Gentleman,
SA234 WP22 is for 2.25Cr-1Mo steel
where as P91 is modified 9Cr-1Mo steel with additions of Nb and V which provides higher creep strength at applicable higher temperatures and which differentiates from P9 steel (9Cr-1M0).
See below snap shot
Thanks & Regards
J.Gerald Jayakumar
On Tuesday, 20 December, 2022 at 08:49:29 am IST, mithlesh kumar <mithleshmech47@gmail.com> wrote:
Sir please read WP22 instead of P91
On Monday, December 19, 2022 at 3:01:56 PM UTC+5:30 kannayeram gnanapandithan wrote:
P/T 91 is CrMov steelIt should have Vanadium and it is a precipitation hardening elements.THANKS & BEST REGARDS,KG.PANDITHAN, BE, IWE, CSWIP 3.1,ISO 9712 Level 2 in VT,ASNT-Level II in PT,MT,RT & UT,LA ISO 9001-2015,International Welding Engineer.CONSULTANT-WELDING & QUALITYMobile no: +919940739349On Mon, Dec 19, 2022 at 8:43 AM Vishwas Keskar Welding Manager WELDING <vvkes...@gmail.com> wrote:What is the % Vanadium in that MTC ?It is trace elements not a deliberate addition for Gr 22 unlike Gr 91 where it it MUST in Gr 91RegardsVishwas IWEInternational Welding EngineerOn Saturday, December 17, 2022 at 8:47:13 PM UTC+5:30 mithlesh kumar wrote:Kindly read WP22 instead of P91On Saturday, December 17, 2022 at 8:15:23 PM UTC+5:30 mithlesh kumar wrote:Dear team,I have observed vanadium in heat analysis of p91 MTC , but as per code vanadium is not showing in chemical composition table. Suggest is it acceptable or not if acceptable code reference please.--You received this message because you are subscribed to the Google Groups "Materials & Welding" group.
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