×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

4340 phase diagram

4340 phase diagram

4340 phase diagram

(OP)
Hi,
I'm doing heat treatments on a 4340 steel which is a nickel-chromium-molybdenum steel containing also manganese and carbon. Anyone knows which and how I can find the appropriate phase diagram for this low-alloy steel?
thank you!

RE: 4340 phase diagram

Are you looking for a TTT diagram (time-temperature-transformation) or a CCT (continuous cooling transformation) diagram, which relates the microstructures developed during thermal processing to the process temperature?  An example is shown in the link below:

http://www.msm.cam.ac.uk/phase-trans/2000/practicals/AP3/Image5.gif


If you just need the basics of liquidus temperature, etc. then the Fe-C phase diagram should be sufficient:

http://www.calphad.com/graphs/Metastable%20Fe-C%20Phase%20Diagram.gif

 

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources