Baking custom 455 after pickle
Baking custom 455 after pickle
(OP)
Is it really necessary to bake custom 455 at 300/350F after a acid pickle in HF and nitric?
If it is needed what is the reasoning behind it?
If it is needed what is the reasoning behind it?





RE: Baking custom 455 after pickle
I think the bake is to remove hydrogen introduced during the pickling op, which can otherwise lead to hydrogen embrittlement. High strength stainless like Custom 455 is a bit vulnerable to that sort of contamination. However, those guys (metal and metallurgy) will know for sure.
RE: Baking custom 455 after pickle
For Custom 455 in temper conditions H950 and H1000, there is a mandatory 3-hr bake @375 F beginning within 4-hrs after acid etch [pickling].
Regards, Wil Taylor
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