Is ASTM A252 Grade 3 in Group I Steels?

Date 10-03-2007 00:20

We have tested to A53 Gr.B which qualifies us to weld any group I material listed in table 3.1 of D1.1. We are currently welding pipe...A252 Gr. 3 material but cannot seem to locate the material in table 3.1 under any group. Does that mean we have to retest to weld A252 Gr. 3? A252 Gr. 3 should be equivalent to group I materials. Although, the copy of D1.1 I am referring to is an older copy. I am hoping it's included in the newer edition.

By MBSims

Date 10-03-2007 02:50

Sorry, A-252 Gr. 3 is not a prequalified base metal under D1.1-2006. You will have to run a procedure qualification for this specification and grade of material.

By swnorris (****)

Date 10-03-2007 14:30 Edited 10-03-2007 14:33

If the chemical composition of the A252 Grade 3 falls within the chemical composition range of a steel that is prequalified in D1.1, it can be used in a prequalified WPS, if approved by the EOR. Any preheat requirements would also be in accordance with the prequalified minimum preheat and interpass temperature. Just a thought.

By shaun420 (*)

Date 10-03-2007 16:20

Thanks for the quick replies! Appreciate it.

By MBSims

Date 10-04-2007 03:33

That's going to be the problem - I believe A252 has little or no controls on chemical composition.