[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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