×
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

Using Fig. UCS-66 for SA-333 Gr. 3
3

Using Fig. UCS-66 for SA-333 Gr. 3

Using Fig. UCS-66 for SA-333 Gr. 3

(OP)
I am trying to use Fig UCS-66 for a nozzle neck constructed of SA-333 Gr.3 material. The shell of the vessel is constructed of SA-203 Gr. E material.

In the notes section, SA-333 material is not assigned to any curve. I assume that it would have the same requirements as the SA-203 Gr. E since they are both 3.5% Ni material.

Am I missing something? How do I apply Fig. UCS-66 for SA-333?

RE: Using Fig. UCS-66 for SA-333 Gr. 3

Curve B applies to SA-333. Read Note (2)(c) in Fig. UCS-66.

RE: Using Fig. UCS-66 for SA-333 Gr. 3

(OP)
Thanks for the reply doct9960. I agree with you that it goes on curve B.

The reason that I asked my question is that it does not make sense to me that this material should be on curve B. I just wanted to see if I was missing something. It is equivalent to SA-203 material except that it is pipe instead of plate. Also, the B31.3 piping code exempts it from impact ot -155F.

This nozzle is on a vessel that has an MDMT of -106F. I am working on a procedure to replace a corroded nozzle, and I will just have to purchase impact tested material.  

RE: Using Fig. UCS-66 for SA-333 Gr. 3

2
SA 333 Gr 3 is impact tested (at -150 F) material. It is exempted from impact test for Div 1 construction. It is not covered by Fig UCS-66. It is covered by Para. UCS-66(g).  

RE: Using Fig. UCS-66 for SA-333 Gr. 3

james has hit the nail on the head with para. UCS-66(g).  

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