Not logged inAmerican Welding Society Forum
Forum AWS Website Help Search Login
Up Topic Welding Industry / Inspection & Qualification / A5.29 vs A5.36
- - By dabel Date 09-17-2019 19:20
I am getting ready to do some qualification testing and I have a question regarding the AWS specification of these two wires.
Lincoln Ultracore 81Ni1A75-H is listed as AWS A5.29 (classification E81T1-Ni1M-JH4) while Lincoln Ultracore 360 M81 (copper coated FCAW wire) is listed as AWS A5.36 (classification E81T1-M21A8-Ni1-H4).  I am familiar with A5.29 but I’m unsure of how the two specifications relate.
AWS states that “A5.36 combines A5.20 and A5.29 into a new open classification system” allowing the introduction of new products to meet the demands of today’s market. Basically, it seems to allow for more detailed classifications.
AWS B2.1, Specification for Welding Procedure and Performance Qualification, lists a change of specification or classification as a qualification variable for CVN applications.
I have noticed that some wires we use lists both specifications.
So my question is will qualification of A5.36 allow for the use of A5.29 and vice versa?
With the AWS statement that A5.36 “combines A5.20 and A5.29” I would think that the two are interchangeable but I would like your professional opinions on the matter before I begin any testing.
Parent - - By 803056 (*****) Date 09-17-2019 20:02
As you read, A5.20 and A5.29 were combined starting in 2015 if I remember correctly. There was a transition period of three years after which A5.20 and A5.29 would evaporate into the ether. However, codes being what they are, continue on until they are no longer referenced by engineers and owners. It could be 3, 6, or 26 years before project specifications mo longer reference A5.20 or A5.29.

I remember reading a project specification for a new structure several years ago that referenced a structural code first published in 1928, Code for Fusion Welding and Cutting in Building Construction that was replaced with AWS D1.0 in 1941. It also included a statement that all welds shall meet first class workmanship in accordance with AWS. Talk about simple copying a boiler plate from on specification to another.

The bottom line is new WPSs and PQRs developed in accordance with AWS D1.1:2020 should reference the current filler metal specifications, but that doesn't mean you won't see them referenced anymore. I say AWS D1.1:2020 in anticipation that it will not longer reference A5.20 or A5.29. That could be a long shot.

Parent - By 803056 (*****) Date 09-19-2019 17:47
I should have added that D1.1 provides a fairly good comparison between the FCAW filler metal specifications as an Annex.

Up Topic Welding Industry / Inspection & Qualification / A5.29 vs A5.36

Powered by mwForum 2.29.2 © 1999-2013 Markus Wichitill