Stellite 6 / UNS R30006 – Shenyang Top New Material Co., Ltd

Stellite™ 6 / UNS R30006

Description

Stellite™ 6 is a type of cobalt-based alloy that is known for its high temperature, wear resistance, and corrosion resistance. It is composed of cobalt, chromium, and tungsten, along with smaller amounts of other elements such as carbon, silicon, and iron. Stellite™ 6 is commonly used in applications where high temperature, wear, and corrosion resistance are required, such as in valve seats, bearings, and cutting tools.

One of the unique properties of Stellite™ 6 is its ability to maintain its hardness and wear resistance at high temperatures. This makes it a popular choice for applications in the aerospace and power generation industries, where components must withstand extreme temperatures and pressures.

Stellite™ 6 can be processed using a variety of techniques, including casting, powder metallurgy, and welding. It can also be coated with other materials, such as tungsten carbide or stainless steel, to enhance its wear resistance even further.

UNS R30006 is a specific grade of Stellite™ 6 alloy that conforms to the specifications set forth by the United States Unified Numbering System (UNS). The UNS number is a systematic scheme in which each metal is designated by a letter followed by five numbers. It is a composition-based system of commercial materials and does not guarantee any performance specifications or exact composition with impurity limits. Other nomenclature systems have been incorporated into the UNS numbering system to minimize confusion.temperature

Stellite™ 6 / UNS R30006 Nominal Chemical Composition (mass%)

Grade	Stellite 6	UNS R30006
C(Carbon)	0.9-1.4	0.9-1.4
Mn(Manganese)	1.0	1.0
Si(Silicon)	1.5	1.5
Cr(Chromium)	27.0-31.0	27.0-31.0
Ni（Nickel）	3.0	3.0
Mo（Molybdenum）	1.5	1.5
W(Tungsten)	3.5-5.5	3.5-5.5
Co(Cobalt)	Bal.	Bal.
Fe(Iron)	3.0	3.0

Stellite™ 6 Properties

Alloy	Hardness(HRC)	Density(g/cm³)	Ultimate Tensile Strength(KSI)	Elongation(%)
Stellite 6	39-43	8.35	121	1

Stellite™ 6 Application

Stellite™ 6 has a wide range of applications in various industries, because of its excellent wear resistance, corrosion resistance, and high-temperature strength. Some of the common applications of Stellite™ 6 include:

Valve components: Stellite™ 6 is commonly used to manufacture valve seats, valve balls, and other components in severe service valves, which are used in the oil and gas, chemical, and petrochemical industries.
Cutting tools: Stellite™ 6 is widely used in processing environments that are high-temperature corrosive, or high-temperature abrasive, e.g. Viscose fiber and molten glass, etc.
Aerospace components: Stellite™ 6 is used in a variety of aerospace applications, including turbine blades, combustion chambers, and exhaust nozzles.
Power generation: Stellite™ 6 is used in gas turbine engines and steam turbine components, such as blades and nozzles.

Stellite™ 6 Shapes

Stellite™ 6 is available in a variety of shapes and forms to meet the needs of different applications. Some common shapes and forms of Stellite™ 6 include:

Rods and Bars: Stellite™ 6 rods and bars are commonly used in manufacturing valve seats, cutting tools, and other components that require high wear resistance and toughness.
Sheets and Plates: Stellite™ 6 sheets and plates are used in the aerospace, and power generation.
Wire: Stellite™ 6 wire is commonly used in welding and brazing applications for joining Stellite™ 6 components or for repairing worn or damaged parts.
Powder: Stellite™ 6 powder is used in powder metallurgy processes to manufacture complex parts with intricate geometries.
Customized Products: Stellite™ 6 can be machined into complex shapes and sizes, making it a versatile material for a wide range of applications.

Stellite™ 6 Production Process

Stellite™ 6 can be produced using a variety of manufacturing processes, including casting, powder metallurgy, forging, and electroslag remelting. The specific production process used depends on the desired final product and the application requirements. Here are some of the common Stellite™ 6 production processes:

Casting: Stellite™ 6 can be cast into various shapes and sizes, including valve seats, turbine blades, and other components. The casting process involves melting the Stellite™ 6 alloy in a furnace and then pouring it into a mold. Once the Stellite™ 6 has solidified, it is removed from the mold and subjected to finishing processes, such as machining and polishing.
Powder metallurgy: Stellite™ 6 can also be produced using powder metallurgy techniques. In this process, Stellite™ 6 powder is mixed with other powders and compacted into the desired shape using high-pressure dies. The compacted shape is then sintered in a furnace to form a solid component. The sintering process involves heating the compacted powder to a high temperature, which causes the powder particles to fuse together, forming a solid component.
Foging: Stellite™ 6 can be forged into a wide range of shapes and sizes using various forging techniques, including open-die forging and closed-die forging. Forging is a manufacturing process that involves shaping metal using compressive forces to create strong, durable, and high-performance components.
Electroslag Remelting: ESR is an effective way to remove impurities and improve the mechanical properties of Stellite™ 6 alloys, making them ideal for high-performance applications in industries such as aerospace, energy, and medical. The ESR process can also be used to produce other Stellite™ alloys with superior mechanical properties.
Welding: Stellite™ 6 can also be used as a welding material for joining Stellite™ 6 components or for repairing worn or damaged parts. Welding can be done using various techniques, including gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and plasma welding.
Machining: Stellite™ 6 can be machined into the desired shape and size using conventional machining processes, such as milling, drilling, and turning. However, Stellite™ 6 is a hard and tough material, so special cutting tools and machining techniques are required to avoid excessive tool wear and prolong the tool life. (Machining is carried out on the basis of blanks produced by casting, powder metallurgy, forging, electroslag remelting, and other processes)