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

D1.2 Maximum weave width GTAW

D1.2 Maximum weave width GTAW

D1.2 Maximum weave width GTAW

Hey everybody,
Welding a bunch of 1/2" fillet welds on aluminum, using ER4043.
The welders are putting in a root pass, one cover pass and then waving the cap or cover pass to complete.
They are using 3/16" tig wire and up to 1/4" tungsten.

Does anyone know the maximum weave width for AWS D1.2 using the GTAW process on a fillet weld.
The WPS says stringer or weave, I can't find anything in D1.2 2014 that limits weave width. I know the
old rule of thumb width of the cup but can we prove this in code.

RE: D1.2 Maximum weave width GTAW

Since AWS D1.2 does not include prequalified welding procedures, one must qualify the WPS. Many heat treatable aluminum alloys and some of the nonheat treatable alloys are time at temperature sensitive. In short, one must limit the heat input and interpass temperature to minimize the width of the HAZ and the degradation of the mechanical properties.

If my memory serves me, D1.2 requires the contractor to qualify fillet welds separately from groove welds. The testing regiment for fillet welds isn't all that difficult, but there is a bone in the soup. The code also requires the mechanical properties be verified by welding a grooved joint. If the interpass temperatures are not controlled, the tensile test results will not pass muster.

The production WPS should include restriction on the heat input and interpass temperatures based on the welding parameters used to weld a test plate that produced acceptable results (as recorded in the PQR).

The bottom line is, "What did they do to qualify the WPS?" If the information wasn't recorded, maybe additional testing is in order.

The code specifies the minimum requirements that must be met. The contractor has a responsibility to take any necessary additional steps needed to ensure their product will perform as expected.

In this case, if the alloy is 6061-T6, I can assure you the mechanical properties of the weld are not met if the welders are using high heat input and maintaining high interpass temperatures.

Best regards - Al

RE: D1.2 Maximum weave width GTAW

As usual Al - very informative response.

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