Gr11 to Gr91 being discimilar joint
PWHT temperature of 745C is high for Gr11 material and you may land up with not meeting the Physical properties . Using equivalent consumables for Gr 11 material (B2 Type) you may require to reduce the PWHT temp to 700C and accordingly qualify the PQR
Regards
Hegde P.B.
09714714803
From: siva chidambaram <mechsivachidambaram@gmail.com>
To: materials-welding@googlegroups.com
Sent: Tue, 9 November, 2010 10:32:52 PM
Subject: [MW:8171] Welding of Gr.11 material with Gr. 91 material.
Dear all,
I have a doubt in welding of Gr.11 material with Gr. 91 material.
The details are as follow:
Joint Type: Fillet weld
Material; SA 213 Gr. T91 with SA 213 Gr. T11
Process: GTAW & Also in SMAW
Consumable: For GTAW: ER 80S-B2 & for SMAW : E8018-B2
Preheating: 200°C
PWHT: 745° ± 15°C
In this welding, Whether there will be any metallurgical problem. If so what is the alternate for it.
M.Sivachidambaram
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