What type of material is Stellite?
Stellite alloys are a group of cobalt-chromium ‘super-alloys’ consisting of complex carbides in an alloy matrix predominantly designed for high wear resistance and superior chemical and corrosion performance in hostile environments.
What is Stellite 6 used for?
Stellite® 6 is ideally suited to a variety of hardfacing processes and can be turned with carbide tooling. Examples include valve seats and gates; pump shafts and bearings, erosion shields and rolling couples. It is often used self-mated.
Can you machine Stellite?
Machining Stellite Stellite alloys are difficult to machine and tend to have extremely high melting points due to the cobalt and chromium content. Typically, Stellite machining is completed by grinding, as opposed to cutting and parts are precisely cast to require minimal machining.
What is an alloy 6?
Alloy 6 is a cobalt-chromium-tungsten alloy with approximately 1% carbon. The material consists of a soft, solid solution matrix of cobalt-chromium tungsten surrounding a small percentage of hard, brittle chromium carbides.
What is Stellite 6B?
Stellite Alloy 6B is a wrought base-cobalt alloy. It is used in applications where wear, corrosion and high temperature resistance are needed. It is most commonly found in directional drilling tools, aerospace applications, valve parts, shaft sleeves and knives.
How Stellite coating is applied?
Kennametal Stellite uses various thermal spraying techniques to apply wear-resistant coatings to components, including High Velocity Oxygen Fuel (“HVOF”) spraying, plasma spraying, and flame spraying.
How is Stellite 6 applied?
Why are Stellite valves used?
Relia Stellite seat ball valve provides freedom thermal expansion of ball without jamming even at high temperature. The material most often used for hardfacing valve internals is Stellite 6, a cobalt alloy that contains chromium, tungsten, carbon and other elements (Figure 1).
What is Stellite 6?
Stellite 6 is a cobalt based alloy and cobalt does well with nickel. Its the high carbon that makes stellite hard. If memory serves the cobalt is there for temp stability. So which means, there will be no troubles on Hardfacing Stellite Gr. 6 on Nickel based alloys like Inconel 825 / Monel .
What is Stellite and what is it used for?
Applications. Stellite was a major improvement in the production of poppet valves and valve seats for the valves , particularly exhaust valves, of internal combustion engines . By reducing their erosion from hot gases, the interval between maintenance and re-grinding of their seats was dramatically lengthened.
What is Stellite material?
Stellite is a non-magnetic alloy which contains a variety of different metal components with the main elements being cobalt and chromium. 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.