Definition of stellite from the collins english dictionary. The chemical composition of stellite 6 is given in table 3. The wear resistance of alloy 6b is due to the chemical composition and is not a product of heat treatment or other hardening mechanisms. The story of haynes international spans a century of products, processes and, most of all, people. However, if used for chopping hard wood, the soft cobalt rolls over and the knife does not cut well. Journal of engine ering material s and manufact ure, 1 2, 3550. The type of stellite alloy being deposited should also be considered. The appropriate uns number has been given wherever possible.
Stellite is a range of cobaltchromium alloys designed for wear resistance. The stellite trademark, which was applied to the first cobalt wear alloys, is still in use. A history of the haynes stellite company, 19121972 gray, ralph d on. Chemical composition of astm a182 f11 steel, stellite and fig. Nuregcr6807, results of nrcsponsored stellite 6 aging.
Influence of cutting parameters and tool wear on the surface. Stellite definition and meaning collins english dictionary. Stellite is a nonmagnetic alloy which contains a variety of different metal components with the main elements being cobalt and chromium. Pdf the basics of stellites in machining perspective. Hardfacing is usually limited to one, two, or three layers. Stellite article about stellite by the free dictionary. Table 1 list of etchants and their chemical composition etchant no. Haynes 25 l605 is a nonmagnetic cobalt based superalloy. David boyes dendritic cobalt is still available on boye knives, and. It may also contain tungsten or molybdenum and a small but important amount ofcarbon. Wear resistant cocrw cobalt 6b is a cobalt based chromium, tungsten alloy for wear environments where seizing, galling and abrasion are present.
Base metal primarily affects the choice of buildup materials. One of its most popular uses is as valve seats and valve facings used in severe service internal combustion engines. Industrial laser annual handbook, 1986 edition, penn well books, laser focus. Journal of engine ering material s and manufact ure, 12, 3550. Asme weld number tables are discussed in relation to base metals, filler metals and their positioning in the number tables. Stellite 6b hpa cobalt 6b uns r30016 high performance. Pdf microstructure and phase analyses of stellite 6 plus 6. The top countries of suppliers are india, china, and taiwan, china, from which the percentage of stellite 1 supply is 1%, 97%, and 2% respectively. Steel castings handbook supplement 8 high alloy data. The ps, hvof and lc stellite coated all had a similar nominal composition of balance co, 28% cr, 4. Haynes 25 l605 has a unique ability to resist corrosion in very severe environments.
Stellite is a family of completely nonmagnetic and corrosionresistant cobalt alloys of various compositions that have been optimised for different uses. Consumable selection welding material selection depends upon three major factors. It is a trademarked name of the deloro stellite company and was invented by elwood haynes 1 in the early 1900s as a substitute for cutlery that stained or that had to be constantly cleaned. The top countries of suppliers are india, china, and taiwan, china, from which the percentage of stellite 1 supply is 1 %, 97%, and 2% respectively. Tensile strength is 758 mpa, yield stress is 655 mpa, youngs modulus is 210 gpa, poissons ratio is 0. Stellite 6b is supplied in the solution treated condition to ams 5894 and its wear resistant. This report on the composition and physical properties of the magnetite forms part of a detailed study of the mineralogy and petrology of the ejected plutonic blocks collected by the late professor l. Mechanical properties of stellite 3 and stellite 6 technical.
The chemical composition of stellite 6 is given in table 2. Polymet corporation is a leading manufacture of premium consumables for welding, hardfacing, and thermal spraying. Pdf microstructure and phase analyses of stellite 6 plus. Stellite alloys chemical composition, mechanical properties. A wide variety of stellite 1 options are available to you, such as stainless steel. Cobalt alloy 6b stellite 6b ams 5894 aircraft materials. Hardfacing wear resistant surfaces deposited on the base metal or on buildup deposits extend service life. Stellite 6 is a cobase wear resistant alloy containing 1 % c, 27% cr, 4. Table 1 composition weight % of stellite 6 alloy ref 4. Stellite alloys are a group of cobaltchromium superalloys consisting of complex carbides. Talonitestellitedendritic cobalt blade material knife. This article references a book on the haynes stellite company written by gray.
Cobaltbased alloys, also named stellite, have a wide range of applications. Formed in kokomo, indiana in october, 1912, the more than 100year history of haynes continuous operation also captures the historic growth of many wellknown nickel and cobaltbase superalloy families. Review hardfacing steel with nanostructured coatings of stellite6 by supersonic laser deposition rocco lupoi1, andrew cockburn1, chris bryan1, martin sparkes1, fang luo2 and william oneill1 the ability to manufacture coatings is critical to engineering design. Table 1 stellite6 chemical composition wt%, hardness and. Eximpulse services will provide you the latest and relevant market intelligence reports of stellite import data you can use this stellite import data for multiple kinds of analysis. Section viii, division 1 asme design values listed in section iii, division 1, table 1 72 the information and data in this product data bulletin are accurate to the best of our knowledge and belief, but are intended for general information only. A comparative study for wear resistant of stellite 6 coatings. A comparative study for wear resistant of stellite 6. Steel castings handbook supplement 8 high alloy data sheets corrosion series steel founders society of america 2004. Stellite alloys 1, 6, and 12 are the most popular materials within this group. Hardfacing steel with nanostructured coatings of stellite6 by. Microstructure and phase analyses of stellite 6 plus 6 wt. It is a trademarked name of the deloro stellite company and was invented by.
David boyes dendritic cobalt is still available on boye knives, and stellite 6k is manufactured by deloro stellite. In simple terms a stellite alloy is designed to cope with extreme wear and tear and by introducing a variety of other components can be specifically moulded for a particular requirement. 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. Hardfacing steel with nanostructured coatings of stellite6 by supersonic laser deposition rocco lupoi1, andrew cockburn1, chris bryan1, martin sparkes1, fang luo2 and william oneill1 the ability to manufacture coatings is critical to engineering design. 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 6 is available as welding wire, rod, powder, and electrodes.
Specimens were coated using detonation gun thermal spray process, with different coating thicknesses of stellite6 ranging from 50 m to 150 m. There seem to be a lot of different stellite alloys, if you want a copy of the composition of these alloys, check this website. It is regarded as the industry standard for generalpurpose wear resistance applications. This alloy also has higher hot hardness and resists galling like all stellite alloys when mated with another stellite alloy.
Laser cladding is one of the most advantageous solutions to fulfill this kind of repair. The material itself has been around since the 1900s and was originally seen as a substitute for traditional metal cutlery which suffered from general wear and tear and was also prone to staining. Hightemperature hardness and wear resistance of stellite alloys by samit kapoor. Stellite and tungsten carbide powders were used as coating materials with average particle sizes of 30 and 25gm, respectively. Tribaloy t800 alloy is one of the highsilicon, intermetallic wear alloys. Stellite alloy is a range of cobaltchromium alloys designed for wear resistance. Haynes 25 l605 maintains good oxidation resistance up to 1900 f. Tensile strength is 758 mpa, yield stress is 655 mpa, youngs.
Stellite alloys chemical composition, mechanical properties and. Research article effect of gtaw welding parameters. They were not satisfactorily resistant to boiling 60% hnosub 3. Universal wire works stellite 31 ams 5789 filler metal. Stellite 6, the nominal chemical composition of which is 2732% cr, 46% w.
The different varieties of stellite alloy can take in an array of different elements such as nickel, iron, carbon, magnesium, sulphur, silicon and titanium. Supersonic laser deposition sld is a novel coating method based on cold. Specialty turning tangentially mounted inserts fixperfect high performance inserts. The bespoke tool design allows researchers to benchmark new and novel. Many components require the application of additional layers to. I cut a few cores that were welded stellite, i was using a coated bullnose endmill, i was cutting a taper so just the nose radius was doing all the work, i had a 10mm dia and was somewhere around 200 sfpm and about a. A separate brochure is available for the wrought forms of this alloy, namely stellite 6b and stellite 6k.
There are 916 suppliers who sells stellite 1 on, mainly located in asia. Scanning electron micrographs of stellite and tungsten carbide powders are shown in. Section viii, division 1 asme design values listed in section iii, division 1, table 172 the information and data in this product data bulletin are accurate to the best of our knowledge and belief, but are intended for general information only. Stellite 6k is excellent for some uses and is a poor performer for others. Stellite 6, the nominal chemical composition of which is 2732% cr, 46% w, 0. The alloys may also contain tungsten or molybdenum and a small but important amount of carbon. Talonite and stellite 6k claim the highest rc at around 47. Hightemperature hardness and wear resistance of stellite alloys.
The chemical composition of the substrate material is shown in table 1. Stellite 6 hardfacing alloy with different ta contents is successfully synthesized. The cocrw system alloy retains its hardness at elevated temperatures and is especially effective for wear applications at high temperatures or in a corrosive environment, and are widely used as a wear, corrosion, and heatresistant material 43. Mead composition notebooks, comp books, wide ruled paper, 100 sheets, 934 x 712 inches, classic black marble, 3 pack 38301. The stuff will melt and stellite facings can be applied by normal welding methods in the field to steel pieces subject to heat and abrasion. Cobalt alloys are used primarily for wear applications and are particularly wellsuited for hardfacing. Chemical composition of astm a182 f11 steel, stellite and. Hardfacing steel with nanostructured coatings of stellite. A history of the haynes stellite company, 19121972. Chemical composition of stellite 6 powder and st14 steel substrate. An alloy that had the same chemical composition as the stellite 6 alloy but not. Stellite alloys are a group of cobaltchromium superalloys consisting of complex carbides in an alloy matrix predominantly designed for high wear resistance and superior chemical and corrosion performance in hostile environments. Stellite hasnt gone away, there isnt that much hype about it these days, thats all.
Effect of ta on the microstructure and hardness of stellite 6 coating. I need info on welding satellite 6 to ss316 pretty much what the title said, i received a contract job to help out a company hardface their ss316 parts with stellite 6 filler so they can be machined back down to a certain height. Hightemperature hardness and wear resistance of stellite. Alloy 6b is a cobaltbased alloy with great wear, erosion and abrasion resistance. Aug 15, 20 chromium is also an extremely important component of stellite alloys, not only does it offer its high corrosion resistant properties to the alloy but it is also the predominant carbide former and it provides strength as a solute in the alloying matrix. Hy s6stellit 6uns r3006ams 5387c2001 is the most widely used of the wear resistant cobaltbased alloys and exhibits good allround performance. Ams 5759 requires minimum yield strength of 45,000 psi at room temperature.
Mechanical properties of stellite6 coated aisi 316l. Cobalt alloy, kennametal stellites cobalt base alloys are available as cobalt rods, cobalt electrodes, cobalt wire and cobalt powder. Information provided by universal wire works for their line of welding wire and filler metal. Hardfacing steel with nanostructured coatings of stellite6. Stellitetm cobaltbased alloys consists of complex carbides in an alloy matrix. Stellite 6 can be supplied to the following specifications. Applications suggested for the materials are described only to help readers make their own evaluations. As far as i can tell, talonite is not really available anymore since rob simonich passed away, as he was the distributor for talonite. Present paper describes the mechanical properties of stellite6 coated aisi 316 l stainless steel. Stellite 3 is superior and this improved resistance increases as loads are increased or speeds are increased to 10 times to 25 times that of stellite alloy 6 or 12.