Tube - Square - Fabric - 3.985 x 4.22 x 66 inch
Unlike metals which have similar properties in all directions (isotropic), the properties of composites are varying, dependent on the orientation of the fibers in each layer. This particular carbon fiber fabric square tube has an internal diameter (ID) of 3.985" and an outer diameter (OD) of 4.22" The outer ply of material on this tube is a 2x2 twill weave (diagonal appearance seen below) which will prevent fiber breakout better than unidirectional material. Thus, fabric tubes provide an ideal surface for machining. The core of this tube is almost always comprised of multi-directional "uni" plies which makes most carbon fiber fabric & unidirectional tubes ideal for bending and compression applications.
Square 3.985" ID Roll Wrapped Fabric Tubing Facts
- Ideal for bending and compression applications
- 2x2 twill weave provides a traditional carbon fiber aesthetic
- 3.985" ID x 4.22" OD x 66" Long
- Gloss Finish
- Learn about our Roll Wrapping Process
Features & Benefits
Fabric roll wrapped tubing offers many benefits over uni-directional and even filament wound tubing. That isn't to say it is the best however. Here are a few reasons you may wish to consider fabric roll wrapped tubing for your application.
- Superior machine ability
- Much better durability by reducing the potential extent of fiber breakout if drilled, machined or damaged
- Typical aesthetic associated with carbon fiber products
- Most "fabric" tubes contain a majority 0° plies in the layup allowing for the most effective bending load support. (whereas filament wound tubes cannot achieve angles less than ~7°
Additional Information
| Application | General Purpose |
|---|---|
| Shape | Square |
| Materials | Standard Modulus Carbon |
| Pattern | 3k 2X2 Twill Weave |
| Color | Black |
| Finish | Cello Wrap Gloss |
| Height | 4.22 |
| Wall Thickness | 0.118 |
| Major ID | 3.985 |
| Major OD | 3.985 |
| Minor ID | 3.985 |
| Minor OD | 3.985 |
| Inner Corner Radius | 0.25 |
| Outer Corner Radius | 0.3125 |
| Length | 66 |
| Length (max continuous) | 66.0 |
| Linear Density | 1.273 |
| Volumetric Density | 0.055 |
| Weight | 6.999 |
| Primary Fiber | Tenax UTS50 |
| Primary Resin / Hardener | Eporite EHM32 |
Engineering Properties
All laminate properties and mechanical calculations are based on Classical Lamination Theory and should be used as a reference only. Rock West Composites does not guarantee these properties or calculations.
| Avg EX Young's Modulus | 1.457E7 |
|---|---|
| Avg EY Young's Modulus | 3320000.0 |
| GXY Shear Modulus | 2383000.0 |
| X Tensile Yield Strength | 87100.0 |
| X Compressive Yield Strength | 87100.0 |
| Y Tensile Yield Strength | 18140.0 |
| Y Compressive Yield Strength | 23220.0 |
| XY Shear Strength | 18730.0 |
| CTEX | -4.22E-07 |
| CTEY | 4.65E-06 |
| Poisson's Ratio vXY | 0.46 |
| Poisson's Ratio vYX | 0.105 |
- "X" is along the length of a tube, rod, plate, or panel.
- "Y" is around the perimeter of a tube, perpendicular to the length of pultruded parts, or along the width of a plate or panel.
Layup Orientation
25517 Rev A
| Ply # | Orientation (degrees) | Location |
|---|---|---|
| 1 | 0 | Inside |
| 2 | 0 | ↓ |
| 3 | 0 | |
| 4 | 0 | |
| 5 | 45 | |
| 6 | -45 | |
| 7 | 0 | |
| 8 | 0 | |
| 9 | 45 | |
| 10 | -45 | |
| 11 | 0 | |
| 12 | 0 | |
| 13 | 45 | |
| 14 | -45 | |
| 15 | 0 | |
| 16 | 0 | |
| 17 | 0 | |
| 18 | 0 | |
| 19 | 0/90 | Outside |
- 0° fibers maximize bending stiffness and run along the length of the part. Consider bending a tube over your knee.
- 45° fibers maximize torsional stiffness and are typically plied together in an opposing manner, i.e. ±45°. Consider twisting a tube like a vehicle's driveshaft.
- 90° (or "hoop") fibers maximize crushing stiffness and generally assist in overall durability. Consider laying a tube on the ground and stepping on it.
Technical Specifications
Radius of Tubing
The inner and external corner radii are measured by hand with a radius gauge with no tolerance called out.- Internal Radius: 1/4”
- External Radius: 5/16”.
We cannot supply theoretical values for this tube at this time. For specification sheets and other data we can supply please review our Technical Spec page.