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

Forging terminology to ASTM A694

Forging terminology to ASTM A694

Forging terminology to ASTM A694

My understanding with regard to forgings to ASTM A694 is that the material must undergo significant work, usually reduction of 4 to 1. However I find that some companies certify to ASTM A694, material such as seamless pipe (API 5L X52) that has been hot worked to form fittings such as equal tees. Is it valid to certify this as a forging to ASTM A694?

RE: Forging terminology to ASTM A694

The correct reference is probably to flanges and other accessories, not necessarily to the seamless pipes.

ASTM A 694/A 694M  


RE: Forging terminology to ASTM A694

I reviewed ASTM A 694, and ASTM A788. I don't see why this could not be done. For your case, the manufacturer is starting out with a seamless pipe product, and is hot working it to the desired shape of an equal tee. The equal tees after forming would fall under a part, not piping, per ASTM A 694.

RE: Forging terminology to ASTM A694

Thank you for your replies but I remain in doubt as to the validity of this.Working with welding essential variables when commonly some clients in the offshore oil industry see the material grade as being necessary to re-qualify a WPS. Therefore, when  hot worked seamless pipe into Tees or Con. Reds takes the A860 or MSS WPHY grade then this would trigger another WPQ if the original WPS was qualified on say flange material A694 F65. What is the difference between WPHY 65 and A694 F65?

RE: Forging terminology to ASTM A694

WPHY 65, which falls under ASTM A 860 is a carbon, low alloy steel butt welded fitting specification, which lists various Grades like MPHY65. The ASTM A 694 specification is for flanges and forged fittings, which has a comparable Grade 65. For API 5L/ ASTM A  672, the comparable Grade of line pipe is X65.

What code or standard are you working under? Welding that is performed to ASME B31.4 will require a separate WPQR for material not listed. The API 5L Grades are listed, but the A 694 and A 860 material specifications are not listed. This is probably the reason why your clients need to qualify a separate WPS for these specifications.

RE: Forging terminology to ASTM A694

The need for the WPS is driven by the alloy, as defined in the code, not the ASTM spec #.  The same alloy from two different ASTM specs can be covered by the WPS.
Don't confuse spec and alloy grade with each other.

= = = = = = = = = = = = = = = = = = = =
Corrosion never sleeps, but it can be managed.

RE: Forging terminology to ASTM A694

In general various codes e.g. BS4515/DNV but more often than not a change in material grade as an essential variable for welding is client spec. driven. Given what you say regarding the tee manufactured from seamless pipe is it then valid to say that the tee is dual qualified in both A694 and A860 WPHY standards?

RE: Forging terminology to ASTM A694

No, you cannot make this general statement. The fabrication Code or Standard that you are working under provides the necessary requirements for material grouping and welding. If a client specification requires a separate WPQR because of a change in material grade and/or specification, so be it. The client can choose additional requirements above and beyond minimum code requirements.

Depending on application, such as impact testing, yes you can be required to qualify a weld procedure for similar grades of material under different material specifications.

RE: Forging terminology to ASTM A694

So I guess my all encompassing question is what determines whether a Tee or Con. Red.,which has been hot formed from seamless linepipe, is certified as either A694 F65 or say A860 or MSS SP-75 WPHY 65?

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


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