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[MW:7605] Welding of A312 Gr.TP321H

By Materials & Welding
Dear All,
 
I need your valuable advice on following.
 
I need to carry out the welding of A312 Gr. TP321 H ( GTAW process) with a WPS qualified for P8- P8 material. In the WPS it is mentioned that to use ER 347 H for welding A312 Gr.TP321 H.
 
In ASME, section II, there is no F no classification for ER 347 H ( other filler ER308 H & ER316 H are classified in 5.9)
 
The filler wire is supplied by ESAB and theire Material cert is showing only ER 347 ( SFA 5.9) with carbon % .04 ( As per section II ,Carbon % for ER 347 is max .08%)
 
Since there is difference in C %, do I need to requalify the WPS using  the above filler ( ER 347 with C % .04)?
 
Thanks and regards,
 
Arun

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