[TheForge] Scrape steel question?

[David E. Smucker]

Mitch,  If described as chrome moly nickel, I would say that you have a 4340 
steel.  This would be a common high performance high strength steel.  Heat 
treated it would take the teeth off a hack saw.  This will make good tools

It also might be a steel like 8620 and case hardened.  This would also be a 
steel that is next to impossible to saw through but will have a low carbon, 
softer core.  Will make OK tools in some cases but not as good as the 4340. 
8620 also contains moly.  I have seen very good tongs made from 8620.

Just try it.  For many tools all you need to do is forge it and let it air 
cool.  Then see how it works as a tool.

By the way, what did you do with the bikes?

Dave Smucker


--------------------------------------------------
From: "Mitchell P Widham" <widha8d3 at erau.edu>
Sent: Monday, May 19, 2008 1:45 PM
To: <theforge at mailman.qth.net>
Subject: [TheForge] Scrape steel question?

>
> I have access to some 9/16" round, chrome-nickel hardened steel, which
> came from U-shaped bicycle locks, Master lock brand, I know that this
> stuff is very hard to cut. My question is, would this stuff make decent
> tools, and if so any special hardening or treating rules?
>
>
> Mitch Widham
> Operations Supervisor
> Campus Safety Department
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> mitchell.widham at erau.edu
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