04-01-2015, 06:54 PM
Not to hijack Willies thread but this is a question about 4140. I recently bought some material from speedymetals.com and got some material from their fire sale which was described as "7/8" Round 4140 HT Cold Roll 46.5" Randoms" so I bought two of them. Once they arrive I realized the "HT" probably meant heat treated. Is this going to be a problem to machine?
Ed
Ed