Ductile iron owes its remarkable mechanical properties to the spheroidal shape of its graphite: tensile strength, impact resistance, high elastic limit, good elongation. Dura-Bar ductile iron is a cost-saving alternative to low-medium carbon steels and has similar strengths with excellent free machining properties. Graphite precipitation in spheroidal form is obtained by the controlled addition of a small amount of magnesium to the previously desulfurized base iron. A ferrous product classification can be established in terms of the carbon content of the basic metal: Below 1.7 % carbon, solidification produces an austenitic single phase material, with the carbon present in the structure in solid solution. These are due to the spheroidal nature of the graphite particles. Ductile Iron ASTM A536 Grade 65-45-12 (Related Standards-SAE J434C D4512; ISO 1083 400-12) ASTM A536 65-45-12 is a nodular Iron with a ferritic and pearlitic microstructure and mechanical properties comparable to low alloy steels. It is usual to class them in groups according to the graphite condition, making an additional differentiation based on the structure of the metal matrix (ferritic, pearlitic). It is usual to class them in groups according to the graphite condition, making an additional differentiation based on the structure of the metal matrix (ferritic, pearlitic). Ductile iron is distinguished from ordinary grey iron by its remarkable mechanical properties (elasticity, impact strength, elongation...). Physical Properties of Ductile Iron and Alternative Materials. Gray Iron* 120-90-02. 0.3% C Cast Steel. Nodular cast iron is a high-strength cast iron material developed in the 1950s. Note 1:By agreement between the manufacturer and the customer, the conventional elastic limit at 0.2 % (Rp0,2) can be measured. For more specific values, follow the links immediately below. Silicon (usually 1 to 3 %) plays a particular part and makes the iron in reality, a ternary alloy: iron, carbon, silicon. Ductile iron is frequently referred to as ductile cast iron, nodular case iron, spheroidal graphite iron, or SG iron. These properties are further enhanced by control of the chemical analysis and heat treatment of the metal matrix. The possibility of crack propagation lines is therefore eliminated. Saint Gobain PAM UK Wins Major Contract With Telecommunications Giant BT, Saint-Gobain PAM UK takes the pressure off Anglian Water with an access cover solution, Small Business, Enterprise, and Employment Act. In so-called “grey irons” the graphite is present in the form of flakes, hence their metallurgical name: flake graphite irons (sometimes called lamellar graphite irons). This page shows summary ranges across all of them. A decisive advance was then made in 1948 when research in both the U.S.A. and Great Britain led to the discovery of spheroidal graphite iron, more commonly known as ductile iron.The graphite no longer exists in flake form but precipitates in a spherical form. The high carbon content in ductile iron allows it to maintain the traditional qualities of other cast irons such as: 1. compression strength 2. machinability 3. fatigue strength 4. castability 5. abrasion resistance Wh… Ductile iron is distinguished from ordinary grey iron by its remarkable mechanical properties (elasticity, impact strength, elongation...). For welded components, a higher Brinell hardness is admissible in the area affected by heat adjacent to the weld. Physical Properties of Ductile Iron and Alternative Materials. EMJ sells Dura-Bar brand 65-45 … Ductile Iron. The possibility of crack propagation lines is therefore eliminated. Its comprehensive properties are close to steel. In so-called “grey irons” the graphite is present in the form of flakes, hence their metallurgical name: flake graphite irons (sometimes called lamellar graphite irons). The term “Cast iron” covers a wide variety of Fe-C-Si alloys. A decisive advance was then made in 1948 when research in both the U.S.A. and Great Britain led to the discovery of spheroidal graphite iron, more commonly known as ductile iron.The graphite no longer exists in flake form but precipitates in a spherical form. Malleable Iron. The SAE standard J434 is commonly used for specifying automotive Ductile Iron castings. For welded components, a higher Brinell hardness is admissible in the area affected by heat adjacent to the weld. Unit. Ductile iron owes its remarkable mechanical properties to the spheroidal shape of its graphite: These properties are further enhanced by control of the chemical analysis and heat treatment of the metal matrix.Ductile iron maintains the traditional qualities of cast irons, resulting from the high carbon content: All PAM pipes and fittings are manufactured from ductile iron complying with Standards EN 545 and ISO 2531. 100-70-03. The properties of ductile cast iron include nine common variations. Physical Properties of Ductile Iron and Alternative Materials. Other elements present in iron in very low proportions have an effect on the structure, mechanical properties and casting of the metal. Graphite precipitation in spheroidal form is obtained by the controlled addition of a small amount of magnesium to the previously desulfurized base iron. 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Above 1.7% carbon, the carbon cannot all be dissolved in the iron structure and consequently solidifies in the form of a secondary phase, either as graphite (pure C), or iron carbide (Fe3C).

ductile iron properties

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