The other standards cover austenitic and special ductile iron applications. It segregates strongly to grain boundaries and increases hardenability. Author see all formats and editions hide other formats and editions. Colour micrographs are produced by first etching with 2% nital, followed by open air heat treatment of the metallographic sample at 270 o c for 3 h. Numerous and frequentlyupdated resource results are available from this search. Therefore it need a free signup process to obtain the book. Ductile iron society visits qit sorel plant of rio tinto see photos from the tour view ductile iron related 15400 pearl road, suite 234. Ductile iron pipe were introduced to the market in 1955. Ductile iron is mainly used in the automobile industry such as trucks, tractors and oil pumps.
American ductile iron flanged fittings ansiawwa c110a21. Ductile irons form ferrite much more easily than gray irons even with the same alloy content. Our new furnaces allow us to produce high quality, costeffective castings. Iso 1083 5007 is a nodular iron with a mostly pearlitic and smaller amount of ferrite microstructure. Comparison of the mechanical properties of steel and. These wind turbines require several hsdic 15 to 25 t of ductile iron per mw with castings weighing from 0. Ductile iron is a specific type of cast iron in which the free graphite is in the shape of nodules or spheroids. About the ductile iron pipe research association dipra from its inception more than 100 years ago, the ductile iron pipe research association dipra has provided accurate, reliable, and essential engineering information about cast iron and now ductile iron pipe to a wide variety of utilities and consulting engineers. Special test methods were employed to simulate typical conditions of reciprocating sliding wear with and without abrasive contaminated lubricant for. The mcwane pipe economy offers our complete catalog and reference book for engineers and buyers. For generations, mcwane has been a global leader in water distribution and infrastructure that are integral to the function and development of plumbing. Comparison of ductile iron vs steel penticton foundry. Note that cementite fe 3c can still nucleate at the eutectic.
Below is the available product literature for our ductile iron pipe and corresponding joint types. Other names for ductile iron are nodular iron or spheroidal graphite iron. It contains spheroid graphite in the as cast condition, through the addition of nucleating agents such as cerium or magnesium to the liquid iron 2, 4. Gray and ductile iron foundries in canada profile canada. In fact ductile cast iron provides a wide spectrum of mechanical. The youngest but most successful member of a truly ancient family, ductile iron has suffered from an abundance of myths and a lack. Manifolds, water cooled marine exhaust for gas and diesel engines, gray and ductile iron castings, grates, dust collector cones, mining castings, stainless and alloy steel and pumps. Ductile iron usually hypereutectic is produced by treatment with magnesium immediately prior to pouring castings see fig.
Other bainitic and martensitic structures may be formed by heat treatment processes such as quenching and tempering and austempering. Molten ductile iron flows easily into small areas in a casting mold, giving sharp detailing to decorative cast iron designs. The first mcwane foundry, mcwane pipe, was organized in 1921 in birmingham, alabama. Metal casting sioux city foundry, south sioux city, nebraska. Annealed cast ductile iron can be bent, twisted or deformed without fracturing. Low temperature impact strength of heavy section ductile. En 1563 new generation ductile irons solid solution. The title describes both the contents and the objective of this book. This study was undertaken to evaluate the wear resistance of different grades of ductile iron as alternatives to high tensile strength alloyed and inoculated gray irons and bronzes for machine tool and highpressure hydraulic components. It only gives a modest increase in hardenability see figure 2. Ductile iron consists of nodular graphite that give it flexibility. Ductile iron iii gating and risering has formed the basis for this present seminarlecture notes book.
Ductile iron 805506 is one grade in a family of many. The nodules strengthen the material in a couple of ways. Controlling the chemistry and the charge makeup based on the type of iron and the section size is very important by james d. Since then, weve grown our line of coupling to cover virtually any pipe joining situation. Ductile iron, also referred to as nodular iron or spheroidal graphite iron, was patented in 1948. You can think of the graphite as little globes instead of the flake structure that is typical with your regular gray iron. Ductile iron structure, properties and applications.
Ductile iron handbook paperback january 1, 2010 see all formats and editions hide other formats and editions. Reliable information about the coronavirus covid19 is available from the world health organization current situation, international travel. Ductile iron pipe in the developed world is normally manufactured exclusively from recycled material including scrap steel and recycled iron. Jerry regula, national product engineer, mcwane ductile. Ductile iron is a specific type of cast iron which has an addition of magnesium to it to make the graphite in it nodular. Chapter 6 ductile iron production of ductile iron ductile iron, also known as spheroidal graphite s. Price new from used from hardcover, 2004 please retry. Analysis was done on ductile iron with carbon equivalent ranging from 4. However, formatting rules can vary widely between applications and fields of interest or study. A metallographic study of the porosity and fracture behavior in unidirectionally solidified end chill castings of 319. Oclcs webjunction has pulled together information and resources to assist library staff as they consider how to handle. Pure metals solidify with a solidification front that is very well defined and a clearly delineated solidliquid interface.
Effect of basic chemical element in sgi ductile iron. This handbook from asm covers the entire spectrum of one of the most widely used and versatile of all metals. Sioux city foundry has been a continuously operating cast iron foundry for over 140 years. We produce all standard grades of ductile iron including 654512, 805506, and 1007003 as well as austempered ductile iron, and customer specific grades. This promotes the precipitation of graphite in the form of discrete nodules instead of interconnected flakes fig. Solution strengthened ferritic ductile irons ssf ssf cast iron is a high strength ductile cast iron quality alloyed with silicon between 3. Pdf microshrinkage propensity in thin wall ductile iron. G cast iron is defined as a high carbon containing, iron based alloy in which the graphite is present in compact, spherical shapes rather than in the shape of flakes, the latter being typical of gray cast iron. Because of ductile irons great strength, durability, and additional wall thickness above the controlling net thickness 0. Metal technologies currently has the capacity to produce 110,000 tons of ductile iron each year. Ductile iron pipe and fittings download pdfepub ebook. It combines the physical strength of mild steel with the long life of gray cast iron.
Micrograph of ductile iron steel there are currently thousands of steel compositions available in the world. Today, mcwane ductile continues to supply ductile iron pipe used in water infrastructure found in cities across america. The base iron type typically has high carbon equivalent value cev and very low sulfur. It is a comprehensive summary of data describing the engineering properties of ductile iron. If you have a question regarding pricing, please contact us clow valve list price book. Difference between ductile iron and cast iron difference. Ductile cast iron solidification is characterised by a very thin solidified skin and appearance of different phases.
Ductile iron what ductile iron is ductile iron is a family of cast graphitic irons which possess high strength, ductility and resistance to shock. Astm a536 805506 related standards sae j434c d5506. Thermal analysis of ductile iron casting intechopen. Cast iron bollards are made from highquality ductile iron, a tough alloy with superior castability. These special thickness classes were designated standard thickness classes by awwa ansi standard c150a21. The common defining characteristic of this group of materials is the shape of the graphite. Ductile cast iron frequently referred to as nodular or spheroid graphite iron is a recent member of the family of cast irons. Magnesium is added to the melt in the form of a master alloy. Ductile iron production now accounts for about 40% of all iron castings and is still growing.
Influence of pouring temperature on the microstructure in. Mullins, sorelmetal technical services the percentage of carbon, silicon, carbon equivalent ce and magnesium must be co rrect for the casting. If an iron alloy exceeds about 2% carbon, the carbon does not have to nucleate from decomposition of austenite, but instead, it can form directly from the melt by a eutectic reaction. History of ductile iron in the past 400 years cast iron has been used in every conceivable situation where strength and corrosion resistance were needed. Cast iron is mainly seen in the construction industry. It was keith millis who discovered ductile iron in 1943.
Below is the clow valve list price book for our valve and hydrant product offerings. The composition of the austenite affects the microstructure and subsequent iron properties, again because if. Graphite nodules are encased within an austenite shell. Including data on gray, ductile nodular, white, and high alloy irons, by charles f walton and a great selection of related books, art and collectibles available now at.
Ductile iron pipe typically will use magnesium in the manufacturing process. Astm a 536 is the most frequently used, covering the general engineering grades of ductile iron. For more information, please contact a marketing and specifications representative. Dixon l04 ductile iron series l pipe and welding fitting, quick release coupling with epdm gasket, 4 size x 412 pipe od 4. Dry sliding wear system response of ferritic and tempered. Sorelmetal ductile iron data published by rio tinto. These bonds have impact properties and endurance ratios equal to the base ductile iron figures 8.
Mechanical and structural properties of ductile cast iron. Ductile iron data for design engineers revised edition. High performance ductile iron powerbore cylinder sleeves. Continuous testing and field experience have brought the production and use of ductile iron pipe to maturity. Iron foundry benefits from new nodularizing process. Ductile iron is a high strength, tough material used in water and wastewater systems in all 50 states of the united states and in many other areas of the world. This catalog provides product information for users of pipe. Ductile iron class 50 ductile iron class 51 ductile iron class 52 ductile iron class 53 ductile iron class 54 ductile iron class 55 ductile iron class 56 asbestos cement astm c428 rcp astm c361 nonreinforced concrete pipe astm c14. In ductile irons, graphite is in the form of nodules rather than flakes as in grey iron. The sorelmetal book of ductile iron book, 2004 worldcat. Converting steel weldments to ductile iron castings. The outer skin is formed being very thin in ductile iron. The astm has issued in 1990 a new specification defining the properties of austempered ductile iron.
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 graphiterich cast iron discovered in 1943 by keith millis. Chemistry requirements are not specified in the astm a536. Search for library items search for lists search for contacts search for a library. For instance, the global installed wind turbines capacity has increased from about 10,000 to 127,000 mw. Strongsville,ohio publications located in strongsville, ohio, usa 446 billing address. To properly weld ductile iron its important to follow specialized weld procedures. Static mechanical properties of ferritic and pearlitic lightweight ductile iron castings. It has mechanical properties comparable to low alloy steels. In 1974, romac introduced the 501 ductile iron coupling the first coupling in the industry with colorcoded end rings and interchangeable gaskets. Ductile iron is not a single material but part of a group of materials which can be produced with a wide range of properties through control of their microstructure. In producing ductile iron in coreless induction furnaces, charge component selection and other production considerations must be treated with extreme care to ensure that the chemistry and resultant physical and mechanical properties of the finished casting meet all customer specifications. In ductile iron the free graphite is in the form of discrete nodules or spheroids.
Sorel, canada and richards bay minerals richards bay, south africa. Low temperature impact strength of heavy section ductile iron. Select the pdfs you want to add to your submittal package from the list below, or click each link for individual pdfs. Guidelines installation guide for ductile iron pipe. Flanged ductile iron fittings in 24 inch and smaller sizes may be. Its strength, toughness and ductility duplicate many grades of steel and far exceed those of standard gray irons. This alloying level of silicon is constant per ssfgrade, unlike. From manhole covers to fire hydrants, water pipe, sewer pipe, bridges and buildings, cast iron has weathered the elements and has survived the test of time. Manganese is generally a pearlite formerstabilize r, and forms carbides. Ductile iron pipe, a product of advanced metallurgy, offers unique properties for conveying water under pressure, and other piping uses.
After a decade of intensive development work in the 1950s, ductile iron had a phenomenal ninefold increase in use as an engineering material during the 1960s, and the rapid increase in commercial application continues today. Cast iron offers the design engineer a lowcost, highstrength material that can be easily cast into a wide variety of useful, and sometimes complex, shapes. Sorelmetal is an ironcarbon alloy containing very low concentrations of manganese, phosphorus, sulphur and other undesirable elements produced at the metallurgical complexes of qit fer et titane inc. The average damping capacity for ductile iron is 6. Cast iron is an iron carbonsilicon alloy, containing from 2 to 4 percent carbon and 0. Welcome,you are looking at books for reading, the ductile iron pipe and fittings, you will able to read or download in pdf or epub books and notice some of author may have lock the live reading for some of country. Ductile iron pipe is also available with thicknesses greater than pressure class 350. Sioux city foundrys metal casting department utilizes over 125,000 sq. The orange sheet in the back of this book gives more information on specifications and properties. 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. I thought you might be interested in this item at 758690202 title. One of the oldest and most experienced foundries in the united states, sioux city foundry is a modern, ductile, austempered ductile and nihard cast iron foundry. Ductile iron has superior shock absorption to steel. Cast iron foundry sioux city foundry, south sioux city.
Sufficient magnesium is added to the liquid iron to give a residual magnesium content of about 0. If it available for your country it will shown as book reader and user fully. Spheroidal graphite cast iron sg iron is the most preferable member of cast iron. The sorelmetal book of ductile iron hardcover 2004. A galvanic series showing less noble anodic metals to the left and more noble cathodic metals to the right. The ductile iron societys objective is to advance the technology, art, science of ductile iron production and to disseminate all such information to the members. The matrix may be ferritic, pearlitic or a mixture of the two.