Is Stellite corrosion resistant?
Stellite alloys are non-magnetic and typically associated with high corrosion resistance and as with many alloys, they are adaptable and can be refined for a range of specific applications. The carbides present in the Co-Cr-W-based stellite alloys are of chromium-rich M7C3 type.
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.
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.
Can Stellite be welded?
Stellite welding provides excellent resistance to corrosion. This is due to the inherent characteristics of the hard carbide phase dispersed in an alloy matrix which allows Stellite coatings even at high temperatures to retain their corrosion resistance properties.
What is Stellite welding?
Stellite is basically a cobalt alloy that is mainly used in wear applications, fusion welding, a spraying process, and hard facing applications. This alloy has an excellent combination of wear resistance, corrosion resistance, high strength, and all these features make them adaptable to the harsh environment.
What is the wear resistance of Stellite alloys?
The wear resistance of Stellite alloys at room temperature is mainly dependent on their carbon content and also influenced by tungsten content.
How does the hardness of Stellite change with temperature?
It has been found that the hardness and wear resistance of Stellite alloys behave differently at room temperature and at high temperatures (< 500°C).
What kind of research is done on Stellite?
In this research a group of Stellite alloys that cover the main features of the Stellite alloy family are studied for hardness and wear resistance. The emphasis of the research is on the variations of these performances with temperature.
What is the chemical composition of Stellite 6?
Stellite® 6, the nominal chemical composition of which is 27–32% Cr, 4–6% W, 0.9–1.4% C, with additions of Ni, Fe, Si, Mn and Mo and Co as balance, is a two-phase alloy, with a chromium carbide minor phase, which has been shown to have outstanding resistance to both erosion and corrosion.