Dear All,
Greetings.
Tempering of the shell/dished head plates for material SA 387 GR12 CL 2 is required to be carried out at 690 - 700 deg celcius for 160 minutes.
During actual tempering heat treatment the soaking temperature increased to 730 deg celcius and soaking time incresed to 180 minutes.
Please inform me what will be the effect on mechanical properties of the material due to above increase in soaking temperature and time.
Code of construction is ASME SEC VIII DIV 1.
As per my understanding ASME code specifies only minimum temeperature and time. it does not mentioned maxium limit.
Based on the above facts can the above tempering heat treatment can be accepted.
Thanks in advance for your valuable suggestions.
Regards
asad
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
No comments:
Post a Comment