AlVsFe

Aluminum or Iron Substrates?

Version 5 thinsats weigh 2.5 grams per 0.025m², or 0.1kg/m². So far, we've been considering aluminum substrates. What about iron?

Assume thinsat substrates are 80% of the weight; 0.08kg/m².

Z

AtW

kg/m³

Ω-nm

W/m-K

Z/A

th μm

mΩ/□

K/W

Al

13

27

2700

27

237

6.3

30

0.9

140

Fe

26

56

7870

96

80

12.1

10

9.6

1250

Iron? No. Although the Z²/AtW Rutherford scattering ratio is double, it is 10x more resistive electrically and thermally.

AlvsFe (last edited 2013-08-17 06:38:01 by KeithLofstrom)