P-No. / Group-No. 420 SS

[nozzlemon]

I have been looking for the P-number and Group number for 420 Stainless Steel rounds. I have looked in Section IX of the code book and have not had any luck locating a P-number or Group number. Does anyone know what these numbers are for 420SS?

-nozzlemon

 

[DVWE]

I don't believe 420 has an established P-No./Group No.

You could also check Section II Part D.

 

[nozzlemon]

Do you know how this would be called out in a weld procedure specification (WPS)?

-nozzlemon

 

[DVWE]

Per QW-424.1