What Is A Number In Asme Section Ix

Ferrous metals which have specified impact test requirements have been assigned group numbers within p numbers.

What is a number in asme section ix.

Please note the asme code section ix is only a referencing code. These materials were also covered by the p number but not the converse. 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. Another type of grouping for filler metal or welding rod is the a number.

The asme works as an accreditation body and entitles independent third parties such as verification testing and. Applicable only to ferrous metals. Please watch the video given below for more clarity on this topic. The s number was removed from asme section ix in 2009.

The table qw 442 in asme code section ix provides the list of a number. That is determining it. The table qw 422 provides material p number and group numbers. It is the construction code such as asme section viii div 1 or b31 3 etc.

The document is written and maintained by volunteers chosen for their technical expertise. 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 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. Asme section ix specifies the requirements for the qualification of welders and the welding procedure specifications.

There is a common misunderstanding that if you follow asme code section ix requirements to qualify and describe. It refers to the deposited weld metal chemical composition. Section ix of the asme bpvc. The s number s purpose was identical to the p number.

To reduce the number of welding and brazing procedure qualifications required base metals have been assigned p numbers by the asme bpvc. Please note the a number in wps does not refer to the filler wire or electrode chemical composition. A change in the chemical composition of the weld deposit from. The a number is essential variable in most of welding process in asme code section ix.

What is asme section ix. A number grouping has been done on the basis of the chemical composition of the deposited weld metal. The asme code section ix is not determining of application of group numbers. 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. 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.