Red Seal Welding Practice Exam

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In ASME codes, what is used to identify weld metal composition?

F numbers
A numbers
P numbers
S numbers

The correct answer is: A numbers

In ASME codes, A numbers are used to identify the weld metal composition. This is based on the chemical composition of the weld metal, including elements such as carbon, manganese, and nickel. F numbers refer to the filler metal group for a specific welding process, P numbers refer to the base metal group being welded, and S numbers are used to identify welding consumables such as flux and electrodes. Therefore, A numbers are the most appropriate choice for identifying weld metal composition in ASME codes.