|Table of Contents |Section Contents|

PROPERTIES OF ROUND TUBING

wa = weight per foot of aluminum tubing, lb
ws = weight per foot of steel tubing, lb
A = area, in^2
I = moment of inertia, in^4
k = radius of gyration, in
Z = section modulus, in^3

Size        wa    ws     A     I     k     Z    
----------- ----- ------ ----- ----- ----- -----  
1 x 1/8     0.416  1.128 0.344 0.034 0.313 0.067
1 x 1/4     0.713  2.003 0.589 0.046 0.280 0.092
1-1/2 x 1/8 0.653  1.769 0.540 0.129 0.488 0.172
1-1/2 x 1/4 1.188  3.338 0.982 0.199 0.451 0.266
2 x 1/8     0.891  2.670 0.736 0.325 0.664 0.325
2 x 1/4     1.663  4.673 1.374 0.537 0.625 0.537
2-1/2 x 1/8 1.129  3.050 0.933 0.660 0.841 0.528
2-1/2 x 1/4 2.138  6.008 1.767 1.132 0.800 0.906
3 x 1/4     2.614  7.343 2.160 2.059 0.976 1.373
3 x 3/8     3.742 10.51  3.093 2.718 0.938 1.812
4 x 3/16    2.717  7.654 2.246 40.90 1.350 2.045
4 x 3/8     5.167 14.52  4.271 7.090 1.289 3.544
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