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About Stellite 4 Product Nederland

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.

Stellite 4 is a cobalt-based alloy with higher wear resistance than Stellite 6 and is used in applications subject to only moderate mechanical impact. It is a machinable cast alloy with excellent high temperature strength due to its high tungsten and carbon content. It has very good wear resistance at room and high temperatures. It exhibits a very low coefficient of friction when rubbing against itself and hard steel.

Stellite 4 is commonly used in molds, hot pressing and hot extrusion of copper-based and aluminum alloys. It has also been successfully used in pumps operating in corrosive and erosive conditions. Stellite 4 is also used for bushings and sleeves in the zinc-aluminum hot-dip coating process.

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Stellite 4 Alloy

Nominal Composition (Mass %) and Physical Properties

Co	Cr	W	C	Others	Hardness	Density	Melting Range
Base	30	14	1	Mn, Fe, Si, Ni	45-49 HRC	8.61 g/cm30.311 lb/in3	1340-1395ºC2245-2545ºF

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turbine wheel
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compressor blade
guide vanes
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Segment
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Stellite rod
Stellite bolt and nut
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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.