What are the different grades of cast iron?

The 4 Types of Cast Iron

  • #1) Gray Cast Iron. The most common type, gray cast iron features a graphite microstructure consisting of many small fractures.
  • #2) White Cast Iron. While not as common as gray cast iron, white cast iron is another type worth mentioning.
  • #3) Ductile Cast Iron.
  • #4) Malleable Cast Iron.

What does class 40 mean for cast iron?

Class 40 Gray cast iron combines good strength with close-grain structure and has good machinability. Often dismissed as a cheap, dirty, brittle metal; cast iron is getting much more attention and use today because of its machinability, light weight, strength, wear resistance and damping properties.

What is the specification of cast iron?

Most cast irons have a chemical composition of 2.5–4.0% carbon, 1–3% silicon, and the remainder iron. Grey cast iron has less tensile strength and shock resistance than steel, but its compressive strength is comparable to low- and medium-carbon steel.

Is grey cast iron cheap?

The popularity of grey cast iron components (gray iron castings) is because grey iron is one of the cheapest types of iron castings to produce.

Is standard for GREY cast iron?

This standard covers the requirements for grey iron castings. 2 REFERENCES namely, grades FG 150, FG 200, FG 220, FG 260, FG 300, FG 350 and FG 400 . The designat ion system for grey cast iron is given in IS 4843 .

What is GREY cast iron used for?

Grey cast iron applications It is used in applications where its high stiffness, machinability, vibration dampening, high heat capacity and high thermal conductivity are of advantage, such as internal combustion engine cylinder blocks, flywheels, gearbox cases, manifolds, disk brake rotors and cookware.

Which type of casting iron is the strongest?

gray cast iron
While the hardness and strength of steel almost always increase as carbon content rises, in the case of gray cast iron the strongest, hardest grades have less carbon than some of the lower-strength, less expensive grades. Gray iron is usually cast in sand molds, and allowed to cool normally in the mold.

What are the 4 basic types of cast iron?

Different processing techniques can be used to produce the desired type, which include:

  • Grey Cast Iron.
  • White Cast Iron.
  • Ductile Cast Iron.
  • Malleable Cast Iron.

What are the 5 types of cast iron?

Various types of cast irons are produced using different heat treatment and processing techniques, including gray iron, white iron, malleable iron, ductile iron, and compacted graphite iron.