That is a good question. There are different grades of fiberglass, McMaster
Carr's structural is listed with a tensile strength of 60,000 PSI. Does
this make it stronger than aluminum?
John KK9A
To: <towertalk@contesting.com>
Subject: [TowerTalk] Solid Al vs Solid fiberglass ?
From: "Jim Thomson" <jim.thom@telus.net>
Date: Sun, 22 Jan 2017 15:06:23 -0800
Which is stronger, 1 inch 6061-T6 solid rod...... or 1 inch solid
fiberglass rod ?
I know what the tensile + yield strength is on 6061-T6...... but the typ
solid
fiberglass rod gets a bit tricky.
Extrapolating from metric to queens english, it appears that solid
fiberglass
rod has a typ tensile strength
of 100 ksi, and a yield strength of 88 ksi. I find this real hard to
believe, but I have zero knowledge of the
typ solid fiberglass rods sold for insulators for yagis and ants.
6061-T6 is typ listed as 48 ksi for tensile , and 39-40 ksi for yield.
I have an application where I have to either short out the oem 1 inch solid
fiberglass rod, or replace it with solid 1 inch 6061-T6 rod,
and this is way out on each ele half, like 200 inchs out from the
center...with another 204 inchs of tapered al tubing beyond each insulator.
If the fiberglass is stronger, I might just short it out with an Al strap.
If I knew the aprx yield strength of the solid fiberglass, then I could plug
the numbers into the dx eng mech software.
Jim VE7RF
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