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Related titles. Carousel Previous Carousel Next. Jump to Page. Search inside document. Base material — SA Gr It was deleted from ASME in The F Number: F number grouping for filler metals is done to reduce the number of welding procedure specifications WPS and welder performance qualifications.
The basis for F number grouping is usability characteristics. The usability characteristics fundamentally determine the ability of a welder to produce sound welds with a given filler metal. Also read: Thickness range for welder qualification. Also read: How to write a welding procedure specification. Er for alloy 20 has f 6 A 9 certified to weld with filler metal f 6 A 8. Wps and pqr for and base alloy 20 By company and first welder passed. Am I required to also get certified in alloy20 per asme section 9 because A number is different but f number is same?
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