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What steel type and what is your HT method?I am doing my own differential heat treating. I have my own oven. I live near Detroit. I could ship a bunch of blades in a flat rate box anywhere in the US so not sure if location matters. I dont know why it would matter if the cryo was not done at the same time as the heat treating "tell me why I am new to this". thanks
I could do my own hardening then send the knives to a HT place n they could do the tempering and cryo. Correct me if I am wrong.
Cryo should be done as part oif the H/T,if you heattreated them then sent them to some one for just cryo you would lose most of the advantages of doing cryo.What type steel are you useing and how do you H/T.Also a location for you would help with figureing out who to send them to.
Stan
Stan is right its not going to help much if not done as part of the quench. Simply put
and without getting into some sort of a flame war-RA retained austenite,may never be
converted to martensite if not part of the quench. Have you read the stickies?
Ken.
8670 will not be improved by cryo,also if you did the hardening then sent it for cryo without tempering you have the risk of the steel forming micro fractures and alot of the retained austinite will stabilize while it is in shipping,so the cryo would not so you any good.
When i do my H/T I do not let the steel rest,straight from oven to quench plates,as soon as I reach room temp they go into cryo,as they come out of cryo when they reach room temp.they go into temper.It is all one process to get the best results.
Stan