What is the difference between ductile iron and malleable iron?

Answer 1

Malleable cannot be broken like a cast fitting can be and normally malleable fittings / pipe do not have a seam

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Its full name is Malleable CAST Iron - it is cast as "ordinary" cast-iron but is a lot less brittle. It is an important material combining some of the properties of cast-iron with those of mild-steel.

Answer 2

Malleable cast iron has some differences with ductile iron, although it has many similar properties with ductile iron, and it can be replaced by ductile iron in some applications.

Malleable cast iron is produced from white cast iron, which is made from hot liquid iron with certain chemical components. The white cast iron needs to be treated by malleablizing, such as graphitizing or oxidation and decarbonization, then its metallographic structures or chemical components will be changed, so can become into malleable cast iron.

Answer 3

In essence, cast iron has a much higher carbon content (~4%) than what one could define as "iron" either 100% pure, or very low carbon content iron.

this makes cast iron much harder than many other types of iron, which makes it less usefull in places where the material will have to take a varying load, but also makes it suitable in instances where hardness is desirable - such as Victorian knives. however, modern alloys have made much cast iron useless as they combine its hardness with a reduction in is brittleness

Answer 4

Ductile iron is a type of cast iron with a higher carbon content than malleable iron, making it more ductile and less brittle. Ductile iron is typically used in applications requiring strength and impact resistance. Malleable iron undergoes additional heat treatment to convert its carbon content into graphite nodules, making it more ductile and easier to shape. It is commonly used for fittings and small castings.

Answer 5

Hi Amani :)

I have the same problem :))

Answer 6

maleable iron