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[MW:22124] RE: 22122] SA 182 Gr. F11 Low Alloy Steel Welding - Preheat & Post heat Inquiry

By Materials & Welding
Hi Saravanan,
 
ASME Sec-IX is not the design code,it's only for welding qualification. The PWHT criteria should be as per the design code. For piping codes e.g B-31.1 , 8mm Thk may, P4 material would not call for PWHT. However for B-31.3 PWHT may be mandatory as per processrequirements and clients' specifications if any.
 
Appreciate if you specify those requirements in your query.
 
Thanks
 
Pradip Goswami, P.Eng,IWE
Welding & Metallurgical Specialist
Ontario, Canada
pgoswami@quickclic.net
pradip.goswami@gmail.com
http://ca.linkedin.com/pub/pradip-goswami/5/985/299
 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Saravanan Sornam
Sent: Thursday, October 16, 2014 4:02 AM
To: materials-welding@googlegroups.com
Subject: [MW:22122] SA 182 Gr. F11 Low Alloy Steel Welding - Preheat & Post heat Inquiry

Dear Welding Experts,

I need your advice to weld SA 182 Gr. F11, P No. 4 Gr. 1 as per ASME-IX,  Pipe to Cap Joint of 2 " , 8mm Thk., Single V Groove weld 

using SFA 5.28 , ER80S-B2 GTAW Filler, trade name T-80SB2, Kiswel, a Korean manufacturer.

1) As we do not have Client Spec for welding, I have checked in ASME- II C, Table-7, under
    Class ER80S-B2,  the Min. preheat is 135 Deg C and Max InterPass is 165 Deg C. this is 
    just a recommendation only right ? 

2) On the same table 7, under Notes C, it states, Prior to PWHT, can I follow the same
    statement in Notes C and send the material even after 1 day for PWHT after welding, 
    by proper post heat given in Notes C.
   
Because the PWHT location is quite far from our workshop.

) is there any chance of crack, if preheat comes below 135 Deg C, during welding ?

If you have any spec to weld this material, please share with me .

Regards,
Saravanan,
Korea

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