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Which alloy can I use for nitriding crucible?

Q. I am nitriding H13 tool steel by salt bath (liquid) nitriding. I am using titanium crucible for this process, but it is very expensive. What kind of alloy can I use for a long time? Is 316 Ti stainless steel usable?

Thank you,

Erdoğan Bengü
- Sakarya, TURKEY
2001
publicly reply to Erdoğan Bengü

A. Type 310 would be much better than 316Ti. That's if you are having your crucibles fabricated. If you are having them made as castings, HK30 would be a good alloy to specify (it is a casting version of the wrought type 310).

Bill Reynolds [deceased]
consultant metallurgist - Ballarat, Victoria, Australia
We sadly relate the news that Bill passed away on Jan. 29, 2010.
2001
publicly reply to Bill Reynolds

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