Stellite is the brand name of a hardfacing alloy which is widely used for valve seats, especially for valves subjected to abrasive service. This extensive heritage was spent learning about your toughest applications, and crafting our cobalt and nickelbased alloys specifically to combat these wear challenges. Stellite tm 3 corrodes primarily by a pitting mechanism and not by general mass loss in seawater and chloride solutions. Stellite alloys also contain a hard laves phase in a. Stellite 21 stellite alloy and stellite 21 mechanical properties, chemical element, cross reference, datasheet. Microstructure and phase analyses of stellite 6 plus 6 wt. Stellite alloys are available in many different grades chemical compositions and several different processes or methods of manufacture. They are resistant to wear, galling and corrosion and retain these properties at high temperatures. These carbides are primarily chromiumcarbide m 7c 3 groups which make up approximately 1617% of the alloy by volume other carbide groupings are also present in lower. Kennametal stellite is a global provider of solutions to wear, heat, and corrosion problems and is a worldclass manufacturer of alloy based materials and components.
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. Ask about our finish machined stellite 6b components capability. Hy s6stellit 6 uns r3006ams 5387c2001 is the most widely used of the wear resistant cobaltbased alloys and exhibits good allround performance. Stellitetm 3 alloy stellite tm cobaltbased alloys consists of complex carbides in an alloy matrix. It alters the microstructure of coated stellite 6 and base metal and affects its mechanical properties at high temperature.
It is regarded as the industry standard for generalpurpose wear resistance applications. Kennametal stellite alloys kennametal pdf catalogs. Stellite 6 can be supplied to the following specifications. Stellite material stellite is a very versatile material for hardfacing of various component parts for applications requiring wear resistance. 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. The stellite alloys retain their properties at high temperatures where. The material does not have direct metallography properties. The carbon equivalent is not important, rather, the first thing to.
Stellitetm 6 alloy stellite tm cobaltbased alloys consists of complex carbides in an alloy matrix. Stellite 6 is our most popular alloy as it provides a good balance of all of these properties. Chromium acts as a carbide former and is a most important strengthening element in the alloy matrix. Pdf microstructure and phase analyses of stellite 6 plus 6. The favorable hardness and wear properties of stellite 6 are derived from carbides that form in the alloy and are suspended within the cobalt matrix. The top countries of supplier is china, from which the percentage of stellite 6 powder supply is 100% respectively. Stellite 6b is a cobaltbased steel alloy that maintains a wide range of material benefits for industrial applications throughout the world. Characterisation of the passive film on hiped stellite 6. Dry sliding wear map for stellite 6 against a wcco 9010 disc 12 49 figure 214. Stellite cobalt base alloys consist of complex carbides in an alloy matrix. Work hardening behaviour of stellite alloys and nickelbased alloy 18 39 figure 27. Microstructural characterization was carried out on stellite 6 coatings and.
Datasheet for steel grades tool steel and hard alloy stellite 6 stellite 6 standard number. Hy s6stellit 6uns r3006ams 5387c2001 is the most widely used of the wear resistant cobaltbased alloys and. Home product center cobalt alloy uns r3006stellite 6 uns r3006stellite 6 introduction. The microstructure of stellite 6 contains hard m7c3 carbides in interdendritic regions of the fcc matrix phase in both ascast and as welded conditions. 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. They are resistant to wear, galling, and corrosion and retain these properties at high temperatures.
Higher carbide level is associated with lower corrosion resistance, since, in forming the carbides, carbon ties up a portion of the chromium in the alloy 1, so the effective chromium. Because it is the most common, well focus our discussion initially on hardfacing with alloy 6. Laser cladding, hvof, plasma spraying, stellite 6 coating, friction and wear, nickel alloy. Their exceptional wear resistance is due mainly to the unique inherent characteristics of the hard carbide. They are typically used in the temperature range 315 600 c 600 1112 f. An extensive hot forging process transforms brittle ingot into the tough, wearresistant stellite 6b that meets aerospace material specification ams 5894 requirements. This field is for validation purposes and should be left unchanged. A comparative study for wear resistant of stellite 6 coatings. Datasheet for steel grades tool steel and hard alloy stellite 6. Pdf wear characteristic of stellite 6 alloy hardfacing layer by. Stellite 6 is a po wder of cobaltbase alloy hardfacing designed to produce hard and thick coating 5. Status of stellite 6 friction testing unt digital library. Dont let the hardness range of 3343rc fool you, the surface of this material goes through an extensive transformation that provides unmatched wear.
Stellite 6 is a cobase wear resistant alloy containing 1% c, 27% cr, 4. Mechanical properties of the stellite 6 cobalt alloy. This component is a 410 stainless steel ring of approximately 8in in outer diameter and 5in in inner diameter. A wide range of standard alloys chemistry and dimensional allows the flexibility to provide custom materials to unique specifications. Characterisation of the passive film on hiped stellite 6 alloy using xray photoelectron spectroscopy. In most gate valves, these surfaces are hardfaced with stellite 6, a cobaltbased alloy. Abstract austenitic stainless steel was deposited on 9cr1mo steel asme grade 91 by flux cored arc welding process and above that stellite 6 cocr alloy was coated by plasma transferred arc welding process to improve wear resistance for high temperature valves applications. This page is mainly introduced the stellite 6 datasheet, including chemical. These different processes include casting, powder metal, hardfaced deposit, and wrought. Stellite alloy chemistries all c w m c hardness, oys r o hrc stellite 6 29 4. In stellite alloys this generally has the following effects.
A wide variety of stellite 6 alloy options are available to you, such as standard, material. Stellite 6b cobalt alloy steel cobaltchromium alloy. Plasma transferred arc welding of stellite 6 alloy on. Cobalt 6 stellite equivalent cobalt alloys trademark. 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. Stellite 6 is available as welding wire, rod, powder, and electrodes. This alloy is commonly specified by customers around the world on valve specification sheets. Stellite cobaltbase alloy is a kind of cemented carbide which can resist various types of wear and corrosion as well as high temperature oxidation. Cobalt 6 stellite equivalent cobalt alloys wingate alloys can supply parts made of almost any alloy required using the generic equivalent of various trademarked alloys. Aug 15, 20 the carbides present in the cocrwbased stellite alloys are of chromiumrich m 7 c 3 type. Kennametal stellite is a global provider of solutions to wear, heat, and corrosion problems and is a worldclass manufacturer of alloybased materials and components.
Stellite is a family of completely nonmagnetic and corrosionresistant cobalt alloys of various compositions that have been optimised for different uses. Ct5 also has good resistance to impact and cavitation erosion. Analytical methods exist for predicting the thrust needed to operate these valves at specific pressure conditions. I wondered whether our machining parameters were incorrect or there was a flaw in the stellite. A higher percentage of chromium cr in them provides stellite alloys with high corrosion and wear resistance at high temperatures and good magnetic properties. Pdf the microstructure and wear resistance of stellite 6 alloy hardfacing layer at two different temperatures room temperature and 300c. Stellite is a nonmagnetic alloy which contains a variety of different metal components with the main elements being cobalt and chromium. Stellite 6 coating is recommended for it high r esistance to abrasive wears. Wear characteristic of stellite 6 alloy hardfacing layer. Bonding stellite 6 to alloy steel asme mechanical code. Stellite alloys chemical composition, mechanical properties. On some of the rings the stellite is flaking away from the base material stain. Stellite 6 steel chemical composition, metal properties. C were investigated by plasma arc surfacing processes on q235 steel.
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. 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. Cobalt alloy 6b stellite 6b ams 5894 aircraft materials. When they are applied to steels by hardfacing, there is intermixing of the stellite alloy and the steel, resulting in a higher iron content in the overlay, especially in the first layer.
A separate brochure is available for the wrought forms of this alloy, namely stellite 6b and stellite 6k. Nominal chemical composition mass% alloy co cr w c others stellite tm 3 bal. Safety data sheet 3a sanitary standards fda approval. We can produce tool steel and hard alloy the specifications. Stellite 6b is stocked in standard mill forms of flat stock ranging from 0. Our wps states a preheat of 500 f we have maintained that. For wrought grades stellite 6b and stellite 6k, the wrought or hot forging method of production leads to. This paper presents results of specimen tests addressing this issue, with emphasis on the following.
Bonding stellite 6 to alloy steel bonding stellite 6 to alloy steel river1 industrial op 21 aug 08 16. Roomtemperature tensile elongation versus percent cold work of stellite alloys and nickelbased alloy 18 40. Stellite 6 is the most widely used of the wear resistant cobaltbased alloys and exhibits good allround performance. Stellite 6 stellite alloy and stellite 6 mechanical properties, chemical element, cross reference, datasheet. Some of the main advantages that stellite 6b cobalt chromium alloy provides includes. Browse our selection of pdfs here and request a quote today. Influence of cutting parameters and tool wear on the surface integrity of cobaltbased stellite 6 alloy when machined under a dry. Co and cr, fe 7 c 3 stellite alloys in 50 ppm salt0. At room temperature, the wear rate is influencedbytheloadings. That is commonly known as cobalt chromium tungsten molybdenum alloy or stellite alloy stellite alloy was invented by elwood hayness in. Tribological test was conducted to characterize the wear property.
Kennametal stellite began developing protective materials over 100 years ago. Hightemperature hardness and wear resistance of stellite. The microstructure of stellite 6 contains hard m 7 c. Influence of yttrium additive on wear behavior of stellite 6 at elevated temperatures 25 54. It is made by a company whose name is stellite coatings in the usa and deloro stellite in the rest of the world. Datasheet for steel grades tool steel and hard alloy. Cobased alloy, especially stellite 6 alloy, is often used as a coating material in valve disc manufacturing, due to its excellent wear.
Microstructure and phase analyses of stellite 6 plus 6. Exhibit a unique combination of wear resistance, strength and corrosion resistance. Stellite 21 steel chemical composition, metal properties. Hardfacing is applied to a portion of the face and inner chamfered edge of the ring a geometry. Stellite 6 chemical composition, mechanical properties, heat treatment, stellite 6 datasheets, stellite 6supplier author. Stellitetm cobaltbased alloys consists of complex carbides in an alloy matrix. Our portfolio of alloys continues to grow as our metallurgists develop grades targeting specific wear conditions. Wear characteristic of stellite 6 alloy hardfacing layer by plasma.
A comparative study for wear resistant of stellite 6. Pdf microstructure and phase analyses of stellite 6 plus. Wear characteristic of stellite 6 alloy hardfacing layer by. Erosion test curves of stellite alloys 7 51 figure 215. These carbides provide high hardness level of the alloy. Cobalt alloy stellite 6 uns r3006 short introduction. When the stellite 6 is coated over steels by hardfacing directly, there is admixture of stellite 6 alloy and base metal, resulting in a higher iron content in the overlay. Pdf characterisation of the passive film on hiped stellite. This material is a cobaltchromiumtungsten alloy with about 1% carbon. It is able to retain these same properties at elevated temperatures. The stellite alloys retain their properties at high temperatures where they also have excellent oxidation resistance. These consumables come in the form of rod, wire, powder, and electrode and can be custom engineered to meet individual customer needs.
Kennametal stellite manufactures consumable weld overlay materials as cast rod, cored wire, electrodes, and powder, with a special focus on nickel and cobalt base materials. They are resistant to wear, galling and corrosion and retain these properties. Stellitetm 6k stellite 6k has similar properties to stellite 6b, but is. Microstructure evolution and failure behavior of stellite 6. Stellite 6 chemical composition, stellite 6 mechanical properties, heat treatment, stellite 6 datasheets, stellite 6 supplier tcpdf created date. Ct52 is a cobalt based alloy, which provides excellent resistance to wear, galling, and corrosion.