What are the uses of GREY cast iron?

What are the uses of GREY cast iron?

It is the most common cast iron and the most widely used cast material based on weight. It is used for housings where the stiffness of the component is more important than its tensile strength, such as internal combustion engine cylinder blocks, pump housings, valve bodies, electrical boxes, and decorative castings.

What is the most common use of cast iron?

Malleable cast iron applications As a result of its good tensile strength and ductility, malleable cast iron is used for electrical fittings and equipment, hand tools, pipe fittings, washers, brackets, farm equipment, mining hardware, and machine parts. A common classification for malleable cast iron is ASTM A47.

What are the applications of cast iron?

Applications of cast iron

• It is used in making pipes, to carry suitable fluids.
• It is used in making different machines.
• It is used in making automotive parts.
• It is used in making pots pans and utensils.
• It is used in making anchor for ships.

What is an important property of gray cast iron?

Gray cast iron characterized by flake graphite has certain strength, hardness, modulus of elasticity, shock absorption, wear resistance and thermal conductivity, especially with excellent casting performance, good cutting performance and low casting cost. So far, it is still the most widely used cast iron in the world.

What is cast iron used for in construction?

Cast iron has good compressive strength and was successfully used for structural components that were largely in compression in well-designed bridges and buildings. In a few instances bridges and buildings built with cast iron failed when misused.

What is gray casting?

Grey cast iron (a.k.a. gray iron castings) is a type of iron found in castings known for its grey color and appearance caused by graphite fractures in the material. In a grey iron casting, you can see little black flakes of graphite. These flakes cause fractures and cause the material to have a grey appearance.

What is the composition of GREY cast iron?

Gray cast iron. Gray cast iron is a broad term used for a number of cast irons whose microstructure is characterized by the presence of flake graphite in the ferrous matrix. Such castings often contain 2.5%–4% carbon, 1%–3% silicon, and some additions of manganese ranging from 0.1% to 1.2%.

What are the advantages of malleable cast iron over white or GREY cast iron?

Malleable iron shows greater ductility than gray iron, and while hard, it lacks the brittleness of white iron. Although not cast as easily as gray iron or ductile iron, it will cast better than some other materials, including white iron. Additionally, malleable iron offers excellent surface hardening.

Is gray cast iron magnetic?

The magnetic properties of gray cast iron vary widely, from low permeability and high coercive force to high permeability and low coercive force.

Why is cast iron only used in building heavy structures?

Cast iron has good compressive strength and was successfully used for structural components that were largely in compression in well-designed bridges and buildings.

Is gray iron magnetic?

Magnetic Properties The actual graphite structure and the type of grey iron influence properties such as permeability, coercive force and hysteresis. All grey irons exhibit ferromagnetism except austenitic grades.

What is difference between GREY cast iron and white cast iron?

Like gray cast iron, white cast iron features many small fractures. The difference is that white cast iron features cementite below its surface, whereas gray cast iron features graphite below its surface. The graphite creates the appearance of a gray color, while the cementite creates the appearance of a white color.

What is greygrey cast iron used for?

Grey cast iron is the most common form of cast iron. 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.

What is the difference between white cast iron and gray cast iron?

Gray cast iron is named after its gray fractured surface, which occurs because the graphitic flakes deflect a passing crack and initiate countless new cracks as the material breaks. White cast irons are hard and brittle. Gray cast irons are softer with a microstructure of graphite in transformed-austenite and cementite matrix.

What are cast irons used for?

Cast irons have become an engineering material with a wide range of applications and are used in pipes, machines and automotive industry parts, such as cylinder heads, cylinder blocks and gearbox cases. It is resistant to damage by oxidation.

What makes grey iron grey iron?

Specifically, what makes grey iron “grey iron,” is the graphite flake structure that is created during the cooling process from the carbon that is in the component. Grey iron is a result of both the materials used and the process used to cast a part.