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Topic: Grey Iron

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	Iron - Wikipedia, the free encyclopedia
		Iron is notable for being the final element produced by stellar nucleosynthesis, and thus the heaviest element which does not require a supernova or similarly cataclysmic event for its formation.
		A newer variant of grey iron, referred to as 'ductile iron' is specially treated with trace amounts of magnesium to alter the shape of graphite to sheroids, or nodules, vastly increasing the toughness and strength of the material.
		A class of non-heme iron proteins is responsible for a wide range of functions within several life forms, such as enzymes methane monooxygenase (oxidizes methane to methanol), ribonucleotide reductase (reduces ribose to deoxyribose; DNA biosynthesis), hemerythrins (oxygen transport and fixation in marine invertebrates) and purple acid phosphatase (hydrolysis of phosphate esters).
	en.wikipedia.org /wiki/Iron (3000 words)

	Cast iron - Wikipedia, the free encyclopedia
		It is made by remelting pig iron, often along with substantial quantities of scrap iron and scrap steel, and taking various steps to remove undesirable contaminants such as phosphorus and sulfur, which weaken the material.
		White iron is too brittle for most uses, but with good hardness and abrasion resistance and relatively low cost, it finds use in such applications as balls for rolling-element bearings, the wear surfaces (impeller and volute) of slurry pumps and the teeth of a backhoe's digging bucket.
		White cast iron can also be made by using a high percentage of chromium in the iron; Cr is a stong carbide-forming element, so at high enough percentages of chrome, the precipitation of graphite out of the iron is suppressed.
	en.wikipedia.org /wiki/Cast_iron (999 words)

	Grey Iron
		Grey irons are brittle, and have little plastic deformation and thus the yield strength and tensile strengths are almost identical.
		Grey irons with a ferrite and graphite structure require a long soak at austenitising temperatures This is because there is not enough carbon in the ferrite to produce a fully martensitic structure and carbon must be taken into the matrix by dissolving free graphite.
		Grey irons have been used extensively in the past for pipes for water and sewage as they are resistant to attack by alkalis, seawater and some acids.
	www.azom.com /details.asp?ArticleID=783 (1275 words)

	[No title] (Site not responding. Last check: 2007-10-22)
		Compacted graphite iron (CGI), where the graphite particles are elongated as in grey iron but are shorter and thicker and have rounded edges and irregular bumpy surfaces.
		The grey iron terminology therefore refers to five different types of grey iron ranging from Type A to Type E. Type A graphite denotes long graphite flakes and is preferred in most applications while Types B through E are degenerate and result in lower strength.
		Grey iron is defined by reference to the different types A through E, for example, 90 % Type A plus 10 % Type B. Ductile iron is classified in terms of percent nodularity, that is, what percent of the graphite particles are present as perfect nodules.
	www.wipo.int /cgi-pct/guest/getbykey5?KEY=01/38593.010531&ELEMENT_SET=DECL (2799 words)

	Grey Iron
		In grey cast iron the free graphite is in the form of flakes.
		The strength of a grey cast iron varies with the section size of the casting due to solidification effects: This is referred to as ‘section sensitivity‘.
		Classic applications for grey cast iron are engine cylinder heads and blocks utilising the thin and complex cast sections for water cooling passages and the damping characteristics for quietness.
	www.thdick.co.uk /grey.htm (238 words)

	Cast irons (Site not responding. Last check: 2007-10-22)
		The carbon equivalent (CE) of a cast iron helps to distinguish the grey irons which cool into a microstructure containing graphite and and the white irons where the carbon is present mainly as cementite.
		However, in grey cast irons, if the cooling rate through the eutectoid temperature is sufficiently slow, then a completely ferritic matrix is obtained with the excess carbon being deposited on the already existing graphite.
		Grey cast irons are softer with a microstructure of graphite in transformed-austenite and cementite matrix.
	www.msm.cam.ac.uk /phase-trans/2001/adi/cast.iron.html (1527 words)

	Ferrous Metal
		The principal raw material for all ferrous metals is pig iron which is obtained by smelting iron ore, with coke and lime stone, in the blast furnace.
		The cast iron is obtained by remelting pig iron with coke and limestone in a furnace known as cupola.
		It is primarily an alloy of iron and carbon.
	www.nedians.8m.com /ferrous.html (1391 words)

	CASTING
		Grey Iron Foundry : The Grey Iron Foundry is well equipped to manufacture castings weighing upto 30 Tonnes Single Piece.
		Grey Iron Castings upto strength 260 N/mm2 upto weight range of 30 Tonne as cast weight.
		Grey Iron Castings with strength beyond 250 N/mm2 upto weight range of 3 to 5 Tonne.
	www.thesimplex.com /casting1.htm (196 words)

	Metallurgy (Site not responding. Last check: 2007-10-22)
		The problem with white iron is that it is very brittle because the carbon exists as iron carbide instead of pure carbon.
		Iron carbide (Fe3C) is a hard and brittle compound sometimes referred to as cementite.
		Grey iron (standard cast iron) delivers only moderate strength with almost no elongation because the excess Fe3C flakes act as stress raisers (they make cast iron easy to crack).
	www.atlanticvalve.com /american/4000/metal.html (639 words)

	RABBIT - LoveToKnow Article on RABBIT (Site not responding. Last check: 2007-10-22)
		The chief variety is the common grey or cottontail (Lepus fioridanus).
		The silver grey is a uniform-colored breed, the fur of which is a rich chinchilla grey, varying in depth in the different strains.
		From the greater value of the fur, silver greys have been frequently employed to stock warrens, as they breed true to color in the open if the ordinary wild rabbits are excluded.
	www.1911ency.org /R/RA/RABBIT.htm (1017 words)

	Iron, steel & metal manufacturing engineering - Class 60 grey iron?
		These are usually pearlitic grey irons so Grade 60 should be OK. I would insist on a microscopic examination of appropriate samples to ensure that graphite is OK and that the matrix contains no ferrite or carbides.
		Class 60 gray iron might be a difficult animal to produce - class 50 is usually at the top end of the gray iron as cast range.
		Higher tensile strength gray irons need low carbon equivalent iron with supplementary alloying to reach the high tensile properties and these are prone to carbides especially in thin sections such as sleeves.
	www.eng-tips.com /viewthread.cfm?qid=45936 (436 words)

	Ductile Iron
		In ductile iron the free graphite is in the form of discrete nodules or spheroids.
		The discrete form of the graphite nodules in comparison to the planes of weakness of the graphite flakes in grey iron means that the properties of ductile iron are determined more by the matrix of the material than the form of the graphite.
		Ductile iron castings have production and machining cost advantages over steel fabrications, forgings and castings within the limitations of the ductility and impact properties and have strength to weight advantages over grey iron castings where breakage is a problem.
	www.thdick.co.uk /ductile.htm (797 words)

	: : Electrosteel Castings Limited - Ductile Iron Pipes - Advantages : :
		In the initial microstructure of grey cast iron, graphite was in the form of flakes but assumed a spherical/nodular shape after the inclusion of the magnesium.
		The mechanical properties of ductile iron as compared to gray cast iron show superior tensile strength, yield strength, ductility and impact resistance.
		The use of ductile iron has grown at a rapid rate over the past fifty years.
	www.electrosteel.com /products/ductpipes/advantages.htm (157 words)

	Dura-Bar® Continuous Cast Iron
		Continuous cast Grey Irons contain flake graphite in matrix structures that range from all pearlite to pearlite plus ferrite.
		Continuous cast Ductile Irons contain nodular graphite in a matrix of pearlite and ferrite.
		The ratio of ferrite to pearlite in the matrix varies in each of the three grades in order to produce the required tensile and yield strengths and elongation properties.
	www.anchormetals.com /castiron.htm (186 words)

	KP Metallurgical Casting Co. Limited. ISO Iron Foundries, Iron Cstings, Specialist in Grey iron, SG iron, Malleable, ...
		We produce a range of grades in grey, ductile, malleable iron using the "ISO 9002." This special process produces materials with superior mechanical properties and excellent machinability.
		Dependant upon the volume and life expectancy materials used are wood, resin, aluminium, cast iron and gunmetal.
		A test bar from every heat of grey iron and every ladle of ductile iron is poured in accordance with ISO 9002 standards.
	www.kpmetallurgical.co.uk /aboutus1.html (695 words)

	Metal and Metallurgy engineering - Grey Iron
		For normal cast iron, slow cooling (as in thick sections) produces a coarse open-grained, low strength structure, whereas fast cooling (as in thin sections) results in a hard, brittle, unmachinable structure.
		If mehanite iron is your study subject,look at old issues of BCIRA a lot of references can be obtained.
		Also meehanite iron is essentialy a flake graphite iron having TypeA graphite in a pearlitic matrix.
	www.eng-tips.com /viewthread.cfm?qid=76044 (671 words)

	Wagga Iron Foundry - Welcome
		Wagga Iron Foundry have been at their current location for well over 50 years and specialise in the manufacture of medium to heavy grey, Ni-hard and ductile iron castings.
		They also occasionally cast in brass and aluminium, while services are tailored to meet a broad spread of applications in the civil, commercial, engineering, mining, automotive and agricultural industries.
		In addition to the Wagga Iron range, the foundry also designs and manufactures castings to client specifications.
	www.ironfoundry.com.au (100 words)

	grey iron casting by ISO 9002 company
		Grey Iron Casting at Rajasthan Udyog, Jodhpur Division
		We manufacturer & export heavy and large machined / proof machined / rough gray iron castings weighing 30.0 to 7500 kgs per piece.
		Gay iron castings are manufactured as per the international standards
	www.rajasthanudyog.com /grey_iron_casting.htm (459 words)

	Castings from grey iron and non - ferrous metals
		Castings from grey iron and non - ferrous metals
		Grey iron profiled shapes are meant for joining tubes with other profiled shapes and fittings.
		The manufacturing of castings is done according to sample, drawing or the model the client has delivered.
	www.sever.co.yu /english/products/odlivci02.html (339 words)

	12090. Zinc nickel on a grey iron substrate ???
		Zinc nickel on a grey iron substrate ???
		Anybody knows if it would be possible to apply a zinc nickel coating in a grey iron component, for instance a brake caliper.
		The question, I believe, is about the hydrogen overvoltage of the carbon particles in the cast iron.
	www.finishing.com /120/90.shtml (125 words)

	Sugar Hill Records - The Best in Roots Music (Site not responding. Last check: 2007-10-22)
		Grey's reworked version of the Queen classic Bohemian Rhapsody, from [Iron Flowers], is available from iTunes.
		Embracing different eras and different styles as readily and impeccably as she has, the only thing that fans have come to expect from a new Grey DeLisle album is the unexpected.
		But it’s true, they all sound so different!” A DVD documentary on the making of Iron Flowers is also on the immediate horizon, and DeLisle plans to do her most extensive touring yet in support of the album.
	www.sugarhillrecords.com /catalog/pagemaker.cgi?4000 (1167 words)

	DCM Engg to hike grey iron castings capacity - Sify.com
		DCM Engg to hike grey iron castings capacity - Sify.com
		DCM Engg to hike grey iron castings capacity
		Ropar (Punjab): DCM Engineering Ltd has firmed up plans to increase its grey iron castings capacity to 75,000 tonnes per annum from the present 50,000 tonnes by 2007.
	sify.com /finance/fullstory.php?id=13954567 (479 words)

	Sackin Metals Recycling - Properties of Grey Cast Iron
		This page contains mechanical property reference data for various grey cast irons and includes Tensile strength, Compressive Strength, Shear Modulus of Rupture, Tensile Modulus of Elasticity, Torsional Modulus of Elasticity, Endurance Limit and Brinel hardness information.
		(The American Society for Testing Materials (ASTM) numbering system for grey cast iron is established such that the numbers corespond to the minimum tensile strength in kpsi.
		Thus an ASTM no. 20 cast iron has a minimum tensile strength of 20 kpsi.
	www.sackinmetals.com /properties_of_grey_cast_iron.htm (119 words)

	Grey Iron Casting Foundry from India
		All the required tests for Grey Iron Casting are done in our research laboratory with properly calibrated equipment and qualified operators.
		Vasantham grey iron castings are priced in par with the industry.
		For example a smaller grey iron casting such as compressor spare is often stress relief annealed to maintain very close operating clearances in the finished compressor.
	www.vasanthamfoundry.com (242 words)

	pastemusic.com: Grey DeLisle
		The new fl tee from Grey DeLisle features a green design and is a one size shirt.
		country siren Grey DeLisle is a powerhouse vocalist and it’s most apparent in the live arena, where she works the arrangements of her emotionally rich material with all the finesse possible...
		A DVD documentary on the making of Iron Flowers is also on the immediate horizon, and DeLisle plans to do her most extensive touring yet in support of the album.
	www.pastestore.com /artist/10504 (1806 words)

	Grey Iron Castings and Gray Iron Casting Services
		Grey Iron Castings and Gray Iron Casting Services
		Grey iron castings and gray iron casting services including iron castings, ductile iron castings, alloy casting, grey iron casting, and malleable iron castings.
		Keywords: [site = 1] grey iron castings, gray iron castings, iron castings, ductile iron castings, alloy castings, grey iron casting, malleable iron castings, grey iron, ductile grey iron casting, cast grey iron, carbon steel castings, non-ferrous metal castings, ni-hard castings.
	www.aecinfo.com /1/company/08/45/28/company_1.html (105 words)

	Castings PLC. Suppliers of Ductile, Malleable & Grey Iron Castings. All Electric Melting. Disamatic Green Sand ...
		There is one rare bit of good news from the UK motor industry.
		Castings PLC are a long established Foundry and Machining Group based in central UK but supplying worldwide.
		We supply Ductile, Malleable and Grey Iron Castings up to 25kgs to all international specifications including Si.Mo and A.D.I. We offer raw, coated or finished machined parts in high and low volumes.
	www.castings.plc.uk (145 words)

	FE Myers Casting Center
		The present Casting Center was dedicated in 1975 to meet the casting requirements for a wide variety of Myers pumps, and to offer additional capacity to other O.E.M. companies.
		The Casting Center, located in north central Ohio, offers grey iron and ductile iron castings in a variety of grades from CL20 and CL30 for grey iron and SAED-4018 to D-7003 for ductile.
		Castings can be produced in sizes ranging from 1 pound up to 250 pounds.
	www.femyerscastings.com (118 words)

	Mesa Castings, Cast Iron Foundry metal alloy products - Grey Iron Product 1
		Mesa Castings is changing are web site please allow us time to make these changes by requesting information if you do not see something listed.
		Annealing softens Ductile Iron by producing a carbide-free, fully ferritic matrix.
		Table 7.1 Recommended practices for annealing Ductile Iron castings.
	www.mesacastings.com /product_1.htm (153 words)

	DECATUR FOUNDRY : Awards & Recognition (Certified Quality Supplier Casting Vendor Iron Foundry)
		Decatur Foundry grey iron gray ductile iron prototype General Electric Rockwell Emerson Toshiba Siemens
		We actively strive to continue Quality Service improvements; one indication is service awards received from our Customers.
		iron foundry foundries commerical castings custom castings Decatur Foundry grey iron gray iron
	www.decaturfoundry.com /recognition.html (207 words)

	Ductile Iron / Grey Iron Castings and Fittings
		We can supply all kinds of ductile iron fittings and grey iron fittings
		We can supply all kinds of cast iron hydrants, both the completed hydrants and the individual components
		We can supply all kinds of ductile iron and grey iron ornamental castings and gratings
	shungji.en.alibaba.com /group/50077377/Ductile_Iron_Grey_Iron_Castings_and_Fittings.html (254 words)

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