[TheForge] Re: Steel question OT

[Andrew Vida]

David E. Smucker wrote:
> 
> ----- Original Message ----- From: "Andrew Vida" <osan at netlabs.net>
> To: <artgawk at thegrid.net>; "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Monday, January 01, 2007 10:04 AM
> Subject: Re: [TheForge] Re: Steel question OT
> 
> Andy, what form or section is this "wrought iron"? 

	Many different forms, but the largest are 12" channels.  There's plenty 
of welded-seam pipe and boiler plate, about 3/8" gage.  All manner of 
bolts and 2" and 4" bar.  Unfortunately a lot of the nice stuff went to 
the melter

 > In the late 1800's
> some wrought iron was case hardened.  This was especially true of large 
> nuts and bolts and some rod forms.  I am not aware that this was done 
> with structural forms.  Some manufactures of equipment would state the 
> higher quialty of their machines by saying that "hardware is case 
> hardened wrought iron".

	Any idea how the introduction of the C affected the corrosion 
resistance?  Would it lower it or does the presence of silicates retain 
the resistant properties?