Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work.

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Default Best Bet for Mystery Steel

On 2/20/14, 6:05 PM, Bob La Londe wrote:
I've got a piece of mystery steel about 2' x 6' x .78". It was given to
me by a friend when he was moving. I have a couple projects for it that
are going to require machining. What would be the best guess for the
alloy to machine conservatively but without killing cutters? A36? 1018?


Do a spark test...

http://en.wikipedia.org/wiki/Spark_testing


A bunch of videos are here... But I don't have time to wade through them
right now...

http://www.youtube.com/results?searc...ng+metals&sm=1

Erik
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