E9018-B9 and E9016-B9 generally used for tubes or thin pipe welding without root run of GTAW.
Creep rupture data really makes the difference in addition to Mn+Ni %.
I think only 9015-B9 have the creep rupture data. You can use Thermanit Chromo 9V of Bohler Germany make.
Regards
Sent from BlackBerry® on Airtel
-----Original Message-----
From: JOSE SEBASTIAN <joseseban@gmail.com>
Sender: materials-welding@googlegroups.com
Date: Wed, 7 Sep 2011 00:41:27
To: Materials & Welding<materials-welding@googlegroups.com>
Reply-To: materials-welding@googlegroups.com
Subject: [MW:12354] SMAW ELECTRODE FOR P91 MATERIAL
Dear Group Members,
I am having 3 approved WPSs for P91 material.These 3 WPS are using 3
different electrodes.
1)9018-B9 -Iron powder & Low hydrogen potassium coated
2)9016-B9 -Low hydrogen potassium flux coated
3)9015-B9 - Low hydrogen sodium flux coated
My doubts are
1)How we can justify which electrode is better for my use?
2)Any where in code it mentioned the suitable flux coating for
electrode?
Regards
Jose Sebastian
+919687660525
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