ASME BPVC 2023 Section IX

MANDATORY APPENDIX J
GUIDELINE FOR REQUESTING P-NUMBER ASSIGNMENTS FOR
BASE METALS NOT LISTED IN TABLE QW/QB-422
ð23 J-100 INTRODUCTION
This Mandatory Appendix provides requirements to
Code users for submitting requests for P-Number assignments
to base metals not listed in Table QW/QB-422 or at
https://pnumbers.org. Such requests shall be limited to
base metals that are listed in ASME Code Section II,
Parts A or B; ASTM; or other recognized national or international
specifications. QW-420 should be referenced
before requesting a P-Number, to see if the base metal
can be considered a P-Number under existing rules.
For new materials, users shall reference the Submittal
of Technical Inquiries to the Boiler and Pressure
Vessel Committee in this Section and the Guideline on
the Approval of New Materials, under ASME Boiler and
Pressure Vessel Code in Section II, Part D. P-Number
assignment does not constitute approval of a base
metal for ASME Code construction. The applicable
Construction Code shall be consulted for base metals
that are acceptable for use.
J-200 REQUEST FORMAT
A request for a P-Number shall include the following:
a product application or use
b the material specification, grade, class, and type as
applicable
c the mechanical properties and chemical analysis requirements
d welding or brazing data, such as comparable PNumbers;
published welding or brazing data; welding
procedure specifications and procedure qualification
data; or brazing procedure specifications and procedure
qualification data
e properties of welded or brazed base metal joints, if
less than the minimum specified in the applicable specification
J-300 SUBMITTALS
Submittals to and responses from the Committee shall
meet the following:
a Submittal. Requests for P-Number assignments
shall be in English and preferably in the type-written
form. However, legible handwritten requests will also
be considered. They shall include the name, address, telephone
number, fax number, and e-mail address, if available,
of the requester and be mailed to The American
Society of Mechanical Engineers, Attn: Secretary, BPV
IX Committee, Two Park Avenue, New York, NY
100165990. As an alternative, requests may be
submitted via e-mail to secretaryBPV@asme.org.
b Response. The Secretary of the ASME BPV IX
Committee shall acknowledge receipt of each properly