S9074-AQ-GIB-010/248 Rev 1
NOTES (continued): 3. A total of three macro-etch specimens for cladding and hardfacing, and three bend specimens for cladding, shall be tested. For 5G and 6G welds, specimens shall be taken from the approximate 3, 6, and 9 o’clock locations. For 1G and 2G welds, the center test location shall be separated by approximately 90 to 120 degrees from the surrounding locations. 4. Diameter (D) shall be as follows: (a) For production welding diameters 5 inches OD and less, D shall be the smallest to be welded in production except that diameters smaller than are practical for obtaining specified test specimens (including by multiple test assemblies) or for necessary qualified thickness are not required; diameters qualified shall be D and greater, except where note 4(b)(i) applies. (b) For welding minimum diameters greater than 5 inches OD, any diameter over 5 inches may be tested and qualified diameters shall be all greater than 5 inches OD. (i) In addition, for cladding in the 5G or 6G positions where products greater than 5 inches OD are to be welded in production, and where conditions of figure 7-4, note 5(a) or 5(b) apply, base material tested shall be greater than 5 inches OD; testing shall be per this figure and a second composition test at the minimum qualified clad thickness shall also be performed at the 6 o’clock position; qualification on a minimu m OD (i.e., 5 inches or less) and on an OD greater than 5 inches shall qualify all ODs greater than the minimum OD tested. 5. For cladding only, where dilution evaluation is performed in lieu of composition testing (see figure 7-4, notes 5 and 7), depositing an additional 2-inch minimum extension of the first cladding layer is required. This cladding can be an extension of the first layer from the main overlay weld, or it can be deposited on a separate location beyond the main weld if welded along with the first layer of the main weld.
Figure 7-5. Test Assembly for Procedure Qualification of Hardfacing and Cladding for Circumferential Welding of Cylindrical Materials (for Propulsion Shafting, see MIL-STD-2191) - Continued
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