Stability of 316SS, without heattreatment
Stability of 316SS, without heattreatment
(OP)
Im machining a V block from 316 SS ,,,,,450 long by 70 mm square
And it has to stay dimensionally stable within 1 thou over about 20 years
Im doing it out of bar stock
If I just rough and machine it without any heattreatment would it be OK
And also can you recommend a heattreatment to demagnetise it
Best Regards
123Cat





RE: Stability of 316SS, without heattreatment
Good luck!
RE: Stability of 316SS, without heattreatment
Jesus is THE life,
Leonard
RE: Stability of 316SS, without heattreatment
Your 70 mm thick V block should not pose any problem ,I feel. Please let us know your experience once you have finished.
RE: Stability of 316SS, without heattreatment
Yes it holds parts in a high vacuum and the max temp is 95C when it is dishwashed, for cleaning , after finishing
Hope this doesnt move it
And arunmrao yes you mean use sharp tools and, not to rough it too fast, or hard I guess
Its 304 or 316 grade
What is CF8.1 if I may ask
Thanks for the input
123Cat
RE: Stability of 316SS, without heattreatment
Let the feed rate be low, is what I meant.
RE: Stability of 316SS, without heattreatment
I suggest that you could stress relieve your 316SS block with sub-harmonic processing and put your mind at ease. This is the "accelerated seasoning" process that the high performance race engine builders have been using for years to accomplish what you are hoping to achieve.
Sub-harmonic processing does not cuase treatment distortion, relieves only thermally induced stress, and enables the workpiece to remain stable (and resist distortion when working in a high tmeperature environment).
Many of the world's most sophisticated components are made using this sub-harmonic stress relief process like space probe telescope components.
Best of Luck.
BTI Guy
RE: Stability of 316SS, without heattreatment
This could distort if you heat and cool it unevenly. After all a 70C temp change will cause about 0.5mm length change
= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be slowed down.