Comparison of ductile iron vs steel | Penticton Foundry

    Nov 05, 2015 · Which Alloy is Better? Ductile Iron vs Steel. As we've already compared ductile iron castings to gray iron castings we thought we'd compare ductile iron and cast steel across a variety of properties to help determine which alloy is better for a given application. This .

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    Understanding Cast Irons - Ductile Iron

    Understanding Cast Irons - Ductile Iron . Ductile iron, also referred to as nodular iron or spheroidal graphite iron, was patented in 1948. After a decade of intensive development work in the 1950s, ductile iron had a phenomenal nine-fold increase in use as an engineering material during the 1960s, and the rapid increase in commercial ...

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    Measuring Nodularity in Cast Iron - Olympus IMS

    Application: Measuring the degree of nodularity in cast iron, or distinguishing nodular iron from gray iron. Background: Carbon in the form of graphite is often used as an additive in the production of cast iron, amounting to 2 to 4 percent by weight or 6 to 10 percent by volume in typical castings. The microstructure of graphite within cast iron has major effects on the casting's mechanical ...

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    717 632-4165 | Gray/Ductile Iron Castings Penn-Mar ...

    Advantages of Ductile Iron (Nodular Iron, SG Iron) Ductile iron is a cast iron in which the precipitated graphite present is in the form of tiny spheres or nodules because of additives introduced to the molten iron before casting. The resulting microstructure gives ductile iron higher strength, more elongation and greater toughness than gray iron.

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    GGG400 Ductile Cast Iron GGG-40.3 Nodular Cast Iron ...

    The various physical properties of a nodular cast iron include density, thermal expansion, conductivity, magnetic properties, electrical properties and heat capacity. In comparison to grey iron, nodular cast iron has a very high tensile strength up to 90k psi. It is also very strong than grey iron and has good fracture resistance.

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    ADI, Aluminum, Ductile Iron, Grey Iron and Steel Casting ...

    Carson Castings has been sourcing quality Ductile, Gray Iron, Steel, and ADI castings at competitive prices to niche markets and Fortune 500 companies since 1956. For over 60 years, Carson Castings continues to meet your raw and machined sand and investment .

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    Nodular Iron - an overview | ScienceDirect Topics

    Ductile cast iron. Ductile (nodular) iron has and continues to find wide use in the production of many industrial components. Ductile iron is similar to gray cast iron in composition, however during casting of ductile iron the graphite nucleates as spherical particles as opposed to flake-like structures.

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    Gray Iron | Iron Casting Research Institute, Inc.

    The improved properties obtained with high-purity raw materials in making gray iron should stimulate further investigations particularly in regard to obtaining greater toughness. There is a need for a grade of iron between conventional gray iron and nodular iron providing it can be made with the same ease as gray iron.

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    The Difference between Ductile Iron and Gray Iron ...

    Gray Iron. American Iron and Alloys has the best replacement for steel in the form of V-2 Class 40 Versa Bar continuous cast gray iron.During solidification, rod-like graphite flakes precipitate into the composition, outlining the difference between gray and ductile iron.

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    Ductile iron|ductile cast iron|nodular cast iron ...

    Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron. While most varieties of cast iron are brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions that are spherical in shape rather than striated.

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    Nodular Ductile Iron - totalmateria

    In other words, CG iron is less section sensitive than gray iron. However, high cooling rates are to be avoided because of the high propensity of CG iron for chilling and high nodule count in thin sections. The usual microstructure of gray iron is a matrix of pearlite with graphite (flakes dispersed throughout).

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    Processing Techniques and Productions of Ductile Iron: A ...

    The main structural difference between nodular cast iron and gray cast iron is in the graphite form. Ordinary gray cast iron is characterized by a distribution of random lamellae of gra-phite in the metal matrix, while in nodular cast iron the gra-phite has the form of small spheroids. With respect to lamel-

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    Heat Treatment of Cast Irons - Heat Treat Doctor

    Nodular iron, also known as ductile iron or spheroidal graphite iron, is cast iron in which the graphite is present as tiny balls, or spherulites, instead of graphite flakes (as in gray iron), or compacted aggregates (as in malleable iron). The nodular irons typi-cally contain from 3.2-4.1% C, 1.8-2.8% Si and up to 0.80% Mn as major constituents.

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    Nodular Ductile Iron - totalmateria

    In other words, CG iron is less section sensitive than gray iron. However, high cooling rates are to be avoided because of the high propensity of CG iron for chilling and high nodule count in thin sections. The usual microstructure of gray iron is a matrix of pearlite with graphite (flakes dispersed throughout).

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    Ultrasonic Testing of Ductile Iron Castings to Verify ...

    Apr 01, 2017 · Ductile iron is an iron-carbon casting material whose matrix includes carbon in the form of nodular graphite particles. Rounded graphite nodules in the ductile iron matrix offer greater resistance to stress concentration when compared to graphite flakes (as in gray cast iron) and, therefore, inhibit the creation of cracks. Safety-critical automotive components cast from ductile iron must be ...

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    Ductile iron - Wikipedia

    Ductile iron, also known as ductile cast iron, nodular cast iron, spheroidal graphite iron, spheroidal graphite cast iron and SG iron, is a type of graphite-rich cast iron discovered in 1943 by Keith Millis. While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions.

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    Gray Iron Casting | Ductile Iron Casting | Malleable Iron ...

    Gray, Ductile and Malleable Iron. Malleable Iron is rarely specified anymore because ductile iron offers better properties at comparable costs. Cast iron is a family of metals that are iron-carbon-silicon alloys containing more than 2% carbon (C), usually 1 - 3% silicon (Si) and a .

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    Grey Cast Iron, Nodular Cast Iron and Other Cast Irons

    Nodular cast iron Nodular cast iron is grey cast iron with spherical graphite. It differs from the grey cast iron with lamellar graphite in its chemical composition, merely due to the fact that, in addition to the basic elements, it also contains small quantities of magnesium (from 0.04 to 0.06 %), cerium and rare earths that influence the ...

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    What are the properties of cast iron? Is it magnetic? - Quora

    Oct 02, 2017 · The most common type of cast iron is grey cast iron although other types do exist with somewhat different properties. Cast iron contains a lot of carbon compared to steel, around 3–5% this is more than can be absorbed into the structure of the iro...

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    Different Types Of Cast Iron | White cast iron, Grey cast ...

    The resultant cast iron has properties that vary from both grey and white cast iron. In case of malleable cast iron, the graphite structure is formed into irregularly shaped spheroidal particles rather than flakes that are usually present in gray cast iron. This make the malleable cast iron .

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    The Differences Between Ductile Iron and Gray Iron ...

    Jun 17, 2015 · The addition of magnesium in ductile iron means that the graphite has a nodular/spherical shape conferring higher strength and ductility as opposed to gray iron which is flake shaped. For example, 18% elongation can be easily achieved .

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