what is eutectic cast iron
Cast iron is a group of iron-carbon alloys with a carbon content greater than 2%. The alloy constituents affect its colour when fractured: white cast iron has carbide impurities which allow cracks to pass straight through.Grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks.Carbon (C) and silicon (Si) are the main alloying elements, with the amount ranging from 2.1â4 wt% and 1â3 wt%, respectively.he alloy constituents affect its colour when fractured: white cast iron has carbide impurities which allow cracks to pass straight through. Grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the material breaks.