🚀 go-pugleaf

Hi,

        As the only science teacher in a small rural community, I am
often asked science questions by the local residents.  Recently, a
rancher was building some new pipe corrals.  He was surprised to find
that the pipe seemed to be magnetized.  He also found that when welding
the pipe, the metal would splatter.  He asked me for an explanation to
this.  I remember a discussion on this listserv earlier about the
magnetic properties of metal coat hangers.  Is this related?  Does it
make any difference that this pipe was used in an oil filed previously?
Could the pipe be de-magnetized by hitting with a hammer?  Why does the
metal splatter when heated to high temperatures?
        I am a little embarrassed to not have the answer to these
relatively simple questions, but if any of you have the time to respond,
please let me know.

                                        Thanks,
                                        Susan


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Susan Wilson
Branson School
Box 128
Branson, Colorado   81027

suwilson@usa.net