302 HQ Stress relieving

[Ledeburite]

I am looking for help with a new product our company is working on. Does anyone know the effects of "stress relieving" 302 HQ to the following parameters. The reason I question this is because the typical stress releive would be at 1650F. I was wondering what the effects of the modified treatment would be metallurgically.

600F for 8 hrs, 16 hrs, and 36 hrs
650F for 8 hrs, 16 hrs, and 36 hrs
700F for 8 hrs, 16 hrs, and 36 hrs

Any help is greatly appreciated!

 

[EdStainless]

the effect will be nearly zero.
You may get a little stress relief at 700F x 16hrs but not worth the effort.

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[Ledeburite]

Thanks for the quick response... I suspected the same. My only concern is that perhaps the temp might be just high enough to cause some carbide precipitation. It appears this will not be a concern.

Thanks again

 

[EdStainless]

if carbide precip is a concern then look at the carbon level. In alloys that are 0.02% and lower it takes many days to form carbides at 1200F.

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