×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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

ASTM A358 Product Analysis

ASTM A358 Product Analysis

ASTM A358 Product Analysis

(OP)
Dear All,

I am confused the description about the Product Analysis in ASTM A358, the snapshot is below:




analysis shall be made by the manufacturer from the finished pipe of the plate and of the weld deposit.
Regarding this description, if only need to check the composition of the base material or both of base material and weld deposit?

As per the above snapshot, the result shall conform to the requirements of Section 7, which require the result need to comply with A240 or applicable AWS specification.

Acyually, we test the chemical analysis on the base material and weld deposit for S31254, result in that the result of weld deposit cannot meet the requirement of A240 or AWS applicable specification.

RE: ASTM A358 Product Analysis

Plate AND weld are required for each 500'.
What spec is the weld metal to? Isn't it matching alloy? If so it should meet the chem within the allowed product tolerances.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy

RE: ASTM A358 Product Analysis

(OP)
Dear EdStainless

Thanks your reply,

AWS A5.14 (N06625) for S31254 welded pipe

RE: ASTM A358 Product Analysis

What does your ASTM pipe spec say about using unmatched filler?
This usually raises other issues since you have raw filler chemistry but when welded there is dilution to be considered.

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy

RE: ASTM A358 Product Analysis

(OP)
Dear EdStainless,

Dilution is inevitable.

How to understand this sentence specified in Section 11 Product Analysis of ASTM A358.
"analysis shall be made by the manufacturer from the finished pipe of the plate and of the weld deposit."

And Section 11 requires that "The results of these analyses shall be reported to the purchaser or the purchaser’s representative, and shall conform to the requirements
of Section 7", Section 7 is the requirement for plate and filler metal.

So we are confused.

RE: ASTM A358 Product Analysis

I don't see why a small diameter drilled hole in the center-line of the weld wouldn't give you a true 625 chemistry.
You are right though, this is an interesting conflict. You could send a letter to the A01.01 committee and ask how this applies when the filler and base metal do not match (even though this is a combination that is listed in the spec).

= = = = = = = = = = = = = = = = = = = =
P.E. Metallurgy

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