[MW:13380] RE: 13373] Failure Of Root bend test of Welding (CS to SS)

Hi

 

The possibilities could be a weld defect present in the weld metal at root side. Did you check visual and RT. However the type and location of failure is not stated in your query.

 

I wonder for the selection of Filler wire selected for this combination. Usually ER 309L Mo-16/17 is used for this combination. Any background available for this?

BR

M.Vijayan

 

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of HAREESH K V
Sent: Saturday, December 31, 2011 8:05 AM
To: materials-welding@googlegroups.com
Subject: [MW:13373] Failure Of Root bend test of Welding (CS to SS)

 

Dear Sir,

 

Advance happy new year to all.

 

I have done a PQR(As per ASME Sec ix) of 6", Sa106 GrB to Sa 312 TP 316L. One of the root bend of the same failed.

 

Consumable used: ErNiCr-3. 

 

Tesile strength T1=507 and T2=514MPa(Min Rqd 415MPa);

 

Hardness:

Sa106 Gr B side p.metal: 160,151,147

Sa106 Gr B side HAZ:160,156,156

Weld: 193,170,165

Sa312 TP316L P.metal: 175, 175,181

Sa312 TP316L HAZ: 165,151,151

Face bends are satisfactory.

 

One root bend satisfactory.

 

Please give me the possible reasons and the precautions on further doing the PQR.

 

Regards,

 

Hareesh K V

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