Please note that in ASME Sec. II C for 8018G the elements required the minimum values as mentioned in note G. So the properties of each batch of consumables are not guaranteed to meet the requirement. Please check the test certificates for 8018-G. It is better to select the consumables from8018 B series or C series (specially for Low temp. applications) as per your base material requirement.
(G) In order to meet the alloy requirements of the "G" group, the undiluted weld metal shall have the minimum of at least one of the elements listed in this table. Additional chemical requirements
may be agreed to between supplier and purchaser.
On Tue, Dec 20, 2011 at 10:57 AM, Vivek Pandey <vivek.pande06@gmail.com> wrote:
DEAR EXPERTS
AT this time Iam facing a critcal problem in impact test at minus 47
deg. I have a already existing qualified PQR WITH E 8018G & IMPACT
Tested at -47deg. I have used the same PQR in vessel production test
at -47deg but this PTC has failed in imapct test of WELD & HAZ at
-47deg we are getting erratic value 10, 12, 90 in weld & 60, 10, 50 in
HAZ
Kindly suggest your opanion about this problem as soon as possible
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Best Regards,
Nilesh Pathare
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