Material Specifications
Elogium.
Carbon fiber woven in three directions, orthogonally. Elogium is unique in the three-dimensional carbon fiber world, as every fiber is held under tension during the cure.
The block
- Dimensions14 × 14 × 36 in
- Fiber fraction90 to 91% by volume, fiber to resin
- WeaveThree directions, straight fiber on every axis
- CureEvery fiber held under tension through the cure
- FormCured block, ready to machine
- Annual yield250 tons per Astra Porta
- Machine reset per weave2 hours
- Strength and modulusPrivate
Available to strategic partners only.
Against other carbon fiber
By class.
| Unidirectional prepreg laminate | Woven fabric laminate | 3D woven preform | Elogium | |
|---|---|---|---|---|
| Fiber fraction by volume | 50 to 60% | 45 to 55% | 50 to 60% | 90 to 91% |
| Fiber through the thickness | None | None | An interlaced binder yarn | Straight fiber on all three axes |
| Fiber tension during cure | Plies laid up slack; consolidated by pressure | Fabric laid up slack; consolidated by pressure | Preform relaxed before infusion | Every fiber held under tension through the cure |
| Thickest section in one cure | About 1 in; thicker parts are built in stages | About 1 in; thicker parts are built in stages | About 2 to 6 in | 14 in |
| What you receive | Prepreg roll, to be laid up and cured under pressure | Fabric or prepreg, to be laid up and cured | A dry preform that still needs a mold and an oven | A cured block, ready to machine |
| Machined features | Cut features expose the ply interfaces | Cut features expose the ply interfaces | Binder crimp lowers in-plane properties | Machined billet remains load-bearing under complex geometry |
| Strength and modulus | Published | Published | Published | Private |
Ranges for the first three columns are drawn from published aerospace prepreg data sheets, peer-reviewed studies of woven and 3D woven carbon composites, and NASA reports on thick laminate cure and 3D orthogonal weaving. Elogium strength and modulus data are held privately.