Tapped Threads Back and Bottom, High Strength Iron, Case Hardened Steel Bolt. Chemical Properties 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%. It is used for parts with low load and high impact and vibration. 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 . View More Conduit body-LB Conduit body-LB The Ultimate Tensile Strength of Malleable Cast Iron constant displays the value of ultimate tensile strength for malleable cast iron ASTM A220 (580 MPa).. The greatest longitudinal stress a material can bear without tearing apart Fatigue strength. This made it much easier to work with and less likely to fail. 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, 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. 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. Malleability. Properties. The following two numbers list the tensile strength of the iron. Ultimate tensile strength of malleable cast iron - ASTM A220 is 580 MPa. It is resistant to scuffing and wear. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and . Black iron pipe is used to transport natural and . Its ductility means that malleable iron allows for a variety of "cold working" operations during finishing. Austempered ductile iron (ADI) provides twice the strength of conventional ductile iron at a given level of ductility. Nodular graphite is present in the malleable cast iron. Compacted Graphite Iron (CGI)In CGI, graphite locally occurs as intercon-nected blunt akes. This changes the carbon in the iron carbide of the cast iron into graphite and ferrite plus carbon. Its tensile strength is higher than grey cast iron and has excellent machining qualities. Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." 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 Malleable iron has properties that are very similar to mild steel. Steel is more lightweight than iron. FENW38114. These values are comparable to the pearlitic malleable cast iron class 80002 and the ductile iron grade 100-70-03. Malleable iron has properties that are very similar to mild steel. Malleable iron was the first iteration that could be hammered and bent into shape. White core ductile cast iron. 1/2'' Malleable Iron Beam Clamp: 1/2'' 1/2'' 10: Related Products. History 6. 3/8'' X 1-1/4'' Fender Washer Add to submittal. London: . Malleable Cast Iron. Material's ability to deform under compression without rupturing Tensile strength. The ultimate tensile strength is the maximum on the engineering stress-strain curve. Ultimate tensile strength of malleable cast iron - ASTM A220 is 580 MPa. . The tensile properties set apart malleable iron from the others in cast iron category. White cast iron has terrible cutting performance. For Use With. 10, 2000. It begins to rust in damp air and at elevated temperatures, but not in dry air. RoHS Compliant. It has excellent tensile strength compared to grey cast iron, but its tensile strength is much lower than that of ductile iron. yield strength, that stress producing an extension under load of 1 This specication is under the jurisdiction of ASTM Committee A-4 on Iron Castings and is the direct responsibility of Subcommittee A04.02 on Malleable Iron Castings. When a piece of hot iron is hammered it takes the shape of a sheet. Malleable Iron. Ductile Cast Iron - Low thermal expansion. Composition The annealing process of malleable iron causes it to form small particles of carbon that are shaped irregularly. Galvanized pipe fittings should not be used with gas applications. first annealing above 900 o C and second annealing below this temperature. There should be a link between test bar . The process of malleableization is performed to convert all combined carbon into Iron and Carbon. A common classification for malleable cast iron is ASTM A47. Shawston provide a range of Malleable Iron and Mild Steel Fittings for Mechanical and Fire sectors, next day delivery via nationwide depots. Malleable iron is a form of . Malleable cast iron has high tensile strength than the grey cast iron and having excellent machining qualities. Moreover, after suitable heat treatment, its physical properties could be . Malleable iron contains more blunt boundaries opposed to flakes, which eliminates the stress concentration problems that grey cast iron can cause. 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. In general, malleable iron is very good for applications requiring good tensile strength and the ability to flex without breaking (ductility). They are threaded according to EN 10226-1. . This class 150 fitting meets standards ASTM A-197, ASME B 1.20.1, and ASME B 16.3 for quality assurance. Electrical fittings, hand tools, pipe fittings, washers, brackets, fence fittings, power line hardware, farm equipment,mining hardware, machine parts, are all typical applications. This corresponds to the maximum stress that can be sustained by a structure in tension. Pearlitic malleable irons would be stronger but less ductile than ferritic malleable cast irons for the same reasons as for ductile iron. The magnetic force produced by this iron is what creates the magnetic north and south poles. Metals are described as malleable (can be beaten into sheets) and ductile (can be pulled out into wires). The strength and ductility of malleable irons would overlap the as-cast properties of ductile iron shown in Fig. The tensile test and hardness requirements of typical parts are as follows: 3. Ultimate tensile strength of malleable cast iron - ASTM A220 is 580 MPa. Malleable iron is relatively easy to machine, and it is shock resistant. UL & CSA Listed. Examples of malleable metals are gold, iron, aluminum, copper, silver, and lead. The last two numbers in the designation list the minimum elongation or ductility of the iron sample. Generally, the martensitic grades are grouped with the pearlitic materials; they might be thought of as extensions (at the higher strength end of the range) of pearlitic malleable iron. It dissolves readily in dilute acids, and is chemically active. The capacity of a material to withstand loads tending to elongate is known as ultimate tensile strength (UTS). Black pipe fittings (black malleable iron fittings) are used to make connections to black iron pipe. the american national standard specifications for malleable iron castings ansi/astm a47-77 specifies the following grades and their properties: no. Malleable cast iron is more suitable for working at low temperatures than ball milled cast iron. White core ductile cast iron is rarely used due to its long elongation process. One of iron's identifying characteristics is that it is strongly magnetic. 4 Tensile properties of specimens made with MIP vs sintering temperature [1] Fig. In addition, malleable cast iron has excellent surface hardening properties. . This corresponds to the maximum stress that can be sustained by a structure in tension. 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%. It has a tensile strength of 350-450 Mpa, and hardness of approximately 220 HB. . Design Strength Pressure-containing fittings including the component parts of unions shall be designed to withstand the design test pressures given in the table below . These properties make it useful for a range of commercial purposes. ASTM Specification A-47-77 is for ferritic malleable iron and requires a minimum of 32,000 psi (220 MPa) yield strength, 50,000 psi (345 MPa) tensile strength, and 10% elongation in two inches (50 mm) for grade 32510. Some countermeasures can be applied to enhance . Strength. In 1943, however, ductile iron was developed. The ultimate tensile strength is the maximum on the engineering stress-strain curve. Fig. The white cast iron is heat-treated (Annealing) at about 950 Degree Celsius for 24 or 48 hrs and then allow to cool for 24 hrs or 48 hrs. The strength of a material is its ability to withstand an applied load without failure or plastic deformation. Structural washers are thick and heavy-duty for mechanical and structural use with high-strength fasteners. Cast Iron is a group of Iron - Carbon-Silicone materials with 1.8-4% of Carbon (C) and 1-3% of Silicon (Si) content. HIGH QUALITY MATERIAL - This pipe cap is mainly composed of iron, carbon and silicon alloy composition, with high strength, good toughness, plasticity and . Malleable cast iron is an iron alloy containing a small percentage of carbon (typically between 2 and 4 percent). Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." The capacity of a material to withstand loads tending to elongate is known as ultimate tensile strength (UTS). 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. 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. The tensile strength of our products is 10% higher than the national standard, and the elongation is 33% higher than the national standard. When it comes to Malleable Iron Structural Washers, you can count on Grainger. The UTS for malleable cast iron is 580 MPa. 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. Manchester: 0161 368 4545. Malleable Iron Pipe Fittings, Black Pipe Fittings from Quality Pipe. As for grey irons, the specification is not concerned with the composition of the iron. Steel is unquestionably stronger than iron. When stress is applied to such a casting in application, the fracture strength will be lower than expected for white iron. 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. Supplies and solutions for every industry, plus easy ordering, fast delivery and 24/7 customer support. 5. Fabrication and other . 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 . The process of annealing takes almost 72 hours. Originally published as A 197 - 36 T. 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. Malleable iron starts out as white iron casting but is then treated at a heat of roughly 1,650F, 900C. The main mining areas for iron are China, Australia, Brazil, Russia, and Ukraine. 2) View More. This specification also lists a grade 35018, but this is no longer in common production. Certifications. Malleable iron can also . Malleable iron is a good choice for small castings or castings with thin cross sections (less than 0.25 inch, 6.35 mm). Scientists believe that the Earth's core is made up of about 90% iron. Comparing with the gray cast iron, malleable cast iron has better strength and ductility, especially better impact resistance in low temperatures. Malleable cast iron applications. Mechanical Properties The ratio of yield strength to tensile strength of malleable cast iron is close to that of ball milled cast iron, but is about 60% ~ 80% higher than that of carbon steel. 35018, Malleable iron starts out as white iron casting but is then treated at a heat of roughly 1,650F, 900C. 2.1 Malleable iron features. This is because it's a more dense material. Malleable cast iron has a range of features, such as strength, . Good weldability of material EN-GJMW-360-12W (GTW-S38) opens a possibility of use in sophisticated welded constructions. 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. The material ensures resistance against mechanical stress and long durability. Cast iron is a class of iron-carbon alloys with a carbon content more than 2%. Malleable iron possesses considerable ductility and toughness because of its combination of nodular graphite and a low-carbon metallic matrix. ROD38. Its usefulness derives from its relatively low melting temperature. Tensile strength is how much a sample can be stretched before it significantly deforms. Pearlitic malleable irons would be stronger but . Malleable Iron Pipe Fittings | McMaster-Carr Pipe Size Thread Type NPT NPSC BSPT NPTF BSPP NPSL Metric UN/UNF (SAE Straight) Type Material Iron Steel Brass Copper Finish Black Coated Galvanized Epoxy Coated Enamel Coated Shape System of Measurement Inch Metric Length 3/16" 1/4" 0.28" 9/32" 19/64" 0.31" 5/16" 0.34" 11/32" 3/8" 0.38" 13/32" 0.42" It has excellent strength and toughness. 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. Malleable iron is typically used for small castings requiring good tensile strength and the ability to flex without breaking (ductility). Abstract. Properties of Malleable Cast Iron 1. ‚ž So, it is mainly used to produce the abrasion resistant parts for power and agricultural machinery. The remaining lamellar pearlite reduces machinability to a limit of 240 HB. Comparing with cast steel, malleable cast iron has better abrasive resistance and shock absorption. This process of malleableization is performed in two annealing cycles i.e. 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. 3/8''-16 x 10' Threaded Rod . Iron metal is greyish in appearance, and is very ductile and malleable. Yes. Relatively high strength and toughness of white malleable cast iron allows products to be used in applications with high dynamic and impact stress. ADI can have strength in excess of 230 ksi (1,586 MPa); however, its modulus is 20% lower than steel with a comparable strength. Ductile Cast iron Our Malleable Iron Long Two Socket Cross is manufactured according to the requirements of EN-GJMB-300-6 with tensile strength min 300 N/mm2 and elongation min 6%. This gives the iron more strength while allowing it to keep ductility. It . Though it can have any % of carbon from 2% - 6.67%, but practically it is in between 2% - 4%. The strength of a material is its ability to withstand an applied load without failure or plastic deformation. Industry Standard. Malleable cast iron besides less sensitive to cracking has a range of features, such as higher values of tensile strength, rupture strength and elongation, and high resistance to wear and strong shock resistance. - Good resistance for abrasion. The castings should be heat-treated. Ultimate tensile strength is often shortened to "tensile strength" or even to "the ultimate." Malleable iron contains more blunt boundaries opposed to flakes, which eliminates the stress concentration problems that grey cast iron can cause. The desired formation of temper carbon in malleable irons has two basic requirements. . Process Performance The difference between malleable and ductile iron was toted to be strength. EE brand pipe fitings are made of White Heart Malleable Iron. With their extensive history and tradition, malleable cast iron fittings are the most . Characteristics of carbon steel pipe The amount of carbon contained in steel determines its properties. Exposed to a strong magnetic field, any piece of iron can be magnetized. Hardness requirements They are typically found in steel-to-steel . Such iron is said to have a 'mottled' appearance. Ductile iron has some good mechanical properties than other cast irons. 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 Ductile cast iron Send your message to us: Aside from these properties and durability, EE white heart malleable iron fittings also has the following characteristics: - Excellent strength and plasticity. Our malleable iron pipe fittings can be used in a wide variety of applications involving steam, air, water, gas, oil, and other fluids. Current edition approved May. 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 highest stress that a material can withstand for a given number of cycles without breaking Melting Point. White Heart Malleable Iron are stronger and have more plasticity than black heart malleable iron: White Heart cast iron: Tensile strength is 350-450 Mpa (Hardness is approximately 220 HB) Black Heart cast iron: Tensile strength is 300-350 Mpa (Hardness is approximately 170-190 HB) So . Malleable cast iron fittings are designed according to the EN 10242 standard and available in black and hot-dip galvanized versions. They are used to make parts where forging is expensive like, brake supports, hubs of wagon . It has High strength; Malleable cast iron; They are made malleable with the help of annealing. they are blackheart malleable iron whiteheart malleable iron pearlitic malleable iron Used to make Railway rolling stock, brake supports, door hinges, locks. It is used to make machine parts for which steel forgings will be expensive and must have a fair degree of mental accuracy. The malleable cast iron is ductile and may be bent without breaking or fracturing the section. The silicon pushes part of the carbon out of the solution, forming graphite flakes.
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