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TEEL Pultrusion on the right is corrosion and chemical resistant,
nonconductive and has a higher strength-to-weight ratio than the steel tube on the left. |
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| Comparative Properties of Structural Materials |
| Structural Property |
Pultruded
Rod & Bar |
Stainless
Steel |
Low Carbon
Steel |
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| Glass Content, % by weight |
70 |
- |
- |
| Flexural Strength,psi |
100,000 |
30,000-35,000 |
28,000 |
| Flexural Modulus, psi x 106 |
60 |
280 |
300 |
| Tensile Strength, psi |
100,000 |
30,000-35,000 |
27,000-33,000 |
| Tensile Modulus, psi x 105 |
60 |
280 |
300 |
| Impact Strength, ft.-lb./in. |
49 |
8.5-11 |
- |
Thermal Conductivity,
BTU/hr./sq. ft./°F/in. |
5 |
96-185 |
260-460 |
| Specific Heart, BTU/lb./°F |
0.24 |
0.12 |
0.10-0.11 |
| Rockwell Hardness, scale |
80H |
90B |
72 |
| Dielectric Strength,volts/mil |
>400 |
- |
- |
| Specific Gravity (25°C) |
2.10 |
7.92 |
7.9 |
| Density, lb./cu. in. |
0.072 |
0.29 |
0.29 |
Thermal Coefficient of Expansion,
in./in./°F x 106 |
3 |
9-10 |
6-8 |
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