JC Casting - Grey Iron Casting

Grey Iron (or gray iron) is the most common type of ferrous cast material in the world. It is named after the gray color of the fracture surfaces created by it. It is caused by the presence of graphite.

Gray Iron is commonly used in static castings where the rigidity or stiffness of the part is more important than the tensile strength or elongation. Such as engine blocks, various housings, valve bodies, mold castings.

Best Use For Gray Iron Castings

There are numerous uses for grey iron castings and they are usually classified into categories based on their Grade.

Class 300 Grey Iron is mostly used in the production of beds, gears, cylinder blocks, heavy-duty machine tools, high-pressure hydraulic components, cylinder heads, bushings, piston rings etc.

Class 200 and Class 250 are mostly suitable for manufacturing cylinder bases and liners, brake wheel, gearboxes, coupling plate, flywheel and pressure valves.

Class 100 and Class 150 category are typically utilized for creating hammers, pipes, pulleys, protective covers, hand wheels, bearings and pumps. Grey iron castings are the optimal choice for the construction of highly durable and strong products.

Gray iron castings are manufactured easily and have good machinability. They are typically used in applications where strength is important, but not the main required property:

• PumpsBrackets
• HousingsSteering Knuckles
• Weights & Counter
• Compressors
• Powertrain PartsSuspension ComponentsEnd PlatesValves and FittingsPulleysLinkagesBuilding facadesTable legs and bases

• Gray iron casting is durable, low-cost solution, with heat dissipation, and high density. 
• Gray iron has good fluidity and is easily machined.

Different tensile strengths.

Such as 6 tons sq.in or even 18 tons/sq.in. The average tensile strength is around 7 tons/sq.in.

It is possible to increase their strength easily by adding vanadium if has specific applications.

Withstand large amounts of compressive forces.

Its high compressive strength is about three times more than its tensile strength. This is the foremost reason as to why they are a premier choice for huge posts and columns in big buildings.

Grey iron castings have high damping capacity and excellent machining capabilities. This makes them perfectly suitable for all types of machine bases, cylinder blocks, brake parts. Since its damping capacity is about 20-25 times higher than steel and also other iron types. It reduces vibration, inaccuracies as well as excessive wear and tears on machinery and bearings.

Grey iron castings are highly resistant to oxidation. prevent rust. Grey iron castings are the ideal solution to overcome problems of corrosion.

There are numerous uses for grey iron castings. They are usually classified into categories based on their Grade.