4340 case depth
4340 case depth
(OP)
Hi
What case depth can be achieved with carburizing 4340?
Thanks!
Brendan
What case depth can be achieved with carburizing 4340?
Thanks!
Brendan
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RE: 4340 case depth
I have information (Bethlehem) that says you can get 0.075" depth with no problem.
RE: 4340 case depth
RE: 4340 case depth
4340 isn't a carburizing grade, but 4320 is. 4340 is excellent for through hardening, and moderate for induction hardening. Perhaps you should provide more details about your application then we can more tips.
RE: 4340 case depth
What I mean is that the core hardness is 50-55 HRc
so it needs special manufacturing procedures.
the effective case depth should be measured
visually because of the core hardness.
RE: 4340 case depth
Ed Danzer
www.danzcoinc.com
www.dehyds.com
RE: 4340 case depth
It has been my experience that carbonitriding will normally give a much thinner case than straight carburizing. I would say that the thicker case as posted above would be possible though I don't see a need for the thicker case with the much harder core seen with 4340 unless you want to lower the core hardness.
RE: 4340 case depth
We are manufacturing a forged crankshaft currently out of 8620, It uses needle bearings on the journals and are looking for a more fatigue resistant material.
Thanks again!
RE: 4340 case depth
Ed Danzer
www.danzcoinc.com
www.dehyds.com
RE: 4340 case depth
http://www.pennsylvaniasteel.com/index.php
RE: 4340 case depth