SA 182 Gr. F11 Low Alloy Steel Welding - Preheat & Post heat Inquiry

[Saravanan Sornam]

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

[Kannayeram Gnanapandithan]

what is pipe thicknees . if it is less than 16mm no pwht, but u have to do preheat, see ASME sec1 or B31.1

THANKS & BEST REGARDS

KG.PANDITHAN, AWS-CWI, CSWIP 3.1

CONSULTANT-WELDING & QUALITY

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[pgoswami]

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

pgos...@quickclic.net

pradip....@gmail.com

http://ca.linkedin.com/pub/pradip-goswami/5/985/299

 

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

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