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

Pipe & Fittings for Sour Service

Pipe & Fittings for Sour Service

Pipe & Fittings for Sour Service

ISO 15156 Para 7.1.2 allows "The steels described or listed in A.2 are considered resistant to SSC ..." and A.2.1.3 mentions forgings ASTM A105 and wrought fittings ASTM A234 WPB and WPC to be acceptable steel grade without SSC testings so long as hardness are met.

My questions would be as follow for sour service :
1) Are LTCS forgings such as A350 LF2 and LTCS wrought steel fittings A420 Gr WPL6 etc also considered SSC-resistant ?
2) For welding involving these type of fittings, are SSC testing required for welding qualification ?

RE: Pipe & Fittings for Sour Service

1) Yes if they meet the chemical composition, heat treatment, and hardness limitations of ISO 15156-2

2) No, unless
- the weld zone and parent material fail to meet the requirements of ISO 15156-2


The end user requires such testing

Steve Jones
Corrosion Management Consultant


All answers are personal opinions only and are in no way connected with any employer.

RE: Pipe & Fittings for Sour Service

Good answer SJones!


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