Products

Cast Iron Castings:

the term cast iron covers a wide range of iron carbon silicon alloys containing from 2.0 to 4.0 percent carbon and from 0.5 to 3.0 percent silicon. the alloy typically also contains varying percentages of manganese, sulfur, and phosphorus along with other alloying elements such as chromium, molybdenum, copper and titanium. For a type and grade of cast iron, those elements are specifically and closely controlled. Cast iron is classified in to fire basic types: each type is generally based on graphite morphology as following:

• Gray Iron
• Ductile Iron
• Malleable Iron
• Compacted Graphite Iron
• White Iron

Even though chemistry is important to achieve the type of cast iron, the molten metal processing and colling rates play major roles in developing each type. Different mechanical properties are generally associated with each of the five basic types of cast iron.

Following illustrates the range of carbon and carbon and silicon for each type.

Silicon Content

The chemistry for a specific grade within each type is usually up to the foundry producing the casting. There are situations where the chemistry for particular elements is specified by ASTM, SAE, and others; this should be always be fully understood prior to procuring the casting.