Surface

Surface Thickness (mm)

Inner Diameter of Heat Transfer Surface (mm)

Contact Area with

Heating Block (mm2)

Average Surface Roughness (mm)

Method*

Smooth

5.2

20

196 (14 × 14)

7.75

Laser

Blasted

5.2

20

196 (14 × 14)

3.52

Contact

Copper-plated

5.2

20

196 (14 × 14)

40.8

Laser

Finned

5.2

20

196 (14 × 14)

0.68

Contact