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ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

(OP)
I have a WPS procedure and the PQR was done using P to S material.  What does this combination qualify?  Does it qualify P to P material specifically?

The code only discusses what P to P qualifies and what S to S qualifies, but not a P to S combination.


Thanks.

RE: ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

beh188,
You must not be working with the latest Code Ed.

RE: ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

(OP)
I have a 2007 version.  What does 2010 say?

RE: ASME IX WPS Qualification - Does qualifying P to S qualify P to P?

S numbers were eliminated in the 2009 addenda.  Most materials formerly assigned S numbers are now assigned P numbers, most, because in a few cases, former S number materials were deleted.
In some cases former S number materials were assigned a different P number.  If you have an existing procedure qualified using Sx which is now Sy, you can still use these procedures within certain limitations.  It's important to note that materials must have a specified minimum tensile strength to be used for procedure qualification.  I highly recommend you spring for a current edition of Sec IX and carefully review QW 420.
 

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