[TheForge] Re: hot vs cold rolled

[Roger Olsen]

Yes,  cold rolled has more strict requirements than hot rolled.  Hot
rolled is no longer 'mild steel'  it is A-36.  The tolerances are large.
You may find a bar of A-36 that will analyze out close to cold rolled but
the next will damn near qualify as tool steel.  At  one time I had the
chemical analysis for both cold and hot rolled but have no idea where it
is now.  Maybe someone on the list will post it,  I would like to see it
again.

Here in the North West we have an incredibly talented smith by the name
of Darryl Nelson,  he is best known for his highly detailed and realistic
animal heads.  There is such an investment in time on these pieces that
the small amount more paid for cold rolled is not a consideration yet he
says the difference is remarkable.  Now that 'pure iron' is available he
uses that for animal heads and it is even more agreeable to the process
than cold rolled.  At  a recent conference he had an elephant head he had
forged from a single piece of I think 2" square.  He had mentioned that
until pure iron was available elephants were next to impossible to forge
from one piece because the ears being so large and thin, the material
would not stand up to the process.

Roger Olsen
_________________________________

Barking Crow wrote:

> Is there any difference in the composition of hot and cold rolled mild
> steel?
>
> Thanks,    Jeff Valentine
>
> Barking Crow
> http://www.barkingcrow.com
> mail@barkingcrow.com
>
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