The tensile strength of our products is 10% higher than the national standard, and the elongation is 33% higher than the national standard. Malleable iron has properties that are very similar to mild steel. As a result of the graphite in malleable cast iron being in the form of flocs, it has a modest splitting impact on the matrix, but following high-temperature tempering, the material gains greater strength and plasticity and can be cut. 5 shows that axial fatigue strength is very sensitive to both sintered density level and the number of graphite flakes/mm 2 having a dimension . Steel is more lightweight than iron. It is made of malleable iron, which has high tensile strength, and has a galvanized finish that resists rust in water, air, and steam applications. Ductile cast iron For Use With. The following two numbers list the tensile strength of the iron. Air-quenched and pearlitic malleable iron has a matrix consisting of a ferrite ring around the temper carbon (which produces a lower yield strength) and partially broken lamely pearlite. The malleable cast iron is ductile and may be bent without breaking or fracturing the section. 1/2'' Malleable Iron Beam Clamp: 1/2'' 1/2'' 10: Related Products. The material is brittle at room temperature but has a low melting point and thus has excellent castability. Malleable iron contains more blunt boundaries opposed to flakes, which eliminates the stress concentration problems that grey cast iron can cause. Properties. This class 150 fitting meets standards ASTM A-197, ASME B 1.20.1, and ASME B 16.3 for quality assurance. This corresponds to the maximum stress that can be sustained by a structure in tension. It is used to make machine parts for which steel forgings will be expensive and must have a fair degree of mental accuracy. The alloy constituents affect its color when fractured: white cast iron has carbide impurities which allow cracks to pass straight through, grey cast iron has graphite flakes which deflect a passing crack and initiate countless new cracks as the . It has excellent tensile strength compared to grey cast iron, but its tensile strength is much lower than that of ductile iron. Fig. Malleable iron is relatively easy to machine, and it is shock resistant. Gold and silver are highly malleable. Galvanized pipe fittings should not be used with gas applications. Process Performance Abstract PEARLITIC MALLEABLE IRON is a high strength cast iron recommended for dependable service, strength and machinability in highly stressed parts at work in mobile and stationary mechanisms. It has excellent strength and toughness. Thus a complete designation of a malleable cast iron could be EN-GJMW-350-4 this is a whiteheart malleable cast iron with a minimum tensile strength of 350 N/mm2 on a 12 mm diameter test piece, and a minimum elongation of 4%. Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." Scientists believe that the Earth's core is made up of about 90% iron. When a piece of hot iron is hammered it takes the shape of a sheet. malleable iron: [noun] cast iron containing usually from 2 to 3 percent carbon and 1.5 to 0.8 percent silicon and produced by annealing white cast iron of this composition in order to convert hard brittle cementite to graphite in nodular form so that the material will have greater ductility than white iron or ordinary gray iron containing . It . It has High strength; Malleable cast iron; They are made malleable with the help of annealing. When stress is applied to such a casting in application, the fracture strength will be lower than expected for white iron. Good weldability of material EN-GJMW-360-12W (GTW-S38) opens a possibility of use in sophisticated welded constructions. Pearlitic malleable irons would be stronger but . 2. Malleable iron is a good choice for small castings or castings with thin cross sections (less than 0.25 inch, 6.35 mm). Certifications. FENW38114. 6. Such iron is said to have a 'mottled' appearance. There are three basic malleable cast irons are recognised. - Low thermal expansion. The difference between malleable and ductile iron was toted to be strength. They are used to make parts where forging is expensive like, brake supports, hubs of wagon . 32520, having a minimum tensile strength of 50,000 psi (345 mpa), a minimum yield strength of 32,500 psi (224 mpa), and a minimum elongation in 2 inches (50.8 mm) of 10 percent; and no. White core ductile cast iron is rarely used due to its long elongation process. It is used for parts with low load and high impact and vibration. Malleable cast iron applications. Class 150 Malleable Iron threaded fittings have no pressure class markings. . Material's ability to deform under compression without rupturing Tensile strength. The material is formed when cast iron is heated to high temperatures, typically 1,700 degrees Fahrenheit, and then left to cool very slowly. Structural washers are thick and heavy-duty for mechanical and structural use with high-strength fasteners. RoHS Compliant. The tensile test and hardness requirements of typical parts are as follows: 3. Composition The annealing process of malleable iron causes it to form small particles of carbon that are shaped irregularly. It begins to rust in damp air and at elevated temperatures, but not in dry air. Exposed to a strong magnetic field, any piece of iron can be magnetized. Cast iron is a class of iron-carbon alloys with a carbon content more than 2%. Therefore, it is mainly used to produce wear-resistant parts for power machinery and agricultural machinery. This process of malleableization is performed in two annealing cycles i.e. UL & CSA Listed. Electrical fittings, hand tools, pipe fittings, washers, brackets, fence fittings, power line hardware, farm equipment,mining hardware, machine parts, are all typical applications. The ultimate tensile strength is the maximum on the engineering stress-strain curve. The strength of a material is its ability to withstand an applied load without failure or plastic deformation. In addition, malleable cast iron has excellent surface hardening properties. Black iron pipe is used to transport natural and . THREADING All fittings shall be threaded with American National Standard Pipe Threads (ANSI/ASME B1.20.1) and shall have taper threads, except wrought couplings and wrought caps in sizes 1/8, 1/4, 3/8 and 1/2, which may have The highest stress that a material can withstand for a given number of cycles without breaking Melting Point. White core ductile cast iron. Threaded Rod. This corresponds to the maximum stress that can be sustained by a structure in tension. As for grey irons, the specification is not concerned with the composition of the iron. Malleable cast iron is more suitable for working at low temperatures than ball milled cast iron. The last two numbers in the designation list the minimum elongation or ductility of the iron sample. A common classification for malleable cast iron is ASTM A47. The material ensures resistance against mechanical stress and long durability. Austempered ductile iron (ADI) provides twice the strength of conventional ductile iron at a given level of ductility. In sharp . Relatively high strength and toughness of white malleable cast iron allows products to be used in applications with high dynamic and impact stress. . The capacity of a material to withstand loads tending to elongate is known as ultimate tensile strength (UTS). EE brand pipe fitings are made of White Heart Malleable Iron. Our malleable iron pipe fittings can be used in a wide variety of applications involving steam, air, water, gas, oil, and other fluids. Malleable iron starts out as white iron casting but is then treated at a heat of roughly 1,650F, 900C. Moreover, after suitable heat treatment, its physical properties could be . Aside from these properties and durability, EE white heart malleable iron fittings also has the following characteristics: - Excellent strength and plasticity. Hardness requirements The process of malleableization is performed to convert all combined carbon into Iron and Carbon. Our Production Processing for malleable pipe fittings We buy and use dense ,high strength ,nonporous iron and steel scrap as raw material .Because that is basic point on excellent malleable pipe fittings Thread processed is exactly based on ASME EN BS DIN standard requirements, Fracture toughness values in the range 60-70 MPa m 1/2 have been reported ( Bradley and Srinivasan 1990) for ferritic grades, values somewhat less than for a similar ferritic ductile iron. The capacity of a material to withstand loads tending to elongate is known as ultimate tensile strength (UTS). Malleable cast iron has high tensile strength than the grey cast iron and having excellent machining qualities. Pearlitic malleable cast iron has higher strength, hardness and wear resistance. Comparing with cast steel, malleable cast iron has better abrasive resistance and shock absorption. They are threaded according to EN 10226-1. Other nodular irons produced with graphite in the spherical shape can be difficult to produce in these applications, due to the formation of carbides from the rapid cooling. Ductile Cast iron 5. - Good resistance for abrasion. &#x192;&#x2DC; This is caused by the strength in casting. Originally published as A 197 - 36 T. Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." Malleable cast iron fittings are designed according to the EN 10242 standard and available in black and hot-dip galvanized versions. When it comes to Malleable Iron Structural Washers, you can count on Grainger. These values are comparable to the pearlitic malleable cast iron class 80002 and the ductile iron grade 100-70-03. The main mining areas for iron are China, Australia, Brazil, Russia, and Ukraine. An extensive investigation is made between ductile iron, air quenched-and oil quenched malleable iron based on the properties of more then 350 test bars produced under the same conditions. There are many types of malleable iron fittings, and the appropriate shape and size should be selected according to the needs of the pipe during installation. Compacted Graphite Iron (CGI)In CGI, graphite locally occurs as intercon-nected blunt akes. The castings should be heat-treated. Tensile strength is how much a sample can be stretched before it significantly deforms. Chemical composition, organization and properties of malleable cast iron 1) The chemical composition of malleable cast iron is: wC = 2.2% to 2.8%, wSi = 1.0% to 1.8%, wMn = 0.3% to 0.8%, wS 0.2%, wP 0.1%. View More Conduit body-LB Conduit body-LB ROD38. Cast iron is ferrous alloy having more than 2% carbon in it. Industry Standard. . It's also more malleable and stands up better to tensile stress. Abstract. The strength and ductility of malleable irons would overlap the as-cast properties of ductile iron shown in Fig. The UTS for malleable cast iron is 580 MPa. &#x201A;&#x17E; So, it is mainly used to produce the abrasion resistant parts for power and agricultural machinery. As a result of its good tensile strength and ductility, malleable cast iron is used for electrical fittings and equipment, hand tools, pipe fittings, washers, brackets, farm equipment, mining hardware, and machine parts. This made it much easier to work with and less likely to fail. MALLEABLE CAST IRON (CAST WHITE IRON, ANNEALED) Castability Standard castability: much easier than steel casting Yield Strength 50k psi 33k psi Elongation % 18 0.5 0 12 Tensile Strength 72k psi 40-50 k psi 25 k psi 52 k psi Hardness [Brinell] 130-217 260 450 130 Corrosion Resistance Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." 4 Tensile properties of specimens made with MIP vs sintering temperature [1] Fig. 3/8'' X 1-1/4'' Fender Washer Add to submittal. Its tensile strength is higher than grey cast iron and has excellent machining qualities. Malleable iron starts out as white iron casting but is then treated at a heat of roughly 1,650F, 900C. Like ductile cast iron the matrix is the continuous phase and so the final structure will have similar properties to ductile cast iron, excellent strength, ductility, and toughness. Current edition approved May. The remaining lamellar pearlite reduces machinability to a limit of 240 HB. Malleable cast iron is an iron alloy containing a small percentage of carbon (typically between 2 and 4 percent). The designation according to ISO 5922 (1981) of malleable cast iron consists of one letter designating the type of iron, two figures designating the tensile strength and two figures designating the minimum elongation. Ductile Cast Iron Ultimate tensile strength of malleable cast iron - ASTM A220 is 580 MPa. Manchester: 0161 368 4545. Because of its high strength and hardness, pearlite matrix malleable cast iron is used for critical parts with high load, wear-resistance and specific toughness requirements. It dissolves readily in dilute acids, and is chemically active. It is resistant to scuffing and wear. Published May 2000. In general, malleable iron is very good for applications requiring good tensile strength and the ability to flex without breaking (ductility). Malleable cast iron has a range of features, such as strength, . Steel has entirely replaced iron in the creation of houses, buildings, railways, and many other objects. Malleable iron castings for automobiles (ASTM A602-87) They are used for automotive and the same industrial products with the same grade of ferrite, pearlite, tempered pearlite and tempered martensite. One of iron's identifying characteristics is that it is strongly magnetic. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fracture toughness and fatigue. The greatest longitudinal stress a material can bear without tearing apart Fatigue strength. It has a tensile strength of 350-450 Mpa, and hardness of approximately 220 HB. Malleable Iron Pipe Fittings, Black Pipe Fittings from Quality Pipe. the american national standard specifications for malleable iron castings ansi/astm a47-77 specifies the following grades and their properties: no. 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