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Hohmannfan
Hohmannfan
13:20
Fiber reference (tethers, etc.)

Steel peaks at around 2.4 GPa, density 7800-8000 kg/m³
Aramid(kevlar) and HPPE(UHMWPE, Dyneema) peak at around 3.6-3.7 GPa. Currently available commercial versions guarantee around 2.4-2.5 GPa. Density of 1440 and 970 kg/m³ respectively.
PBO(Zylon) is theoretically up to 5.8 GPa, but it has no commercially available variants, so a realistic yield strength is unknown. Potentially stronger than aramid, but a bit heavier at 1540 kg/m³

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