S9074-AQ-GIB-010/248 Rev 1
Table 7-7. Welding Procedure Qualification Assembly Test Requirements - Continued
NOTES (continued): 21/
Use of the gas metal arc-short arc process for groove weld qualification of any material except S-8 shall require UT inspection of the test assembly in addition to all other tests and inspections. Where thickness is below that allowed by NAVSEA T9074-AS-GIB-010/271 for normal UT inspection and for S-8 materials, six transverse macro-etch specimens shall be substituted for UT inspection. 22/ In addition to the tests specified in this table, weld procedure qualification tests shall include a microsection of representative weld metal to be examined for ferrite content, which shall be in the range of 25-60%. This microsection shall be taken as close as practicable to the top centerline of the test weld. An additional transverse microsection shall also be examined for the presence of sigma phase in the weld metal and the base metal HAZ, the proportion of which is to be reported for information. These welds may be used for the qualification of magnetic or eddy current instruments which may then be used for the determination of production weld ferrite content. 23/ Qualification requirements shall be as approved by NAVSEA. 24/ For S-23 materials, root and face bends shall be employed. Four side bends may be substituted for root and face bends when base material thickness is greater than 3/8 inch. Wrap around guided bend testing shall be employed for all specimens and the mandrel radius shall be 6T maximum, where T is the thickness of the test specimen.
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