Any info in IR-805 steel?
Any info in IR-805 steel?
(OP)
We sometimes heat treat IR-805 steel for a customer to a process they specify (1825°F, air blast, double temper 1130° then 1100°). I would like to learn more about it - for example, is it susceptible to cracking if there is a delay after the air blast and before the temper? (Sometimes our schedule works better if we can do the first operation Friday and do the other operations Monday morning for a Monday delivery.) Google wasn't able to return anything relevant (apparently IR-805 is a really popular letter/number combination for a lot of things that aren't steel) and I'm hoping someone here could point me in the right direction of where to look.





RE: Any info in IR-805 steel?
This may be a long shot, but I have seen "IR" prefixed on Ingersol-Rand steel grades and material specs for rock drill / hammer tool steels. These are usually proprietary grades and / or modifications of AISI alloy steels or carburizing steels.
Again, a long shot.
Perhaps, also you customer for whom you are doing the heat treating should have some background???/
RE: Any info in IR-805 steel?
RE: Any info in IR-805 steel?
These castings are hardened by fast air cooling . During this process, you may encounter cracking, if the castings have been abused , or if the chemistry is improper. I have not experienced any cracking , due to delay in tempering . The double tempering though not very common is done to reduce retained austenite levels ( < 5%).
Hope it helps.
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