Netra material being high strength material which we have tried with E11016 type elctrode and SAW wire which require to achieve impact at minus 40C and higher UTSatroom room temp (This material is similar to SA517 gr F or similar)
Welding of this material is critical from resulted properties point of view W
Welding parameters are to be estblished with batch testing in 3G position for electrodes with controlled bead length , current, volt to estblish heat input. and also preheating and post heating temp.Some time you may require to have ISR for restrain joint
generaly Kobelco or Thyssen make brand are good which we have used
Regards
Hegde P.B.
From: Dick Overkleeft <dick.overkleeft@gmail.com>
To: materials-welding@googlegroups.com
Sent: Sat, 30 October, 2010 11:21:47 PM
Subject: [MW:7950] NAXTRA M700 weldebility
We are going to use above material fro shipbuilding purpose. Thickness 30- 40 mm. We do not have experience with this specified material, I would like to know from your experience information on ;
Ceq and impactvalue in L and T direction.
In regard to the attached manufacturers information , the deviation in chemical composition may be rather high.
This may require preheating, which influences the weldebility. If you have any practical information, it will be appreciated.
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