What Is A Number In Asme Section Ix

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.

What is a number in asme section ix.

The asme works as an accreditation body and entitles independent third parties such as verification testing and. These materials were also covered by the p number but not the converse. In most of welding process the p number f number a number pwht thickness out of specified range are essential variable. The table qw 422 provides material p number and group numbers.

It refers to the deposited weld metal 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. 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.

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 table qw 442 in asme code section ix provides the list of a number. The s number s purpose was identical to the p number. The asme code section ix is not determining of application of group numbers.

A change in the chemical composition of the weld deposit from. Please watch the video given below for more clarity on this topic. Asme section ix code is set of rules guidelines and requirements for welding brazing and fusing qualifications. Section ix of the asme bpvc.

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. A number grouping has been done on the basis of the chemical composition of the deposited weld metal. The a number is essential variable in most of welding process in asme code section ix.

The s number was removed from asme section ix in 2009. That is determining it. Please note the a number in wps does not refer to the filler wire or electrode chemical composition. The document is written and maintained by volunteers chosen for their technical expertise.

Another type of grouping for filler metal or welding rod is the a number. The a number is a calculated value based on a combination of the chemical composition of the weld filler metal which may be found in asme section ii part c and asme section ix s a number table qw 442. The asme code is the american society of mechanical engineers asme standard that regulates the design development and construction of boilers and pressure vessels. Asme section ix specifies the requirements for the qualification of welders and the welding procedure specifications.

Applicable only to ferrous metals. There is a common misunderstanding that if you follow asme code section ix requirements to qualify and describe.