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These are standard sizes
of aluminum 6061-T6 (61S-T6) round aluminum tubing stocked by most aluminum suppliers or distributors in the
United States and Canada.
Here is an interesting story for you. Shortly after the Muslim terrorists attacked the United States on
September 11, 2001, I began getting a lot of e-mail inquiries into available stocks of thick-walled aluminum
tubing. Sure, it seemed strange, but I didn't think much of it. Then, a couple years later, news outlets began
reporting increased activity detected by Iran and Iraq related to uranium enrichment using centrifuges. One of the
things mentioned was the requirement of specialty aluminum tubing with thick walls. Since inquiries kept coming
in, I began checking the IP addresses of the e-mails, and discovered that, indeed, all were originating from the
Middle East, Africa, and Asia. I contacted the FBI about it and they sent an agent to my house to investigate. He
asked a few questions, took my IP address list, and left. I never heard from him again, but within a couple weeks,
no more such requests for aluminum tubing were received. Coincidence?
Aluminum Tubing Vendors
| 3/16 |
0.035 |
no. 20 |
0.117 |
0.019 |
0.228 |
| |
0.049 |
no. 18 |
0.089 |
0.025 |
0.330 |
| 1/4 |
0.035 |
no. 20 |
0.180 |
0.027 |
0.324 |
| |
0.049 |
no. 18 |
0.152 |
0.036 |
0.432 |
| |
0.058 |
no. 17 |
0.134 |
0.041 |
0.492 |
| 5/16 |
0.035 |
no. 20 |
0.242 |
0.036 |
0.432 |
| |
0.049 |
no. 18 |
0.214 |
0.047 |
0.564 |
| |
0.058 |
no. 17 |
0.196 |
0.055 |
0.660 |
| 3/8 |
0.035 |
no. 20 |
0.305 |
0.043 |
0.516 |
| |
0.049 |
no. 18 |
0.277 |
0.060 |
0.720 |
| |
0.058 |
no. 17 |
0.259 |
0.068 |
0.816 |
| |
0.065 |
no. 16 |
0.245 |
0.074 |
0.888 |
| 7/16 |
0.035 |
no. 20 |
0.367 |
0.051 |
0.612 |
| |
0.049 |
no. 18 |
0.339 |
0.070 |
0.840 |
| |
0.065 |
no. 16 |
0.307 |
0.089 |
1.068 |
| 1/2 |
0.028 |
no. 22 |
0.444 |
0.049 |
0.588 |
| |
0.035 |
no. 20 |
0.430 |
0.059 |
0.708 |
| |
0.049 |
no. 18 |
0.402 |
0.082 |
0.948 |
| |
0.058 |
no. 17 |
0.384 |
0.095 |
1.040 |
| |
0.065 |
no. 16 |
0.370 |
0.107 |
1.284 |
| 5/8 |
0.028 |
no. 22 |
0.569 |
0.061 |
0.732 |
| |
0.035 |
no. 20 |
0.555 |
0.075 |
0.900 |
| |
0.049 |
no. 18 |
0.527 |
0.106 |
1.272 |
| |
0.058 |
no. 17 |
0.509 |
0.121 |
1.452 |
| |
0.065 |
no. 16 |
0.495 |
0.137 |
1.644 |
| 3/4 |
0.035 |
no. 20 |
0.680 |
0.091 |
1.092 |
| |
0.049 |
no. 18 |
0.652 |
0.125 |
1.500 |
| |
0.058 |
no. 17 |
0.634 |
0.148 |
1.776 |
| |
0.065 |
no. 16 |
0.620 |
0.160 |
1.920 |
| |
0.083 |
no. 14 |
0.584 |
0.204 |
2.448 |
| 7/8 |
0.035 |
no. 20 |
0.805 |
0.108 |
1.308 |
| |
0.049 |
no. 18 |
0.777 |
0.151 |
1.810 |
| |
0.058 |
no. 17 |
0.759 |
0.175 |
2.100 |
| |
0.065 |
no. 16 |
0.745 |
0.199 |
2.399 |
| 1 |
0.035 |
no. 20 |
0.930 |
0.123 |
1.467 |
| |
0.049 |
no. 18 |
0.902 |
0.170 |
2.040 |
| |
0.058 |
no. 17 |
0.884 |
0.202 |
2.424 |
| |
0.065 |
no. 16 |
0.870 |
0.220 |
2.640 |
| |
0.083 |
no. 14 |
0.834 |
0.281 |
3.372 |
| 1 1/8 |
0.035 |
no. 20 |
1.055 |
0.139 |
1.668 |
| |
0.058 |
no. 17 |
1.009 |
0.228 |
2.736 |
| 1 1/4 |
0.035 |
no. 20 |
1.180 |
0.155 |
1.860 |
| |
0.049 |
no. 18 |
1.152 |
0.210 |
2.520 |
| |
0.058 |
no. 17 |
1.134 |
0.256 |
3.072 |
| |
0.065 |
no. 16 |
1.120 |
0.284 |
3.408 |
| |
0.083 |
no. 14 |
1.084 |
0.357 |
4.284 |
| 1 3/8 |
0.035 |
no. 20 |
1.305 |
0.173 |
2.076 |
| |
0.058 |
no. 17 |
1.259 |
0.282 |
3.384 |
| 1 1/2 |
0.035 |
no. 20 |
1.430 |
0.180 |
2.160 |
| |
0.049 |
no. 18 |
1.40 |
0.260 |
3.120 |
| |
0.058 |
no. 17 |
1.384 |
0.309 |
3.708 |
| |
0.065 |
no. 16 |
1.370 |
0.344 |
4.128 |
| |
0.083 |
no. 14 |
1.334 |
0.434 |
5.208 |
| |
*0.125 |
1/8" |
1.250 |
0.630 |
7.416 |
| |
*0.250 |
1/4" |
1.000 |
1.150 |
14.823 |
| 1 5/8 |
0.035 |
no. 20 |
1.555 |
0.206 |
2.472 |
| |
0.058 |
no. 17 |
1.509 |
0.336 |
4.032 |
| 1 3/4 |
0.058 |
no. 17 |
1.634 |
0.363 |
4.356 |
| |
0.083 |
no. 14 |
1.584 |
0.510 |
6.120 |
| 1 7/8 |
0.508 |
no. 17 |
1.759 |
0.389 |
4.668 |
| 2 |
0.049 |
no. 18 |
1.902 |
0.350 |
4.200 |
| |
0.065 |
no. 16 |
1.870 |
0.450 |
5.400 |
| |
0.083 |
no. 14 |
1.834 |
0.590 |
7.080 |
| |
*0.125 |
1/8" |
1.750 |
0.870 |
9.960 |
| |
*0.250 |
1/4" |
1.500 |
1.620 |
19.920 |
| 2 1/4 |
0.049 |
no. 18 |
2.152 |
0.398 |
4.776 |
| |
0.065 |
no. 16 |
2.120 |
0.520 |
6.240 |
| |
0.083 |
no. 14 |
2.084 |
0.660 |
7.920 |
| 2 1/2 |
0.065 |
no. 16 |
2.370 |
0.587 |
7.044 |
| |
0.083 |
no. 14 |
2.334 |
0.740 |
8.880 |
| |
*0.125 |
1/8" |
2.250 |
1.100 |
12.720 |
| |
*0.250 |
1/4" |
2.000 |
2.080 |
25.440 |
| 3 |
0.065 |
no. 16 |
2.870 |
0.710 |
8.520 |
| |
*0.125 |
1/8" |
2.700 |
1.330 |
15.600 |
| |
*0.250 |
1/4" |
2.500 |
2.540 |
31.200 |
* These sizes are extruded; all other sizes are drawn tubes.
Information derived from the 78th edition of the ARRL Handbook 2001, Copyright, 2000.
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