What's the difference between nodular cast iron and pig iron?What are the differences between these three items? What are they used for?
The difference between the carbon content, that is, the purity of pig iron difference
Pig iron is cast iron: carbon content is greater than 2.1%., white cast iron for steelmaking; gray cast iron for casting; ductile iron because of its graphite in spherical arrangement, so its strength, plasticity, toughness are good, can make mechanical parts
