S9074-AQ-GIB-010/248 Rev 1
NOTES (continued): 6. Machine the weld material down to the minimum machined weld thickness to be allowed for production and perform hardness testing near the end macro-etch specimen location as follows: (a) Hardness testing shall require a minimum of five random readings, which shall be averaged. (b) Hardness results shall be as specified in the applicable military specification (filler metal, component, etc.), commercial specification, manufacturer’s data sheet, or footnote 6 to table 7-2, as applicable. (c) Testing shall conform to AWS B4.0 utilizing the test method corresponding to the hardness value specified by the applicable specification of note 6(b), or as otherwise approved. Any distortion in the test assembly shall not increase the machined weld thickness for this test. The thickness shown is the minimum machined production weld thickness qualified. Report this thickness, the number of weld layers at this thickness, and hardness results along with other qualification test data. If necessary, etching shall be employed to discern the weld layer from which hardness is obtained.
Figure 7-6. Procedure Qualification Test Plate for Hardfacing (Also, See Figure 7-5 for Cylindrical Materials) - Continued
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