Preheat Determining by TTT diagram

[siamak]

Hi Friends
I will be appreciate if anyone can help me on determining preheat temperature by
using TTT diagram and if it is possible with one applicable example on industrial material for example on ASTM A333 or A105

Thank you for your consideration.

[netspyking]

Dear Siamak ,

It is better to use carbon equivalent formula to calculate preheat , check these links :

[link Point to another website Only the registered members can access]

[link Point to another website Only the registered members can access]
Good luck

[siamak]

Dear netspyking

I appreciate your approach, it's practical. I should say that my mind was deflected
by much theoritical issues and your hint was great.
Thanks