Alloy 908 UNS N09908: An Overview
In the demanding world of advanced engineering, materials must withstand extreme conditions. Alloy 908 UNS N09908 stands out as a premier solution, specifically engineered for cryogenic applications. This iron-nickel-cobalt superalloy offers a unique combination of properties that make it indispensable in high-tech industries.
Key Material Properties and Characteristics
The exceptional performance of Alloy 908 stems from its precise composition. It boasts an ultra-low coefficient of thermal expansion (CTE), which is carefully matched to high-strength composites. This characteristic is crucial for maintaining structural integrity across vast temperature ranges, from cryogenic levels up to 427°C (800°F). Furthermore, it delivers high strength, good ductility, and excellent fatigue resistance, ensuring long-term reliability in critical environments.
Primary Industrial Applications
Where is this specialized alloy used? Its primary application is in the aerospace sector, particularly for superconducting magnets in fusion energy research and advanced propulsion systems. The alloy’s ability to maintain dimensional stability under thermal stress makes it ideal for support structures, containment vessels, and magnet tie rods in projects like the International Thermonuclear Experimental Reactor (ITER).
Technical Specifications and Data
For engineers and procurement specialists, the technical data is paramount. Alloy 908 UNS N09908 typically conforms to specifications such as ASTM F1624. Its mechanical properties include a tensile strength exceeding 1,240 MPa and a yield strength over 1,030 MPa at room temperature. These specs, combined with its weldability and fabricability, provide a complete material solution for complex designs.
Frequently Asked Questions (FAQ)
Q: What is the main advantage of Alloy 908 over other cryogenic alloys?
A: Its standout feature is the controlled thermal expansion matched to composites, minimizing thermal stress in hybrid structures.
Q: Can Alloy 908 be welded or machined easily?
A: Yes, it is designed for good weldability and machinability, though following specific procedures for high-strength alloys is recommended.
Source Your High-Performance Material Today
Ready to integrate this high-performance superalloy into your next project? Sourcing certified material is critical for success. For guaranteed quality Alloy 908 UNS N09908 that meets stringent aerospace and research specifications, contact our expert team for a quote and technical data sheets to ensure your application’s integrity.