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Cheer up TRBill

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Too much sulphur or phosphorus in the steel will make it brittle and prone to failure.

I think I did a similar experiment with Zinc or Magnesium in AP Chem, which I failed. Slowly bending it won't brake it, but a rapid snap results in a weird sheering effect.
 
DrEntropy said:
That had to have seen some serious temperature along with shear force. Somewhere around 1600*~1800*F I'd think.
Click to expand...

Doc, this twin fork unit is a monster mooring post for
monster cargo ships. It is located right beside the
commercial ship pier.

The final shape of the shear indicates, to me, the force
moved from ocean side, across the steel and broke it toward
shore side. The final shape of the sheared steel edge
should be 180 degrees to the force being applied at the
instant of failure. 90 degree to the steel piece itself.
At least steel beams and steel girts fail in this mode,
from my field experience.

I am wondering if a giant ship might have plowed into it
at very slow speed but massive momentum?

d
 
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