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    Comparison of ductile iron and cast steel

    The strength of ductile iron is comparable to that of cast steel. Ductile cast iron has a higher yield strength of 40k compared to cast steel's 36 In most municipal applications, such as water, salt water, steam, etc., the corrosion and oxidation resistance of ductile cast iron exceeds that of cast steel.




    Comparison of ductile cast iron and cast iron (gray cast iron)

    Comparison of ductile cast iron and cast iron (gray cast iron)




    What are the specifications of ductile iron pipe?

    The main components of ductile iron pipe are carbon, silicon, manganese, sulfur, phosphorus and magnesium. In the ferrite and pearlite matrix on the distribution of a certain number of spherical graphite, according to the nominal caliber and the different requirements of the elongation, the matrix organization of ferrite and pearlite proportion is different, the proportion of pearlite is generally not more than 20%, large caliber is generally controlled at about 25%. Small tensile strength:420/Mpa, small yield strength 300/Mpa, small elongation 7%.




    Roller Knowledge

    Cast iron rolls in the carbon content of 2.5% -3.5% or so, according to the main material can be divided into ordinary cast iron rolls, high nickel-chromium infinite cold hardened composite cast iron rolls, high chromium composite cast iron rolls and alloy ductile iron rolls of four categories. Cast iron rolls in the common organization can be divided into matrix, carburite, graphite three categories, the matrix organization of the main clathrate, ferrite, pearlite, bainite and martensite, graphite in the cast iron in the form of general flake and spherical two kinds of


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