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.
Where is Stellite used?
Some of the major applications of stellite include the following: Saw teeth, hardfacing, and acid-resistant machine parts. Poppet valves, valve seats and exhaust valves of internal combustion engine. M2HB machine gun and machine gun barrels.
Why is Stellite so expensive?
Stellite alloy is a completely non-magnetic and non-corrosive cobalt alloy. … Stellite alloys display astounding hardness and toughness, and are also usually very resistant to corrosion. 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 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.
How is Stelliting done?
Stellite alloys are difficult to process, and because of the cobalt and chromium content, they appear to have exceptionally high melting points. Stellite welding is usually done by grinding, as opposed to cutting, and sections are cast precisely to allow minimal machining.
How do you spell Stellite?
Stellite
- Stellite is a range of cobalt-chromium alloys designed for wear resistance. …
- Stellite is a trademarked name of Kennametal Inc. …
- Stellite alloys are a range of cobalt-based alloys, with significant proportions of chromium (up to 33%) and tungsten (up to 18%).
What is Stellite powder?
Stellite 21 AM powder enables customers to achieve similar wear and corrosion resistance properties in additively manufactured parts. It is ideally suited for flow control applications and can be integrated into complex designs to mitigate cavitation, erosion, or corrosion failures.
How do you weld Stellite?
They are usually welded using a low preheat temperature (50-150°C) followed by a slow cool in vermiculite. The difficulty with austenitic steels is that during hard facing, carbon can diffuse from the Stellite alloy into the heat affected zone (HAZ).
Is Stellite conductive?
Outstanding resistance to cavitation-erosion. Combines wear and corrosion resistance with good impact strength and resistance to thermal shock. Retains high hardness, even at red heat. Electrical conductivity 1.90% compared to Copper.
What is hardfacing rod?
Hardfacing is the process of applying a harder or tougher metal to the base material. Hardfacing electrodes are divided into three categories: iron base, nickel base, and cobalt base, which are then alloyed with carbide-forming elements such as chromium, tungsten, molybdenum, and other elements.
What is Stellite and why is it important?
- Stellite was also used as the cage material for the first commercially available artificial heart valve, the Starr-Edwards caged-ball valve, first implanted in 1960.
Why choose Kennametal Stellite™?
- Kennametal Stellite™ offers both off the shelf and custom solutions for HVOF and PTA coating applications. These systems are designed and built to provide flawless coatings in any manufacturing environment.
What is the difference between stellite and other alloys?
- Other alloys are formulated to maximize combinations of wear resistance, corrosion resistance, or ability to withstand extreme temperatures. Stellite alloys display outstanding hardness and toughness, and are also usually very resistant to corrosion. Typically, a Stellite part is precisely cast so that only minimal machining is necessary.
What is Stellite 6K?
- Thanks to Stellite 6K, applications such as industrial knives and scrapers remain sharp 4x longer than other hardened D2 materials. This specialty formulated material is designed for outstanding performance in the harshest cutting and scraping applications.
