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They look the same. They shine the same. Both are lighter than aluminium and harder than steel. But if you use the wrong one in your project, you risk a cracked part, unwanted vibration or… simply throwing money away.
In the world of materials engineering, "carbon" is not a single word. It is a whole family of solutions. The two most important are Ortotropowe (0/90°) and Quasi-Izotropowe. How do they differ, and why does your project probably need the first one even though everyone talks about the second?
Most carbon fibre sheets available off the shelf on the market (including our top T300 prepreg sheets) have a fibre orientation of 0/90°. This means the carbon tows run alternately along and across the sheet.
This is not cost-cutting – it is deliberate engineering. If you are building a drone frame, a simple bracket, a profile or an enclosure, the forces act on your part mainly vertically and horizontally. 0/90° fibres provide maximum stiffness exactly where those forces strike (when cut from the sheet appropriately).
You pay for strength in the X and Y axes. You don't pay for unnecessary diagonal fibres that, in simple structures… simply sit there idle.
Werdykt: For the vast majority of workshop, model-making and engineering applications, a 0/90° sheet offers the best price-to-performance ratio.
Pro Tip: If you are using our 0/90° sheet and want greater torsional resistance in arms (from motor torque), consider cutting the parts at 45° to the fibre weave. This gives you a compromise close to quasi-isotropic sheets, using a cheaper material that is available off the shelf.
But what if your part is a complex arm in an industrial robot? What if the forces twist the part in every direction? Then a plain 0/90° sheet can have a weak point under forces acting diagonally.
This is where our heavyweight comes in: Quasi-isotropic sheets made to order.
This is not a simple "sandwich". At ExaTec we use an advanced hybrid here:
Outer plies: Classic 0/90° fabric (for appearance and longitudinal stiffness).
Core: High-quality fabric Multiaxial +/-45°.
Co to daje? Thanks to the multiaxial core (fibres laid directionally without unnecessary crimp), the sheet gains enormous torsional strength. It behaves like solid metal – it is equally strong in EVERY in-plane direction.
It is the ideal solution where plain 0/90° carbon could delaminate or crack under extreme torsion.
Regardless of the layup, well-chosen carbon outclasses metals in key industries:
Medycyna (RTG/Tomografy): Did you know that carbon is "invisible" to X-rays? Operating tables made from carbon fibre sheets allow the patient to be X-rayed without the shadow of metal structures underneath.
Industrial robotics (EOAT): An aluminium robot gripper weighs 5 kg. A carbon one weighs 1 kg. A lighter arm = a faster line and lower power consumption. Here inertia is enemy number one.
Drony Wojskowe (UAV): Every gram of weight is a minute less flight time. 0/90° sheets are the standard here for arms and bodies – they provide stiffness without unnecessary mass.
👉 Building a frame, a simple structural part, a rack or a mounting plate? Don't overpay. Choose our proven T300 carbon fibre sheets (0/90°). They are available off the shelf and will take more than you think.
👉 Designing a part subject to torsion, complex shear forces or extreme multi-axial loads? Napisz do nas. Wyprodukujemy dla Ciebie quasi-isotropic sheets made to order.
