"Ignoramus15568" wrote in message
...
On 2008-04-15, spaco wrote:
This doesn't fit the scenario for wrought iron at all. Cast iron is
brittle for other reasons. The lower the carbon content, the less
brittle and work hardenable the material.

I do not think that Titanik's hull plates were cast iron, can anyone
clarify?

i


The hull plates were made of the new wonder product, steel.

Unfortunately, we were still working out the manufacturing processes for
steel at the time.

http://dwb.unl.edu/Teacher/NSF/C10/C.../aa022800a.htm

It was the best there was at the time, but there were some unforeseen
limitations. The process left it with Phosphorus levels 4 times modern
levels and sulfur twice as high.

Paul K. Dickman