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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