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Model No: Stellite 31
AMS 5382 / UNS R30031 / Stellite 31
Stellite 31 is a cobalt-base, high-temperature superalloy having high tensile and creep properties. It is superior in stress-rupture properties to many alloys commercially available, especially at 1700°F (926°C) and 1800°F (980°C).
Delivery :
FOB
minimum order :
100 kilograms
Supply Ability :
5000Tonkilograms / Month
Stock Time :
7-10Day
Country of Origin :
CHINA
Quantity :
Stellite 31 is a cobalt-base, high-temperature superalloy having high tensile and creep properties. It is superior in stress-rupture properties to many alloys commercially available, especially at 1700°F (926°C) and 1800°F (980°C).
Stellite 31 (UNS R30031) is resistant to oxidizing and reducing atmospheres up to 2100°F (1150°C). It has excellent resistance to thermal and mechanical shock. Due to its high-temperature properties, Stelllite 31 is often used in gas turbine engines in areas subject to hot gas erosion, as well as furnace working tools that require a combination of mechanical integrity and hot wear resistance.
Nominal Composition (Mass %) and Physical Properties
| Co | Cr | W | C | Ni | Others | Hardness | Density (deposit) | Melting Range |
| Base | 26 | 7.5 | 0.5 | 10.5 | Mo, Fe, Si | 25-35 HRC* | 8.61 g/cm3 0.311 lb/in3 | 1340-1395ºC 2245-2545ºF |
*Hardness dependent on amount of work hardening.
| SPECIFICATION | PRODUCT FORM |
| UNS R30031 | Castings, P/M Components, Powder |
| AMS 5382 | Castings |
| ASTM A732 Gr.31 | Castings |
Industrial Applications of Stellite 31
Valves and Fittings
Industries rely on Stellite 31 for manufacturing valves and fittings due to its excellent wear and corrosion resistance. These properties are crucial in environments where components face high mechanical stress and corrosive media. For instance, in the oil and gas industry, valves and fittings made from Stellite 31 endure harsh conditions like high pressure, temperature fluctuations, and exposure to acidic and alkaline environments. This ensures long-lasting and reliable performance.
Gas Turbine Engines and Aerospace
Gas turbine engines and aerospace applications demand materials that can withstand extreme conditions. Stellite 31 is ideal for these sectors due to its high-temperature stability, wear resistance, and resistance to hot gas erosion.
- Gas Turbine Engines: Components such as turbine blades, nozzles, and combustion chamber liners operate under intense temperatures and stresses. Stellite 31 retains its strength and hardness at elevated temperatures up to 2100°F (1150°C), ensuring efficiency and longevity. Its resistance to thermal shock and oxidation further enhances its suitability.
- Aerospace: In aerospace, Stellite 31 is used for bushings, valve seats, and other critical parts in jet engines. These components face intense mechanical loads and corrosive environments. The high-temperature capabilities of Stellite 31 ensure that aerospace components withstand thermal stresses, contributing to the safety and reliability of aircraft.
Power Generation
Stellite 31 plays a significant role in power generation, particularly in steam turbines. Its durability and resistance to wear are essential for components that must operate under extreme conditions for extended periods.
Applications: Turbine blades, nozzles, and other parts benefit from Stellite 31’s ability to resist creep and stress-rupture at elevated temperatures. This ensures the long-term stability and efficiency of power generation equipment.
Oil and Gas
The oil and gas industry extensively uses Stellite 31 for its excellent corrosion resistance and wear properties.
Examples: Valve seats, pump components, and wear rings must endure harsh operational conditions. Stellite 31’s resistance to corrosive chemicals and abrasive materials reduces maintenance needs and enhances operational efficiency.
Automotive
In the automotive sector, Stellite 31 is essential for high-stress and high-wear components.
Applications: Valve seats and engine parts benefit from the alloy’s ability to maintain hardness and wear resistance at high temperatures. This ensures the durability and reliability of critical engine parts, leading to improved performance and longevity of vehicles.
Chemical Processing
Chemical processing industries value Stellite 31 for its resistance to aggressive chemicals and high-temperature environments.
Uses:Heat exchangers, pump components, and reactor vessels benefit from its corrosion resistance and wear properties. This ensures the integrity and performance of chemical processing equipment.
Marine Engineering
Marine environments are highly corrosive, making Stellite 31 an ideal choice for marine engineering.
Applications: Propeller shafts, rudders, and pump wear rings benefit from Stellite 31’s corrosion resistance and mechanical strength. This reduces maintenance needs and enhances the safety and performance of marine vessels.
Mining
The mining industry demands durable materials to withstand abrasive and harsh conditions.
Examples: Drilling equipment, wear plates, and other components benefit from Stellite 31’s wear resistance and toughness. This ensures efficient operation and minimal downtime, increasing productivity and reducing operational costs.
General Industrial
In general industrial applications, Stellite 31 is used for manufacturing wear-resistant tooling.
Applications: Cutting tools and extrusion dies benefit from the alloy’s hardness and wear resistance. This results in tools that offer superior performance and longevity, improving the efficiency and quality of industrial operations.
Stellite 31’s unique properties make it a versatile and reliable material across various industries, ensuring components perform optimally under demanding conditions.
