Certification bs2789 42012 s g iron is available with a certificate of conformity, please request when placing any orders. Because of metallurgical sensitivity of ductile iron, major emphasis is focused on metal controls necessary for metallurgical reliability. S g iron is commonly available in 3 metre bar lengths and can be sawn to cut lengths or sawn blanks to your requirements. Sg iron is also known as ductile cast iron, nodular cast iron, spheroidal graphite iron and. Sg iron castings in grade 40012, 5007, 6003, 7002, ductile iron castings, nodular iron castings, machined components, crank shaft, connecting rod, cam shafts. Examples of the use of ncis are automotive parts such as camshafts, crankshafts, water pump housings, valves and steering articulations3,4.
The most important and distinguishing microstructural feature of all ductile irons is the presence of. The correlation between tensile properties, impact toughness, hardness and pearlite content is investigated. The ductile iron free from the carbide precipi tates showed elongation higher by maximum 2 %. Mechanical properties shown are typical and may vary subject to the size and section of this sg iron grade. She conducted projects related to di cooling curves, carbide free thinwall ductile iron and more. Iso 1083 2004 standard for ductile iron material grades. Information to be supplied by the purchaser while ordering grey iron castings according to this specification is given in annex d. The metallurgy and tensile mechanical properties of thin. Sg iron bar delivered nationwide by west yorkshire steel. Previous works 1, 2 on ductile cast iron showed that the main factors affecting. Temper graphite results from a solidstate reaction malleabilization.
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. As for the previous version, please refer to iso 1083 1987. 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. Low temperature impact strength of heavy section ductile iron castings. Astm a536 ductile iron castings tensile requirements no. Mechanical and microstructural characterization of nodular.
This grade of iron was developed over 60 years ago and in the usa. Bs2789 grade 42012 sg iron bs2789 grade 42012 sg iron stockholders and suppliers, delivering to the whole of the uk. For the benefit ofthe purchaser, typical properties of grey cast iron have been added in annex c. There is very little difference in machinability between this grade and 654512 and is rarely used because of the added cost of heattreating. Metallography and microstructures of cast iron janina m. Noise and vibration damping are good in this grade. Iron castings are extensively used because of their high strength, ductility, shock as well as wear resistance properties and easy machinability. In grey iron the free graphite forms as thin flakes which run through the. The pure ni electrode showed graphite diffusion in the bead with a. Sg iron castings, ductile iron castings, manufacturer. It is a comprehensive summary of data describing the engineering properties of ductile iron. Weldability of spheroidal graphite ductile cast iron using. Durabar is stocked in several grades of ductile iron and gray iron, as well as additional nonstock grades which can be ordered in volume quantities from our distributors.
As the name ductile iron suggests this grade of cast iron has a degree of ductility. Astm a536 805506 ductile iron, sg iron chemical composition, mechanical and physical properties astm a536 805506 is a special ductile cast iron grade. Elwakil1,4 abstract waterworks fittings and accessories are important applications for. Gray iron and ductile iron are differentiated by the type and structure of the carbon present in them. Sg 7002a, sg 6003a, sg 5007a, sg 40015a, sg 400 i8a and sg 35022a. The following six grades of spheroidal cast iron for this category are. Extensive experimental work was conducted to establish the conditions required to produce carbide free sound thin plates in spheroidal graphite sg iron and to evaluate their tensile mechanical properties. These data are indicative and can be changed at any time without prior notice. Fonderie saguenay specialise in producing engineering components cast from gray iron and ductile iron. Our engjs6003 sg iron ductile iron is supplied conforming to bs en 1563 and can be delivered throughout the uk. On the other hand, steels and malleable iron generally require heavy risering. Pdf spheroidal graphite sg irons with a variety of matrixstructure have. The title describes both the contents and the objective of this book.
Metallurgy of cast irons outoffurnace processing of. Analysis of tensile strength and hardness of is 5007. Properties of spheroidal graphite ductile cast iron. The low cost production of ductile cast iron, its mechanical properties and low cost. Our dandong foundry could produce this material, and herein, we share its chemical co properties. Ductile cast iron behaves elastically over a considerable stress range in both tension and compression. Spheroidal graphite cast iron grades, properties, composition, microstructure, density and castings. Astm a536 ductile iron castings tensile requirements.
Iso 1083 2004 is the latest standard for ductile iron material grades, mechanical and chemical properties. Ductile iron data for design engineers revised edition. The correlation between tensile properties, impact. Engjs6003 is an sg iron grade containing graphite nodules or spheres, spheroidal graphite. Grey irons often do not require risers to ensure shrinkage free castings. Therefore, sg cast iron has completely same grades and all mechanical and chemical properties as ductile iron. Ductile iron what ductile iron is ductile iron is a family of cast graphitic irons which possess high strength, ductility and resistance to shock. Mechanical and structural properties of ductile cast iron. However, total casting quality requires sound castings free of shrinkage, porosity and. The main characteristic of this material is the structure of the graphite. Previous works 1, 2 on ductile cast iron showed that the main factors affecting the mechanical properties are metallurgical structures. These materials are described and typical properties such as tensile strength, hardness, elongation and proportional limit are provided for the various grades and specifications.
Austempered ductile iron adi is finding an ever increasing worldwide market in the automotive and other sectors. Since the cast iron is a brittle material, therefore, it cannot be used in those parts of machines which are subjected to shocks. It offers a range of mechanical properties superior to those of other cast irons, and shows excellent economic competitiveness with steels and aluminum. Mechanical properties dependency of the pearlite content of ductile. The properties of cast iron which make it a valuable material for engineering purposes are its low cost, good casting characteristics, high.
Standard flake iron fg high strength flake iron hs. The youngest but most successful member of a truly ancient family, ductile iron has suffered from an abundance of myths and a lack. Mechanical properties of sgiron with different matrix. Iron balance chemistrytypical ranges subordinate to mechanical properties en1563gjs40015 ggg40 continuously cast spheroidal graphite iron characteristics offers superior machinability combined with optimal impact, fatigue, electrical conductivity and magnetic permeability. The differences between ductile iron and gray iron. The rounded graphite nodules produces a more ductile cast iron that inhibits the formation of cracks. Effect of graphite nodularity on mechanical properties of ductile iron for waterworks fittings and accessories a. During the last years the industrial use of ncis iron has been increasing and many investigations on the characterization and improvement of its mechanical properties have been developed2. The sample matrix was niobium free, probably due to its low niobium. For a quick summary, scroll down to the bottom of the blog and check. In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to. Pdf mechanical properties of sgiron with different. Mechanical properties of sgiron with different matrix structure article pdf available in journal of materials science 365. Annealed cast ductile iron can be bent, twisted or deformed without fracturing.
However, total casting quality requires sound castings free of shrinkage. Recent development of ductile cast iron production. West yorkshire steel are suppliers of this spheroidal graphite iron sg iron specification as continuously cast bar. The current iso standard for ductile iron, iso 1083, specifies grades either by tensile strength, proof stress and elongation or. The type and distribution of graphite influences most of the properties and results in the free machining characteristics, excellent noise and vibration damping, thermal conductivity and wear. Ales hanus this study material has been created as a part of the development program called creation of electronic study material for the study programs of fmme in 2008 ostrava 2014. The pearlite content is varied from 0 to about 95 per cent by the use of different heat treatment processes. West yorkshire steel are suppliers of round bar and a limited size range in flat bar. The apparent variation in the properties with the pearlite level reveals the remarkable. Effect of graphite nodularity on mechanical properties of. The present project profile envisages the production of s. C ountry grade 604018 grade 654512 grade 805506 grade 1007003 grade 1209002 1 tensile. It has comparatively high te nsile strength, and also high is a good cast iron material.
Mechanical and microstructural characterization of nodular cast. The high ratio of performance to cost which they offer to the designer and end user makes them to be used extensively for industrial applications. Cast irons specifications for gray iron and ductile irons. 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. Spheroidal graphite sg irons with a variety of matrixstructure have been produced. As an s g iron it is available in diameters and a limited range of flat sections. The purpose of standard specifications for ductile iron castings is to provide a body of information which can be used with confidence by both designer and foundry to select, define and agree upon a set of specific properties which will ensure that the castings meet the intended use of the designer. Comparative analysis of the properties of the nodular cast iron with. Find details of companies offering sg iron casting at best price. Sg, compacted vermicular graphite cg, and temper graphite fg. Since poor nodularity can cause more drastic loss of properties than in other metals, nodularity must be controlled. Graphite free graphite bearing pearlitic white iron martensitic white iron nihard highchromium iron ferritic.
Metallurgy of cast irons outoffurnace processing of molten cast iron study support doc. Continuous cast iron products durabar products durabar. The question, of course, is which one is right for your project. Studies you might also like similar terms related to the studies category not able to find full form or full meaning of sg iron may be you are looking for other term similar to sg iron. K abstractaustempered ductile iron adi is replacing steel and it is finding applications in agriculture, mining construction and automotive sector due to its superior mechanical properties and. Pdf mechanical properties of sgiron with different matrix structure. Sg iron is also known as ductile cast iron, nodular cast iron, spheroidal graphite iron and spherulitic cast iron. Before we look at possible answers, lets examine some of the key differences between the two cast irons. Abstract weldability of spheroidal graphite ductile cast iron was established using a cheap nife and a high purity ni electrode.
1537 452 726 775 542 726 295 1061 1140 1491 1078 1522 51 1384 1096 524 1301 1368 771 716 1094 1500 1403 1235 563 667 906 316 1101 500 279 345 876 227 1160 834 483 885 1198 428 1188 850