-
There are a couple of mistakes on that table:
1) Young's modulus unit should be GPa. Figures given for Al and Ti64 look about correct. For woven carbon it will be between 50-110 GPa. UD will be 150-300 GPa depending on the fibre.
2) Unit for strength should be in MPa. N/m^2 is valid for strength, but the figures given are not in N/m^2, they're in MPa. There's no yield strength for carbon as it doesn't yield and draw like a metal.
3) Tensile strength (UTS) figures given there for carbon are not correct. For woven carbon you'd expect to see 600 MPa for the lowest strength fibres up to about 1600 MPa for the strongest fibres. The range for UD will be 1600 MPa up to about 3700 MPa depending on the fibre and resin.
4) Density figures are not correct there. In kg/m^3 it would be 2700 for Al, 4400 for Ti64, and 1800 for carbon. Carbon is significantly lower density than common metals.
You are reading a single comment by @Jonny69 and its replies.
Click here to read the full conversation.
Jonny69
The Young's Modulus is a property of the carbon fibre composite itself, not the specific tube. Each material has a Young's Modulus. It's just a measure of how stiff that material is.
"Tensile strength" is the most useful stat to pay attention to.