[MW:3487] RE: 3479] S-Number

S numbers were materials approved by B31 committees but did not have allowables in Sc. II and were not approved for use in Sc I or Sc VIII construction.  Often used for construction of hangers and hanger assemblies for piping that was governed by B31 but not in pressure boundary use.

 

John

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From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PREM SHANKARDUTT NAUTIYAL
Sent: Sunday, October 11, 2009 1:00 AM
To: materials-welding@googlegroups.com
Subject: [MW:3479] S-Number

Hi Friends

As per ASME Sec.IX, QW420, materials are grouped and assigned P-Numbers i.e. Parent material number.

Similarly i would like to know what is meant by S-Number with full form and detailed explanation !!!


Regards

Prem Nautiyal

PREM S NAUTIYAL
CELL : 9820313278
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