I bought some 45 pound barbell weights at a garage sale to use as a boat
mooring. They are in pretty good shape. I intend to leave them at the
bottom of the lake; will they rust away? I don't care about some surface
rust; I just don't want them to disappear.
If they will rust, I have some epoxy varnish. Presumably there will be no
UV to degrade it; will it prevent the rust? Thanks.
(reading this, it sounds a bit silly; but I am serious)
If you can keep the oxygen away, then it won't rust, at least, not
Unfortunately for you, the water has oxygen in it and it will
'oxidize' very quickly. Those cheap barbells filled with concrete
Not really suitable for this use. Moorings need to be pulled up and
inspected annually anyway. Moorings are usually based on a galvanized
mushroom anchor that is not only very heavy, but works it's way into
Yes, they will rust.
Just recently salvers raised a Confederate submarine (sunk during the recent
unplesantness) and it sure enought had some holes in its structure. Of
course the submarine's iron plating was probably thinner than your barbells,
but I wouldn't count on much more than 150 years.
In alt.home.repair, on Fri, 10 Feb 2017 22:14:02 GMT, Ventcg
I don't know why you people never quote anything. I can't tell if your
answer is relevant.
The oxygen in the H20 is not what would make iron rust. It's bound to
the hydrogen. It's the dissolved oxygen, the same thing the fish
breathe, that would cause rust.
"Solubility decreases as temperature increases"
But it increases as depth and pressure increase:
" Solubility increases as pressure increases
Pressure is determined by atmospheric and
Altitude and depth affect solubility
Saturation is often defined for a particular
depth by adjusting for pressure
Pressure reduces the amount of bubble
What works in my area for small boat moorings is a garbage can filled
with concrete . You put a 2" or so pvc pipe through the can , fill with
cement and you have enough weight and a nice hole to run a chain
The cast iron will corrode fairly quickly . Sealing them will help.
Depends on a lot of factors. Barbells, as someone pointed out, are
probably a very low grade cast iron. Probably to the point of being
somewhat porous. Iron and cast iron are not the same thing either.
"Steel", likewise, is an alloy and covers a wide range of properties.
A blanket statement that cast iron will rust more slowly than steel is
incorrect, unless you specify more precisely which alloys and
production methods you are comparing.
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