What Is A Number In Asme Section Ix

The s number s purpose was identical to the p number.

What is a number in asme section ix.

It refers to the deposited weld metal chemical composition. Please note the a number in wps does not refer to the filler wire or electrode chemical composition. The asme boiler pressure vessel code bpvc is an american society of mechanical engineers asme standard that regulates the design and construction of boilers and pressure vessels. There is a common misunderstanding that if you follow asme code section ix requirements to qualify and describe.

It is a reference code that helps for bpvc construction codes for qualifications of welder or welding operator brazer or brazing operator and fuser or fusing operator. Applicable only to ferrous metals. This can be found in asme bpvc section ix table qw 442. The table qw 422 provides material p number and group numbers.

Asme section ix specifies the requirements for the qualification of welders and the welding procedure specifications. In most of welding process the p number f number a number pwht thickness out of specified range are essential variable. Another type of grouping for filler metal or welding rod is the a number. A number grouping has been done on the basis of the chemical composition of the deposited weld metal.

The table qw 442 in asme code section ix provides the list of a number. Based on requirements of asme code section ix all essential variable nonessential variable and supplementary essential variable such as group number must be indicated in the welding procedure specification. The document is written and maintained by volunteers chosen for their technical expertise. Ferrous metals which have specified impact test requirements have been assigned group numbers within p numbers.

Asme section ix code is set of rules guidelines and requirements for welding brazing and fusing qualifications. The s number was removed from asme section ix in 2009. Please watch the video given below for more clarity on this topic. The asme code is the american society of mechanical engineers asme standard that regulates the design development and construction of boilers and pressure vessels.

However these numbers were assigned to those materials included for pipework to the asme b31 code for pressure piping. It is the construction code such as asme section viii div 1 or b31 3 etc. These materials were also covered by the p number but not the converse. Section ix of the asme bpvc.

The a number is essential variable in most of welding process in asme code section ix. What is asme section ix. To reduce the number of welding and brazing procedure qualifications required base metals have been assigned p numbers by the asme bpvc. The asme works as an accreditation body and entitles independent third parties such as verification testing and.

That is determining it. The asme code section ix is not determining of application of group numbers.