liquid return design eliminates potential particle trapping sites, which can contaminate cooling fluid. Argon-purged welded joints further ensure cleanliness.

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Model AS04-05G01

Model AS04-10G01

Model AS06-08G01

Model AS06-16G01

Model AS08-10G01

Model AS08-20G01

Model 4105G1

Model 4110G10

Model 4120G10

Model 4210G10

Model 4220G10

Model 4310G10

Model 4320G10

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Lytron Inc,

55 Dragon Court,

Woburn, MA

Lytron specializes in custom liquid cooling solutions. We design and manufacture cold plates, chassis, chillers, cooling systems, and heat exchangers for some of the most demanding thermal management applications. Learn More.

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