State the chemical composition of SG iron grades?

Question

Accepted Answer

SG iron grades are a type of cast iron with a specific chemical composition.

SG iron, also known as ductile iron or nodular iron, is primarily composed of iron, carbon, silicon, and small amounts of other elements.
The carbon content in SG iron grades is typically between 3.2% and 3.6%.
Silicon content ranges from 1.8% to 2.8%.
Other elements present in smaller quantities include manganese, phosphorus, sulfur, and trace amounts of magnesium and copper.
The specific chemical composition may vary depending on the grade of SG iron and its intended application.