Application‑based segmentation, a core element of X‑Ray Flaw Detector segmentation, categorizes demand across four principal industries: aerospace, automotive, electronics, and energy. The aerospace segment commands the largest share (approximately 35%) due to stringent certification requirements and the high value of components where flaw detection is non‑negotiable. Automotive follows with 30%, driven by increasing adoption of lightweight alloys and the need for defect‑free parts in electric‑vehicle production. Electronics accounts for 20% of the market, reflecting the proliferation of high‑density printed circuit boards and semiconductor wafers that require sub‑micron defect identification. The energy sector, encompassing nuclear, oil‑gas, and renewable installations, contributes the remaining 15%, where inspection of welds and pressure vessels is critical for operational safety. These application proportions shape the overall market size, guiding manufacturers toward sector‑specific product development and informing investors about growth hotspots.