[MW:1607] Re: Dissimilar Welding combination of T12#T23

Please find the attachment and consider this a an uncontrolled copy and sholud be used for reference only.

 

Regards

 

 

On 2/20/09, Bathula Raghuram (Mumbai - PIPING) <R.Bathula@ticb.com> wrote:

I don't know what design code your are using?

 Assuming it is ASME Sec 1 the post weld heat treatment shall be that specified for the material requiring the higher post weld temperature. When nonpressure parts are welded to pressure parts, the post weld heat treatment temperature of the pressure part shall control {refer PW 39.2}

 

T23 is not yet listed material in ASME BPV and approved thro' CC2199-3, you must refer to all the requirements of this code case.

 Since it is new material you should consult your consumable supplier.

 

Bohler's recent catalogue for HT/creep resistance steel has listed consumables for P/T23 (like Fox P23 for SMAW, and P23-IG for GTAW), it is better to consult you local supplier for this combination. Fox DCMS Kb may also be considered for this combination depending on your service requirements.

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From: Pressure_Vessel@yahoogroups.com [mailto:Pressure_Vessel@yahoogroups.com] On Behalf Of pankaj zala
Sent: Friday, February 20, 2009 8:44 AM
To: pressure part
Subject: [Pressure Vessel] S R REQUIREMENT

 

Respected  Sir,    I want to know about while welding higher grade material to lower grade material which welding rod shoud be used higher or lower.  and also which material preheating temprature take for preheating.               e.g.        welding of   T12 with  T23                                  Thanks. Regards, PANKAJ S.ZALA (MECHANICAL ENGINEER)

 

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