A514 "T1" in AWS D1.1

Date 01-17-2015 01:43

Ok, for my first real question I have been pondering this one for a while. In the D1.1 code book, A514 is repeatedly mentioned through out but it is not mentioned in Table 3.1 Prequalified Base Metal nor Table 3.2 Prequalified Minimum Preheat and Interass Temperature and exceeds the limitations found in 1.1.1 Limitations "(1) Steels with a minimum specified yield strength greater than 100 ksi". For example, 5.8.3 Steels Not Recommended for PWHT. A514 is mentioned. Also 6.11 Nondestructive Testing lists the acceptible criteria for A514.

So the question I have is, why? Is it mentined for the knowledge of the matter? Can A514 qualify under D1.1? I know anything that meets the criteria for D1.1 can be tested and used. We weld "T1" on occasion and the question came up of what code does that fall under? For a note, we technically do not weld to a code as we are a R&D facility for ourselves but we are certified to D1.1 and ASME IV in various forms.
-Jonathan

By 803056

Date 01-17-2015 02:11

So, it's not prequalified, but it can be qualified under clause 4. Look at Table 4.9.

Al

By Superiorwelding (*)

Date 01-17-2015 02:40

Al,
Thanks for the reply. I do understand that it can be qualified but Table 4.9 says nothing about type of material which would allow me to qualify A514. Forgive my ignorance but that does not answer the question of the strength requirements of D1.1 and how A514 exceeds the 100 ksi max, I believe. And that would bring me to another question, do the high strength steels, exceeding 100 ksi, get guided bend tests as well?
-Jonathan

By 803056

Date 01-17-2015 04:46

Yes, but the bend diameter is larger to accommodate the lower elongation. See Figure 4.15. You have to read Table 4.9 carefully. It defines what the WPS is qualified for based on what material group was used for qualification.

It isn't easy, but the information is in there if you know where to look. Knowing where to look is the secret.

Al

By ssbn727 (*****)

Date 01-17-2015 05:25

Well, Now you're the one who can take a picture, or take some notes Jonathan. :eek:

"Weldcome" to the AWS Welding Forum again Superiorwelding. :twisted:

Respectfully,
Henry

By Superiorwelding (*)

Date 01-18-2015 03:38

Well, now I know why I couldn't find A514 in Table 4.9. I have the 2000 edition of D1.1 and A514 is not listed there. Oops, now I know :smile:

Thanks for the help on this one. On to the next question.

Henry,
Ha, it took me a second to figure out what in the world you were talkng about :lol:

Thanks for the welcome again.
-Jonathan

By 803056

Date 01-18-2015 04:23

My bad. I should have said AWS D1.1:2010.

Sorry.

Al

By SCOTTN

Date 01-20-2015 11:46

Can A514 qualify under D1.1?

In addition to what's already been said, here's a link to an AWS interpretation with regard to qualifying a WPS using A514

http://www.aws.org/technical/interps/D1.1-06-I03.pdf

By Kix

Date 01-27-2015 21:36

We were able to get A514-T1 to pass procedural nondestructive and destructive testing with 90ksi filler wire. It can be qualified to D1.1 fairly easily. 4.8.3(2010) speaks to how other material not listed in D1.1 can be qualified. Also keep an eye out that D1.1(2010) 6.11 requires any NDT to be performed on A514 materials must be 48hours after the last arc has been struck on the weldment. It's in the older specifications as well. I see this missed a lot. :wink:

Kix

By Superiorwelding (*)

Date 01-29-2015 04:37

Kix,
Thank you very much for your reply! I look forward to qualifying our A514.
-Jonathan