U/S Threads in 17-4 after H/T - H900
U/S Threads in 17-4 after H/T - H900
(OP)
I'm currently working on improving a process to eliminate reworking threads on 17-4 parts with internal threads after they have gone thru the H900 H/T process. They are mostly tapped holes. My plan is to do some testing using larger class taps. Any info anyone could provide to me to shorten my testing/developement time would be great.





RE: U/S Threads in 17-4 after H/T - H900
To my opinion you will have to re-tap the thread using a tap material that can tap the 17-4PH at the H900 condition.
RE: U/S Threads in 17-4 after H/T - H900
You'll likely not make capability heat to heat as israelkk says.
RE: U/S Threads in 17-4 after H/T - H900