Stellite 694 is a cobalt-chromium alloy with a high tungsten content ensuring high matrix strength at high temperatures (up to 1148oC or 2100oF). The alloy has good wear resistance, creep resistance, corrosion resistance, thermal fatigue resistance and oxidation resistance. The main application is hard surfacing of interlocking surfaces of turbine blades. For use in gas turbine parts requiring hardness greater than Stellite 31.
Stellite 694 Alloy
Nominal Composition (Mass %) and Physical Properties
Co | Cr | W | Ni | C | Others | Hardness | Density (deposit) | Melting Range |
Base | 28.5 | 19.5 | 5.0 | 0.9 | V, Fe, Si, Mn | 44-50 HRC | 9.02 g/cm30.326 lb/in3 | 1237-1296ºC2259-2365ºF |
Stellite cobalt-based alloys consist of complex carbides in the alloy matrix. They are resistant to abrasion, abrasion and corrosion and retain these properties at high temperatures. Its excellent wear resistance is mainly attributed to the unique inherent properties of the hard carbide phase dispersed in the CoCr alloy matrix.
product
turbine wheel
turbine blade
nozzle ring
compressor blade
guide vanes
diffuser
Segment
Turbine Rotor
Turbine Stator
Stellite sheet
Stellite pipe
Stellite rod
Stellite bolt and nut
Stellite Fasteners
Stellite wire
spring
According to drawings or samples
Stellite alloys are a group of cobalt-chromium alloys known for their exceptional wear resistance, high temperature performance and corrosion resistance. Here's an overview of Stellite:
Composition:
Stellite alloys are primarily composed of cobalt (about 50-65%) and chromium (about 25-30%), with varying proportions of tungsten, carbon and other elements depending on the grade. These alloying elements give Stellite alloys a unique combination of properties.
Wear Resistance:
Stellite alloys are known for their excellent wear resistance, making them suitable for applications where components are subject to abrasive wear, erosion and sliding contact. They are typically used in high-wear environments such as cutting tools, saw teeth, valve seats, and pump components.
High Temperature Performance:
Stellite retains its mechanical properties at high temperatures, allowing it to withstand high temperatures without significant loss of strength or hardness. This makes Stellite alloys suitable for high-temperature applications such as gas turbine components, furnace components and exhaust valves.
Corrosion Resistance:
Stellite alloys exhibit good corrosion resistance in a variety of environments, including acidic and alkaline solutions, as well as high-temperature gases and molten salts. This corrosion resistance makes Stellite alloys suitable for use in chemical processing, marine engineering, and oil and gas production.
Versatility:
Stellite alloys are available in a variety of grades and forms, including powders for thermal spray coatings, castings and forgings such as rods and plates. This versatility allows the selection of the most appropriate grade and form of Stellite alloy for a specific application.
Applications:
Stellite alloys are widely used in aerospace, automotive, oil and gas, power generation and manufacturing industries. They are widely used in components requiring wear resistance, high temperature performance and corrosion resistance.
Aerospace field
Automobile and motorcycle manufacturing
Chemical industry
Marine engineering
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