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

[beh188]

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.

 

[weldtek]

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

 

[beh188]

I have a 2007 version. What does 2010 say?

 

[weldtek]

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.