Malleable cast iron

Malleable cast iron - In other words, it's the name of a soft, ductile alloy produced by casting from white cast iron. The production process also includes annealing in special furnaces for 20 to 100 hours at a temperature of 950 to 970 degrees Celsius, followed by heat treatment. The production technology for this alloy uses a long annealing process, which decomposes cementite and forms graphite.

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Malleable cast iron It has a steel base and contains carbon in the form of graphite. Because the graphite is in the form of flakes, this cast iron is slightly ductile and malleable. malleable cast iron It's not as fast and quite expensive. Therefore, its use in industry is limited.

Ductile iron grades

Ductile iron grades are classified as follows: KCh30-6, KCh33-8, KCh35-10. The principle of this marking of cast iron alloys is built as follows: the letters "KCh" mean malleable cast iron, after the letters, the first two digits indicate the tensile strength tolerance, followed by two digits - elongation, small under tension. Ductile iron grades are determined according to GOST standards, which contain standardized characteristics for each alloy. The percentage of additives is controlled and specified during metal smelting and is indicated in documents, as well as directly on the product itself when it is prepared for shipment to the customer. In certain cases, for large volumes of ordered products, some deviations from established standards are possible if necessary to meet the customer's specific requirements.

For the convenience of users, some data on individual alloy grades is collected in the following table.

Applications of malleable cast iron

Applications of malleable cast iron It is found in various industries, although it is not produced in the same volumes as alloyed or cast iron. The alloy is primarily used to produce thin-walled castings. It is used in various branches of mechanical engineering. This is very practical because the mechanical properties of malleable cast iron are quite high. For example, regular consumers of this alloy include industries such as the automotive industry, tractor manufacturing, agricultural machinery, electrical industry, machine tool manufacturing, and heavy engineering. Applications of malleable cast iron It has found favour in these industries due to its good mechanical properties, high ability to withstand impact loads, good wear resistance and the possibility of its production in sufficient quantities, although it has a relatively high cost price.