The basics of stellites in machining perspective semantic scholar. Stellite alloys are available in many different grades chemical compositions and several different processes or methods of manufacture. Supplier data talonite a cobalt chromium alloy carbide. Pdf wear characteristic of stellite 6 alloy hardfacing layer by. Delamination failures of stellite hardfacing in power. Ams 5894 wear resistant cocrw cobalt 6b is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. Industries often specify alloys by a uns designation, unaware that such alloy specifications only address issues of chemical composition, not corrosion or heat resistance. Alloy 6b uns r30016 ams 5894 description alloy 6b is a cobaltbased alloy with great wear, erosion and abrasion resistance. Tensile strength is 758 mpa, yield stress is 655 mpa, youngs. Stellite 1 stellitetm 1 is a hardfacing alloy possessing excellent abrasion and corrosion resistance for applications such as pump sleeves, rotary seal rings, wear pads, expeller screws and bearing sleeves. Hy s6stellit 6uns r3006ams 5387c2001 is the most widely used of the wear resistant cobaltbased alloys and exhibits good allround performance. Wholesale stellite 6 stellite 6 manufacturers, suppliers.
The name of the company was kept in place until 1963, when it was renamed the stellite division of the union carbide company 1. Stellite 6k is excellent for some uses and is a poor performer for others. Lubricity, corrosion resistance, mechanical properties and environmental performance are covered. It retains its hardness at temperatures in excess of 760c 1400f. Influence of cutting parameters and tool wear on the. Some of the main advantages that stellite 6b cobalt chromium alloy provides includes. Carbon steel contact parts with stellite tipped rotor. Stellite 6 was deposited onto a 4140 bar using a plasma transfer arc pta system and machinability was assessed on the basis of surface roughness. A comparative study for wear resistant of stellite 6. Gaulin homogenizer model 100 djf4 8ssx size 3 painted frame 2 stage manual valve assembly 34 plungers 8,000 psi stellite seat poppet valve cylinder minimum capacity 50 gallons per hour. The cobaltbased stellite alloys are our most well known and. Retains mediocre edge for a long time, no point in polishing the edge, better off with coarse edge. Erosion test curves of stellite alloys 7 51 figure 215.
Properties of stellite 6 part fabricated by wire arc. Pdf on jan 1, 20, md shahanur hasan and others published stellites. The microhardness variation of machined surfaces of stellite 6 using. Pdf the microstructure and wear resistance of stellite 6 alloy hardfacing layer at two different temperatures.
Slightly harder than stellite 6b, but not a whole lot. Union carbide years 1920 to 1969 in 1920, the haynes stellite company was sold to union carbide where it remained for almost 50 years. Stellite is a family of completely nonmagnetic and corrosionresistant cobalt alloys of various compositions that have been optimised for different uses. The alloy currently most suited for cutting tools, for example, is stellite 100, because this alloy is quite hard, maintains a good cutting edge at high temperature, and resists hardening and annealing. Stellite alloy distributor in the usa a metal source, llc inventory consists of various stellite alloy grades in any size or form as indicated below. High wear resistance, but at low hardness its rather difficult to use. A wide variety of stellite 6 powder options are available to you, there are 235 suppliers who sells stellite 6 powder on, mainly located in asia. Corrosion materials is a global leader in specialty nickel alloys. Data provided by the manufacturer, deloro stellite, inc.
Stellitetm 1 contains a high proportion of hard, wear resistant. Investigation of corrosion behavior of wrought stellite alloys. The name of the company was kept in place until 1963, when it was renamed the. About 12% of these are welding wires, 19% are saw blade, and 9% are welding rods. Cobalt alloy 6b stellite 6b ams 5894 aircraft materials. The research reported herein is mainly focused on the effect of cutting parameters and tool wear on the machined surface defects, surface roughness, deformation layer and residual stresses when dry milling stellite 6, deposited by overlay on a carbon steel surface. Electrochemical study of corrosion behavior of stellite 6 alloy and. A higher percentage of chromium cr in them provides stellite alloys with high corrosion and wear resistance. Stellite 6b cobalt alloy steel cobaltchromium alloy. Stellite 6k has similar properties to stellite 6b, but is slightly harder and less ductile. Hightemperature hardness and wear resistance of stellite alloys.
Stellite 6b is a cobaltbased steel alloy that maintains a wide range of material benefits for industrial applications throughout the world. Stellite 6kdeloro stellite not a steel, cobalt based alloy with very high chromium content. It is regarded as the industry standard for generalpurpose wear resistance applications. The wear resistance of alloy 6b is due to the chemical composition and is not a product of heat treatment or other hardening mechanisms. Your help has enabled me to develop a clearer and more concise. Stellite 6b ist eine spezielle stellite legierung aus geschmiedetem warmgeschmiedetem material mit au. Wear characteristic of stellite 6 alloy hardfacing layer by plasma. By virtue of their excellent physiomechanical properties, stellites are highly regarded engineering materials. Cobalt alloy 6b stellite 6b is a cobaltbased, chromiumtungsten alloy used extensively in wear environments where its low friction coefficient minimises the risk of seizing and galling, even in applications where lubrication is not practical. Stellite 6b guides and guideposts stainless steel pivot pins larger diameter springs, nonbuckling arrangement improved vibration isolation achieved using silicone gasket between solenoid and baseplate tighter tolerances.
Tribomechanical evaluations of cobaltbased stellite 4. A comparative study for wear resistant of stellite 6 coatings on nickel alloy substrate produced by laser cladding, hvof and plasma spraying techniques abstract stellite 6 coatings were deposited using laser cladding, high velocity oxygen fuel hvof thermal spraying and plasma spraying techniques on a. Stellitetm 6 is available as welding wire, rod, powder, and electrodes, finished castings and pm parts. Stellite is the brand name of a hardfacing alloy which is widely used for valve seats, especially for valves subjected to abrasive service. Deloro stellite stellite 6k knife steel composition. The last action for this claim occurred on january 30, 2017. Stellite 6k is a customrolled material and can be produced to a gauge and sheet size uniquely suited to your application.
Talonitestellitedendritic cobalt blade material knife. Talonite, stellite and dendritic cobalt are all cobalt chromium alloys, suitable for making knife blades. Effects of silicon additive on wear resistance of stellite 6 at elevated. Ownership and use of this claim is overseen by the bureau of land managements bishop field office under the serial number camc34047. Adhesive wear is similar to stellite alloy 6, but resistance improves as the load increases. Deloro stellite stellite 6k knife steel composition analysis. Stellites posses high corrosion resistance and wear resistance properties.
Aug 15, 20 the carbides present in the cocrwbased stellite alloys are of chromiumrich m 7 c 3 type. Delamination failures of stellite hardfacing in power plants. The chemical composition of stellite 6 is given in table 3. Hightemperature hardness and wear resistance of stellite. A separate brochure is available for the wrought forms of this alloy, namely stellite 6b and stellite 6k. A wide variety of stellite 6 options are available to you, such as temperature of media, power, and structure. Dendritic cobalt is cast cobalt 6b, stellite 6k is cobalt 6b with 0. Kennametal stellitetm also offers hardfacing services. Solution treat at 11911204c, rapid air cool, age between 538871c to increase hardness and strength at the expense of impact and ductility. However, if used for chopping hard wood, the soft cobalt rolls over and the knife does not cut well. The trademark owners of stellite claim that stellite 6 is the most widely used of their range of stellite alloys, offering a proven industry standard for generalpurpose wear resistance, and high mechanical and chemical perfromance in hostile environments. For wrought grades stellite 6b and stellite 6k, the wrought or hot forging method of production leads to. The stellite alloys retain their properties at high.
Stellite alloys chemical composition, mechanical properties. Stellite 6 is available as welding wire, rod, powder, and electrodes. However, if used for chopping hard wood, the soft cobalt rolls over and the knife does not. It is an excellent material for use in one side wearing against most metals used in hot oxidation or hot corrosion applications.
Optimisation of the machining of stellite 6 pta hardfacing. Stellite 6k is excellent for cutting or scraping applications, such as knives or scraper blades. Date hs code description origin country port of discharge unit quantity value inr per unit inr sep 17 2016. Mordike institut fur wekstoffkunde and werkstofftechnik technical university of clausthal, germany a b s t r a c t. Stellite 6b is supplied in the solution treated condition to ams 5894 and its wear resistant. The efficiency of a machining process can be measured by evaluating the quality of the machined surface and the tool wear rate. A metal source, llc stellite alloysstellite alloys. Talonite is the same alloy as cobalt alloy 6b but has been hot rolled and age hardened to improve the hardness and wear resistance while also improving its machinability, thus making it cobalt alloy 6bh. A comparative study for wear resistant of stellite 6 coatings on nickel alloy substrate produced by laser cladding, hvof and plasma spraying techniques abstract stellite 6 coatings were deposited using laser cladding, high velocity oxygen fuel hvof thermal spraying and plasma spraying techniques on a nickel alloy substrate.
A comparative study for wear resistant of stellite 6 coatings. Check availability with our sales department by submitting your inquiry below to see if a metal source, llc can provide your stellite alloy metal requir. Dry sliding wear map for stellite 6 against a wcco 9010 disc 12 49 figure 214. Micrograph showing stellite 6 coating deposited at c scanning electron image showing an etched stellite 6 coating stellite 6 deposited onto 50 mm mild steel tube stellite 6 on ti 6al 4v blog at. Stellite 6b cocrw meets or exceeds ams 5894, pwa 1196, mcs 1012 and uns r30016 machining 6b. These different processes include casting, powder metal, hardfaced deposit, and wrought. The microstructure of stellite 6 alloy coating mainly consists of co and cr, fe7c3 phases. Stellite tm 6 can be supplied to the following specifications. Talonite is a cobaltchromium alloy from carbide processors.
A separate brochure is available for the wrought forms of this alloy, namely stellitetm 6b and stellitetm 6k. With its excellent wear characteristics, hot hardness, good corrosion resistance, and superior mechanical properties, stellite 6b has been the materialofchoice. It is suited to applications such as food mixing, knives and blades for cutting materials such as lumber where it out performs tool steels. Stellite the general name for a group of cobaltbase hard facing alloys containing chromium, tungsten, silicon, and other. Geronimo alloys manufactures parts from a wide variety of generic equivalent to trademarked alloys, as well as stainless steel. Wholesale stellite 6 stellite 6 manufacturers, suppliers ec21.
This study investigates the stellite deposition process and machinability of stellite 6 deposited on steel subtrate. Hpa cobalt 6b cocrw uns r30016 aka haynes 6b, hs 6b. Being able to provide our customers with these types of cost effective equivalent alloys, combined with efficient manufacturing times, creates a competitive advantage for our customers and their processes. The higher tungsten content of stellite alloy 4 gives improved high temperature properties and an increase in abrasive wear resistance over stellite alloy 6, but not as good as stellite alloy 12 or 3. Stellite 6 can be supplied to the following specifications. The corrosion behavior of two wrought stellite alloys, stellite 6 b and stellite 6 k, is studied under polarization test.
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