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EN-GJS-450 | 5.3107 modified nodular graphite cast iron

Numeric designation5.3107
Chemical designationEN-GJS-450
Statemodified nodular graphite cast iron
Etching3 % Nital

The micrographs show a GJS with a purely ferritic matrix. It was modified to 17 % elongation at fracture (instead of the usual A = 10%).

This is probably a solid solution variety.