] [Thread] [Date] [Author]

[Mark Gilligan <mark.gilligan(--nospam--at)sbcglobal.net>]

It was stated: 
"Steel can become brittle over time, especially with
some of the older steel manufacturing processes at the
turn of the century.  Carbon content and impurity
content, corrosion and oxidation will degrade steel
over significant time, and therefore affect
weldability."

I would like further insight into the above statement.
 I understand that steel will corrode and oxidize but
it is not clear what mechanism will cause the steel to
become brittle after many years of service.

Mark Gilligan

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