Iron Casting

Iron casting, one of the oldest and most recognized casting methods, is melted and poured into molds or casts to creat a part of products of desired dimensions and shape. They are allowed to cool down and solidfy before being removed from the molds and used. Iron castings can be used in a variety of industries and employed for an array of uses.

Cast iron is an alloy of iron, carbon and silicon with carbon levels of about 3.2% and silicon at about 2.2%. Compared with steel casting, iron casting has a wide range of advantages of few less lucrative properties. We can divide cast iron into grey cast iron, ductile cast iron and malleable cast iron. The difference in these types of iron is the characteristics of the graphite used in the material.

Grey Iron Casting: Grey iron is called that because when it is fractured, its surface appears a dull grey color. It has good casting properties, high machinability, good wear resistance as well as good vibration damping. It can withstand greater load and has a good degree of resistance against corrosion. It, however, has low tensile strength and elongation properties. It is often used to manufacture parts like cylinder blocks, pistons, gear boxes, knives, table wheels, pipes, valves, etc.

Ductile Iron Casting: In Ductile iron, the graphite is like a pillow and acts as “crack-arresters” to give ductility and toughness superior to all other cast irons. They have high strength, high heat-resistance and toughness. They are used in a wide range of industries: engineering, agriculture, automotive, road and construction, etc. The production of ductile iron casting is more complex and expensive than grey cast iron. They may also have more casting defects than grey iron casting.

Common Used Material Standards in Iron Casting:

Cast Iron Standards
 GB AWS BS NF DIN ISO
Grey Iron HT200 No.30 Grade 220 EN-GJL-200 GG20 200
HT250 No.35 Grade 260 EN-GJL-250 GG25 250
HT300 No.45 Grade 300 EN-GJL-300 GG30 300
HT350 No.50 Grade 350 EN-GJL-350 GG35 350
Ductile Iron QT450-10 65-45-12 GGG-40 EN-GJS-450-10 450/10 450-10
QT450-18 60-40-18 GGG-40  EN-GJS-450-18 400/18  450-18
QT500-7 80-55-06 GGG-50 EN-GJS-500-7 500/7 500-7

Our Iron Foundry

CFS Iron Foundry has a long history of iron casting production, we continue to upgrade our equipment and plant facilities in order to provide our customers with the highest quality products using the latest lost foam casting and sand casting technology. Our modern furnaces can help to reduce production times with faster melting, and enhance our ability to provide competitively priced high quality iron castings. Our knowledgeable and experienced team provides in-house heat-treating and metallurgical testing to ensure timely production of your order. Give us an email or call for your needs of custom iron castings.