[MW:6619] ELECTRDOE STRENGHT REQUIRMNET FOR PLATE GR65

Dear Members,

Appreciate if you could provide me some information on the issue, During a PQR, manufacturer has used electrode F6A0-EM12 to weld plates A516 Gr. 65, welding procedure is SAW. Below is the comparison, between the tensile strength of the electrode,

comparison table                               
        WELDING FLUX F6A0       PLATE   flux certificate(see attachment)        Strength of the plate material 
        REFER TO SFA 5.17       ASTM A516, GR65 test result     Test Result    
        Tensile Tensile tensile         tensile
        60,000~80,000 psi       65000~85,000 psi         72289 psi (500MPa)     68875 psi (475 Mpa)    
                                       
Our client says that the selected electrode is not suitable for Gr. 65c plates. Is it correct?

They say that the electrode shall be selected considering the minimum strength ( for this electrode minimum strength is 60, 000 PSI), and therefore it is not suitable for a plate with minimum strength value equal to 65000 PSI .

As you can see in the above  table tensile test value for the electrode is 72289 PSI, but still the client is not ready to accept the use of this electrode.

Please advise.

Regardsa

MS

______________________________________________________
CONFIDENTIALITY NOTICE: This electronic mail transmission may contain information that is confidential, privileged, proprietary, or otherwise legally exempt from disclosure and is intended only for the use of the recipient named above. We do not waive confidentiality in the event this mail was transmitted wrongly. If you have received this communication in error, and are not the intended recipient, you are hereby notified that you are prohibited from reading, printing, copying, or disseminating this message, any part of it, or any of the attachments it may carry. If you have received this message in error, please destroy all electronic and paper copies and notify the sender immediately of the inadvertent transmission. We would like to advise you that we would not waive any of our privilege for taking action against you in the event the confidentiality of this message has been compromised. Thank you for your cooperation
________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email
______________________________________________________________________