see my earlier post also. I forgot to mention A513 DOM tube which has a
little less yield than normalized 4130 with 72kpsi yield at about 40% of
the cost. I use it when high yield stuff is needed. Jorgensen might
have it, onlinemetals here in Seattle stocks it, pretty convenient for me.
One more thought - wander through SIMS Metal (recycling) on south 1st st
(1900 Monterey) in San Jose (next door and north of the junk recycling
yard). I've found 4130 & 4140 which they sell for the usual recycle
$/lb for scrap usable steel. It's a matter of luck if the stuff is
marked, but worth a try. Also, there is a lot of aluminum and they sell
new small structural hot rolled steel up to 4x4 square and 6" WF beams.
Sometimes there is a lot of drill pipe which is a pretty strong (and
hard alloy), nice to build 35' masts for stuff.
Grant KZ1W
On 1/4/2013 12:26 PM, Jerry Gardner wrote:
Anyone know of a source for a 2" OD 5 to 20 foot steel mast in the
vicinity of the S.F. Bay Area? Something with around 87 k psi yield
strength would be ideal.
Lots of on-line places sell these, but the shipping cost is greater than
the cost of the mast itself. If there's someplace close to me that stocks
something suitable, I'll rent a U-Haul truck and go pick it up.
73, Jerry
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