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Date: 02/06/03 at 11:35 PM
Posted by: Louis
E-mail: extremeall@aol.com

I am trying to find out about the steel described below, the composition looks a lot like 4130, but hardens a lot different, I put a piece of 4130 and piece of the ? in oven
at same temp. and quench the same (both pieces are same size), the 4130 checks 50-54-Rc the ? checks 64-66 Rc.
I sent the steel in question to lab and had analyzed and shows following--carbon 0.28--manganese 0.71--sulfur 0.01
phosphorus 0.0008-- silicon 0.22--nickel 0.01-- chromium
0.74-- molybdenum 0.15 copper 0.01-- vanadium <0.01
--titanium <0.01 iron bal.
Can you tell me what grade the steel in question is ? and why it gets so much harder than the 4130, does the extra manganese cause it to get this much harder? I would really appreciate it if you could help me. Thank you very much, Louis

Follow Ups:

  Re: opinion --on type of steel--composition listed Tariq Shabbir   Posted at: 06/22/03 (0)

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