I have a consultant for one of my customers that is refusing to allow me to use a welder that certified on P1 material unless I can prove to him that the A529 steel to be welded is not P2 material. I have been searching but can find nothing on on A529 other than that it is a high strength carbon manganese steel suitable for construction. I found http://www.weldingengineer.com/ASME%20P-Numbers.htm that shows P1 material to be carbon manganese steel and P2 not being used for anything. Can anyone provide me with a reference I to show this consultant so I can complete a 30 minute weld repair?
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