×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

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!
  • Students Click Here

*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

Jobs

Change of A-No., new WPQ needed?

Change of A-No., new WPQ needed?

Change of A-No., new WPQ needed?

(OP)
Hello,

we have to weld a carbon steel (SA-333 Gr. 6 with P-No. 1) for low temperature piping acc. to B31.3 with a filler metal (A5.18:ER 70S-6) which has F-No. 6 and A-No. 1.
Usually we use A106 for "normal" temperatures with the same P-No. but with a filler metal with has A-No. 2. We do not have any WPS for this A-No. 1 and this is an essential variable for GTAW.

Is it sufficient to create new WPS or do we have to create also new PQR and WPQ? A-No. is no essential variable of PQR and WPQ for GTAW.

greets

RE: Change of A-No., new WPQ needed?

JanMi,

QW-404.5 (Applicable only to ferrous metals.) A
change in the chemical composition of the weld deposit
from one A‐Number to any other A‐Number in
Table QW-442. Qualification with A‐No. 1 shall qualify
for A‐No. 2 and vice versa.


Create a new WPS and you are good to go,
Regards,
DD

RE: Change of A-No., new WPQ needed?

(OP)
Wow, this helps a lot!

Many thanks!

Best regards,
Jan

RE: Change of A-No., new WPQ needed?

If impact testing is required, a change in filler metal classification is a supplementary essential variable. You will have to qualify the WPS with the ER70S-6 filler metal with impact testing.

RE: Change of A-No., new WPQ needed?

ER70S-6 does not meet A no. 1 requirements due to Mn content it may have.
You will have to use provisions of QW-404.5 and qualify WPS with this consumable.
Instead of A no. you can write the classification (ER70S-6) on WPS
QW-404.12 also applies when impact tests are required

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!


Resources