The quantity of adjustment for base metal clasps on RPDs is limited by which mechanical property?

ELONGATION (ductility) is the property that LIMITS how much a metal clasp can be adjusted/bent before fracturing. Elongation measures the percentage of plastic deformation a material can undergo before failure. Base metal alloys (CoCr) have LOW elongation compared to gold alloys — this limits how much you can bend/adjust the clasp arm before it fractures or work-hardens and cracks. Adjusting a clasp repeatedly beyond its elongation limit causes fracture. E (Elongation) is the limiting property. E is correct.