Effect of alloying elements on thermal shock resistance of gray cast iron

► Alloying of molybdenum, chromium, nickel and tin to the gray cast iron ingot was performed to identify optimum composition for the best thermal shock resistance. ► Mo was the most effective alloying element for the increase in thermal shock resistance. ► Thermal shock resistance was not affected by the addition of Ni as alloying element. ► The addition of Cr plus Mo in combination with Sn brought about the most significant improvement.