MIL-R-45774 Radiographic Inspection, Soundness Requirements For Fusion Welds In Aluminum And Magnesium Missile ComponentsThis specification covers the methods for defining soundness and freedom from defects of manual or automatic shielded inert gas arc welds in aluminum and magnesium as determined by radiographic inspection.

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MIL-R-45774A  (MI)

C3-1                ACCEPTABLE CLASS III

ONE OR BOTH SIDES OF WELD

C3-2        UNACCEPTABLE CLASS III ONE OR BOTH SIDES OF WELD

CONTINUOUS IMPERFECT FUSION AT WELD INTER- FACE-FAYING SURFACE JUNCTION OF BUTT WELDS WITH BACK UP STRIP

D1-1        FOREIGN INCLUSIONS  -  MORE DENSE SHOWS TYPICAL TUNGSTEN INCLUSIONS.  ISOLATED INCLUSIONS ACCEPTABLE IF NOT EXCEEDING T/2.  SCATTERED INCLUSIONS AS SHOWN ABOVE SHALL BE REGARDED AS A FORM OF SCATTERED POROSITY.

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