The base metal qualification range for welding performance
qualifications are stated by QW-350s tables (i.e., QW-353 for SMAW).
These tables lead you to article QW-403.18 which says: "A change from
one P-Number to any other P-Number or to a base metal not listed in
table QW/QB-422, except as permitted in QW-423, and in QW-420.2."
According to QW-423, "when a base metal shown in the left column is
used for welder qualification, the welder is qualified to weld all
combinations of base metals shown in the right column":
BAse metal for welder qualfication:
P Nº 1 to 15E or 34 and 41 to 49 (note that 2010 version has reasigned
5B.2 group material as 15E.1 and that S numbers have been reasined as
P numbers).
Qualfied Production Base Metals:
P Nº 1 to 15E or 34 and 41 to 49
Therefore, if the qualification test was performed for P1 to P1, the
qualification range will be P Nº 1-15E, 34, 41-49.
Regards.
Materials Science Ph.D: Pedro Alvarez
LORTEK - Joining Technologies Research Institute
Spain
On 7 ene, 08:43, sn vl <weldin...@gmail.com> wrote:
> Hi..
>
> How to find in ASME sec IX P no to Pno qualification range.
> Eg : If a welder qualified for P1to P1
> what is the Range qualified As per Sec IX.
> Where is given in CODE.
>
> Regards
> SN.
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