What is Stellite material?
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 the hardness of Stellite 6?
between 36-45 HRC
Due to the alloying, Stellite® 6 has a matrix consisting of complex carbides that are especially useful for applications requiring excellent hardness and wear resistance. Its hardness values range between 36-45 HRC on the Rockwell scale and 380-490 HV on the Vickers scale.
Which valve is made of Stellite material?
Typical applications include saw teeth, hardfacing, and acid-resistant machine parts. Stellite was a major improvement in the production of poppet valves and valve seats for the valves, particularly exhaust valves, of internal combustion engines.
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.
Is Stellite expensive?
Stellite alloys are so hard that they are very difficult to machine, and anything made from them is, as a result, very expensive.
Is Stellite a metal?
Stellite® is a non-magnetic alloy that contains a variety of different metal components with the main elements being cobalt and chromium.
Is Stellite toxic?
ACUTE: Inhalation: Short, intensive exposure to copper, chromium and manganese may cause metal fume fever – a flu-like illness. Some forms of chromium, nickel, cobalt and tungsten carbides may cause asthma. Cobalt, chromium, boron, copper, vanadium, molybdenum, nickel and manganese are respiratory irritants.
Is Stellite brittle?
Stellite 6B offers both. An extensive hot forging process transforms brittle ingot into the tough, wear-resistant Stellite 6B. Don’t let the hardness range of 33-43RC fool you, the surface of this material goes through an extensive transformation that provides unmatched wear resistance for such a tough material.
What do you mean by Stellite?
/ (ˈstɛlaɪt) / noun. trademark any of various alloys containing cobalt, chromium, carbon, tungsten, and molybdenum: characteristically very hard and wear-resistant, they are used as castings or hard surface-coatings.
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.
Why is Stellite so expensive?
Stellite alloys are so hard that they are very difficult to machine, and anything made from them is, as a result, very expensive. Typically a Stellite part will be very precisely cast so that only minimal machining will be necessary.
What is the meaning of Stellite?
/ (ˈstɛlaɪt) / Save This Word! noun. trademark any of various alloys containing cobalt, chromium, carbon, tungsten, and molybdenum: characteristically very hard and wear-resistant, they are used as castings or hard surface-coatings.