Number of bids and bid amounts may be slightly out of date. The load is stabilised with a mechanism that allows free vertical. Stellite was a major improvement in the production of poppet valves and valve seats for the valves, particularly exhaust valves, of internal combustion. A higher percentage of chromium cr in them provides stellite alloys with high corrosion and wear resistance. Samples under investigation consisted of a lipseal. In the present paper, the inservice wear mechanisms and crosssectional microstructural evolution of a stellite 6b cobaltbased alloy subjected to sliding contact conditions are analysed. There are a large number of stellite alloys composed of various amounts of cobalt, nickel, iron, aluminium, boron, carbon, chromium, manganese, molybdenum, phosphorus, sulfur, silicon, and. Leewear performance and activity reduction effect of cofree valves in pwr environment. Cocrw meets or exceeds ams 5894, pwa 1196, mcs 1012 and uns r30016. Tensile strength is 758 mpa, yield stress is 655 mpa, youngs. Refer to case studies, application notes, brochures, videos, articles, white papers and sopsmethodologies. Download 6b datasheet high performance alloys, inc.
This page is your stellite 6 onestop source for the competitive prices and quality from sewing machine suppliers and manufacturers. The present study has developed a new hardfacing alloy, haynes alloy no. A separate brochure is available for the wrought forms of this alloy, namely stellite 6b and stellite 6k. It is made by a company whose name is stellite coatings in the usa and deloro stellite in the rest of the world. A comparative study for wear resistant of stellite 6. Stellite 6k has similar properties to stellite 6b, but is slightly harder and less ductile. Stellite 6b generally had a 2phase structure as shown in fig. The microstructure of stellite 6 contains hard m 7 c.
Pdf wear mechanisms and inservice surface modifications of. Stellite 6 can be supplied to the following specifications. Kennametal stellite stellite 6b solution heattreated at 1232c, 15. These different processes include casting, powder metal, hardfaced deposit, and wrought. Two layers of stellite 6 were coated for a maximum thickness of 6 mm or higher. Get listed ec21 is the largest global b2b marketplace. Stellite 1 5054 80 free 800hpalloy tel 7656758871 fax 7656757051 cobalt 6b is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. Pdf wear mechanisms and inservice surface modifications. Adamantium is a major update to the stellite network. Corrosion materials is a global leader in specialty nickel alloys. Alloy 6b uns r30016 ams 5894 description alloy 6b is a cobaltbased alloy with great wear, erosion and abrasion resistance.
On some of the rings the stellite is flaking away from the base material stain. The tools keep their edges and are no where as brittle or hard to sharpen as the carbides. A comparative study for wear resistant of stellite 6 coatings. Stellite 6b cocrw meets or exceeds ams 5894, pwa 1196, mcs 1012 and uns r30016 machining 6b. Stellite alloys are available in many different grades chemical compositions and several different processes or methods of manufacture. Stellite alloys chemical composition, mechanical properties. Heat treatment wrought forms of stellite 6b and stellite 6k are supplied in the solution heattreated condition unless otherwise specified. 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. A mixture of metal powder and a binder is formed to shape through either a pressing or extrusion process. Stellite 6b is supplied in the solution treated condition to ams 5894 and its wear resistant. Hpa cobalt 6b cocrw uns r30016 aka haynes 6b, hs 6b. You can grind stellite tool bits on ordinary aluminum oxide grinding wheels but the harder grits make this much easier.
It may also contain tungsten or molybdenum and a small but important amount ofcarbon. Influence of yttrium additive on wear behavior of stellite 6 at elevated temperatures 25 54. 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. In this research, cobalt alloy was implanted with 65 kev nitrogen ions at the. Deloro wear solutions is a global worldclass provider. Stellite is also a very good choice for punches and blades that must cut paper and the abrasive grades of plastics and fibers. Some of the main advantages that stellite 6b cobalt chromium alloy provides includes. Stellitetm 6 is available as welding wire, rod, powder, and electrodes, finished castings and pm parts.
Our service, product availability, size range, and bar lengths are unparalleled. The price of cobalt has risen dramatically in the last few years, and supply has often been uncertain. Stellite 6k is a customrolled material and can be produced to a gauge and sheet size uniquely suited to your application. Stellite 6b is a cobaltbased steel alloy that maintains a wide range of material benefits for industrial applications throughout the world. Toll free 800hpalloy tel 7656758871 fax 7656757051 cobalt 6b is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. I wondered whether our machining parameters were incorrect or there was a flaw in the stellite. An alternate to cobaltbase hardfacing alloys springerlink. Stellite 1 5054 80 stellite 6k is excellent for some uses and is a poor performer for others. 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. Talonite, stellite and dendritic cobalt are all cobalt chromium alloys, suitable for making knife blades. If you have a difficulty finding a right supplier, post your buying leads for free now. Stellite is a family of completely nonmagnetic and corrosionresistant cobalt alloys of various compositions that have been optimised for different uses.
Pta hardfacing of stellite 6 on stainless steel has been carried out in plasma transferred arc pta welding machine since it is a semiautomated process. Stellite definition of stellite by the free dictionary. Wear characteristic of stellite 6 alloy hardfacing layer. Introduction 1 stellite 6 is a very versatile material that is used for hardfacing of various component parts for applications requiring wear resistance cobaltbase rods 1982. Investigation of liquid impact erosion for 12cr steel and. Hpa cobalt 6b is a wear resistant alloy used for stems, balls, rails and bushings. Stellite 6b cobalt alloy steel cobaltchromium alloy. Tribological test was conducted to characterize the wear property. We maintain an extensive inventory of stellite alloy 6b bar and sheet. Adhesive wear is similar to stellite alloy 6, but resistance improves as the load increases. Kennametal stellitetm also offers hardfacing services. Hightemperature hardness and wear resistance of stellite. Co and cr, fe 7 c 3 ste llite 190, and mocontainin g cocrmoc combinations. The chemical composition of stellite 6 is given in table 3.
Cobalt alloy 6b stellite 6b ams 5894 aircraft materials. Pdf the basics of stellites in machining perspective. 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. Wholesale stellite 6 stellite 6 manufacturers, suppliers ec21. It may also contain tungsten or molybdenum and a small but important amount of carbon composition. Stellite 6 is available as welding wire, rod, powder, and electrodes. The analysis is carried out using focused ion beam fib, transmission electron microscopy tem, 3d confocal profilometer and nanoindentation techniques. The wear resistance of alloy 6b is due to the chemical composition and is not a product of heat treatment or other hardening mechanisms. This update brings us to hardfork v5 or version 9 in daemon and will happen at block height 503001. A separate brochure is available for the wrought forms of this alloy, namely stellitetm 6b and stellitetm 6k. If you cant find the information youre looking for on our site, please contact us. Stellite is the brand name of a hardfacing alloy which is widely used for valve seats, especially for valves subjected to abrasive service. However, if used for chopping hard wood, the soft cobalt rolls over and the knife does not cut well.
Pdf on jan 1, 20, md shahanur hasan and others published. Feel free to discuss your requirements with our staff. Mar 28, 2017 typically, a stellite part is precisely cast so that only minimal machining is necessary. Ams 5894 wear resistant cocrw cobalt 6b is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present. Stellite 6k is excellent for cutting or scraping applications, such as knives or scraper blades. Stellite 6b and stellite 6k are wrought materials whose physical properties are enhanced as the grain structure of the metal changes during plastic deformation. In this study, selfmated sliding wear of stellite 3 and stellite 6 consolidated. Typical applications include saw teeth, hardfacing, and acidresistant machine parts. Check availability with our sales department by submitting your inquiry below to see if a metal source, llc can provide your stellite alloy metal requirement. Wear characteristic of stellite 6 alloy hardfacing layer by. Pdf mechanical properties of the stellite 6 cobalt alloy implanted. Aug 15, 20 the carbides present in the cocrwbased stellite alloys are of chromiumrich m 7 c 3 type.
Stellite alloy is a range of cobaltchromium alloys designed for wear resistance. Dry sliding wear map for stellite 6 against a wcco 9010 disc 12 49 figure 214. Plasma transferred arc welding of stellite 6 alloy on. A metal source, llc stellite alloysstellite alloys. For wrought grades stellite 6b and stellite 6k, the wrought or hot forging method of production leads to. 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. Laser cladding, hvof, plasma spraying, stellite 6 coating, friction and wear, nickel alloy.
Kennametal stellite stellite 6b solution heattreated at 1232c, 12. The effect of temperature on sliding wear of selfmated hiped stellite. Comparison of the sliding wear behaviour of selfmated hiped. C were investigated by plasma arc surfacing processes on q235 steel. Stellite 6b hpa cobalt 6b uns r30016 high performance. The effect of nitrogen ion implantation on stellite 6 cobalt alloy was investigated. The most popular hardfacing alloys contain substantial amounts of cobalt, and have thus been especially affected by these factors. Argon gas was used as the shielding gas as well as the medium for generation of plasma in pta process. Stellite 6b also showed very different behavior in liquid impact erosion in comparison with 12cr steel. See each listing for international shipping options and costs. The corrosion behaviour of stellite 6 in simulated pwrwater at high. Hightemperature hardness and wear resistance of stellite alloys. Erosion test curves of stellite alloys 7 51 figure 215. During this forming process, the wrought material achieves higher strength than cast material of the same chemistry.