×
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

Cl-SCC Inter or Trangular?

Cl-SCC Inter or Trangular?

Cl-SCC Inter or Trangular?

(OP)
API 571 describes Chloride Stress Corrosion Cracking as being Interganular whereas most sources indicate it is Transgranular.

Which is true or do both types occur in real life?

Ron Frend
http://www.predicon.net

RE: Cl-SCC Inter or Trangular?

My copy of 571, subclause 4.5.1.5, item d) states:

Quote:

Metallography of cracked samples typically shows branched transgranular cracks.  Sometimes intergranular cracking of sensitised 300 Series SS may also be seen

It shows that both types can occur in real life with factors such as microstructure, stress and corrodent serving to drive whether initiation is from pitting or from intergranular corrosion and whether cracking propagates through a transgranular, intergranular, or even a mixed mode.

Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
 

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