×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

*
*
*
*

Thanks. We have received your request and will respond promptly.

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!
*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

SA-105 vs. SA-266 Cl. 2

thread292-16016

SA-105 vs. SA-266 Cl. 2

SA-105 vs. SA-266 Cl. 2

(OP)
What exactly is the difference between SA-105 and SA-266 Cl. 2 forgings? We are fabricating a replacement vessel that originally had SA-105 flanges, but the customer would like to use SA-266-2 instead.

RE: SA-105 vs. SA-266 Cl. 2

In my opinion, SA-266 Cl. 2 is not allowed by Section VIII Div. 1, see Section II.  B16.5 does not allow this material for flanges.

RE: SA-105 vs. SA-266 Cl. 2

Of course SA-266 Cl.2 is allowed under Section VIII Div.1.
The two materials are quite equivalent in my opinion: only minor differences in the specification (heat treatment policy for instance).
I think the choice is a matter of taste, or, better said, of continuity at client's organisation.


prex
motori@xcalcsREMOVE.com
http://www.xcalcs.com
Online tools for structural design

RE: SA-105 vs. SA-266 Cl. 2

The ASTM A266 class 2, is not allowed by ASME VIII div.1, infact if you look ASME IID, this material is underlined NP (not permitt.) under VIII div.1.

RE: SA-105 vs. SA-266 Cl. 2

The 2001 Edition of ASME Section II, Part D was revised such that SA-266-2 is permitted to a maximum temperature of 1000 deg F for Section VIII-1 construction.

RE: SA-105 vs. SA-266 Cl. 2

I remember these two grades as generally used for flanges and other applications like tube sheet etc.,  On the former, there is a max limit in weight of 10000 lbs (this is old, rusty recollection of mine, I am not sure what the current code says...)  Sorry if I have mislead anyone with this...

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! Already a Member? Login

Resources

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close