Answer
Gray iron is comparatively weak and brittle in tension as a consequence of its microstructure; when an external tensile stress is applied on the tips, the graphite flakes may serve as points of stress concentration. Strength and ductility are much higher under compressive loads.
Work Step by Step
Gray iron is comparatively weak and brittle in tension as a consequence of its microstructure; when an external tensile stress is applied on the tips, the graphite flakes may serve as points of stress concentration. Strength and ductility are much higher under compressive loads.