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Regards,
Sujeet
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of B.Vaithiyanathan
Sent: Sunday, August 22, 2010 5:56 PM
To: materials-welding@googlegroups.com
Subject: Re: [MW:6625] ELECTRDOE STRENGHT REQUIRMNET FOR PLATE GR65
Always the welding electrode should meet Base material strength .By this way the electorde slection should be F7A0 .
Regards,
Vaithiyanathan,
On 8/22/10, Syed Moin <Syed.Moin@gerabgroup.com> wrote:
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
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With Best Regards
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