Major constituents of stellite are

Explanation:

Major Constituents of Stellite

• Stellite is a group of cobalt-based alloys that are primarily used for their excellent wear resistance, corrosion resistance, and ability to maintain strength at elevated temperatures. These properties make stellite alloys highly suitable for applications in harsh environments, such as cutting tools, turbine blades, and valve seats.
• The major constituents of stellite are cobalt, chromium, and tungsten. These elements provide the alloy with its outstanding mechanical properties, high melting point, and resistance to oxidation. Some stellite grades may also contain minor amounts of molybdenum, carbon, and other elements to further enhance specific properties.

Option 3: Cobalt, Chromium, Tungsten

• This option accurately lists the major constituents of stellite. Cobalt serves as the base element, providing the alloy with high-temperature strength and corrosion resistance. Chromium contributes to the alloy's hardness and oxidation resistance, while tungsten enhances wear resistance and strength. Together, these elements make stellite highly suitable for demanding applications.

Properties of Stellite:

• Wear Resistance: Stellite is exceptionally resistant to wear, making it ideal for cutting tools and components exposed to abrasive conditions.
• Corrosion Resistance: The chromium content in stellite provides excellent resistance to corrosion, even in harsh chemical environments.
• High-Temperature Strength: Cobalt-based alloys like stellite maintain their strength and hardness at elevated temperatures, making them suitable for high-temperature applications such as turbine blades.
• Oxidation Resistance: Chromium enhances the alloy's ability to resist oxidation, ensuring durability in high-temperature environments.

Applications:

• Cutting Tools: Stellite is widely used in cutting tools due to its exceptional hardness and wear resistance.
• Aerospace Components: The alloy's ability to retain its properties at high temperatures makes it suitable for aerospace applications, such as turbine blades and engine components.
• Medical Devices: Stellite is used in medical devices and implants due to its corrosion resistance and biocompatibility.
• Valve Seats: Stellite is commonly used in valve seats and other components exposed to high wear and corrosion in industrial applications.