>I do have a question or two. I have determined that with my three antennas I
>will need a mast capable of 65000 PSI Y.S. It also recommends .250" wall
>thickness. Will it matter what the wall thickness is as long as the Y.S. is
>at least the desired value?
Yes, it will. The actual amount of load the mast will take is a function of
BOTH the yield strength of the material AND the cross-sectional dimesnions
(OD and wall thickness) of the mast.
The supplier I found claims that his 4130 .250"
>wall is rated at 100,000 PSI or better and that I probably could go with
>or .156" wall instead. Any thoughts?
Your supplier is suggesting that you can trade off some wall thickness for a
material of higher yield strength. He is correct. You will have to do some
calculations to know if it a wise tradeoff or not.
Where can I find data that will show
>Y.S. based on wall thickness?
You can't find that data since Y.S. in only a function of what alloy the
mast is made of and not its dimensions. The total load a mast will take is
a function of both Y.S. and the mast dimensions.
Hope this helps.
PS You might ask Steve for a copy of my article that I wrote years ago
telling how to make the calculations I referred to above.
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