Carburising of A410
Carburising of A410
(OP)
What is the cycle to be followed for carburising of A410 to get case depth of 1.0-1.2mm case depth.
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RE: Carburising of A410
RE: Carburising of A410
When I said A410 it is AISI 410. The chemical composition is
C: 0.15 Max,
Mn: 0.5 - 1.0 Max.
Si: 0.5-1.0
Cr: 11.5-13.5
S: 0.03Max.
P: 0.04Max.
RE: Carburising of A410
The high chromium content raises the temperature at which austenite forms and lowers the temperature at which delta-ferrite forms. So, to get the material austenitc (almost an necessity), you will have to be 1775-1820F. The austenite will staurate and form Chromium Carbides above 0.50% C. Of course, you will have problems with retained austenite (not to mention cracking) if you tried to quench it.
If that wasn't enough problems, most carburizing atmospheres, while reducing to iron, are oxidizing to chromium and chromium carbide. So, the chormium oxide layer on the surface will impede carburization and any chromium carbides that form near the surface will begin to oxidize, causing more problems.
I won't say it can't be done, but I will say that, as far as I know, it isn't done on a commercial basis. Unless you want to start a research project, it would be best to try and find another solution.
rp
RE: Carburising of A410
I hope this helps.