Alloy 908 UNS N09908: A High-Performance Superalloy
In the demanding world of advanced engineering, materials must withstand extreme conditions. Alloy 908 UNS N09908 stands out as a premier iron-nickel-cobalt superalloy specifically engineered for cryogenic applications. Its unique combination of properties makes it indispensable in cutting-edge technologies, particularly in aerospace and high-energy physics.
Key Properties and Characteristics
Alloy 908 is renowned for its exceptionally low coefficient of thermal expansion (CTE), which is carefully matched to that of niobium. This critical feature minimizes thermal stress when the alloy is bonded to superconducting materials. Furthermore, it offers high strength and good ductility at cryogenic temperatures down to 4K (-452°F). Its excellent fracture toughness and fatigue resistance ensure long-term reliability in critical structures.
Primary Applications and Uses
The primary application for Alloy 908 UNS N09908 is in the construction of superconducting magnets. These magnets are vital for Magnetic Resonance Imaging (MRI) systems in healthcare and particle accelerators in scientific research, like the Large Hadron Collider. Its stability under intense magnetic fields and ultra-low temperatures is unmatched.
Technical Specifications Overview
Conforming to UNS N09908, this alloy’s composition is precisely controlled. It is primarily iron-nickel based with significant cobalt, niobium, and titanium additions. It is available in various forms, including bar, wire, sheet, and plate. For advanced manufacturing, it is also offered as gas-atomized powder for additive manufacturing processes, enabling complex component geometries.
Frequently Asked Questions (FAQ)
What makes Alloy 908 suitable for cryogenic use?
Its tailored low thermal expansion prevents cracking when cooled alongside superconducting elements, maintaining structural integrity.
Can Alloy 908 be welded?
Yes, but it requires specialized techniques due to its composition. Post-weld heat treatment is often necessary to restore optimal properties.
Where can I source quality Alloy 908 material?
It is produced by specialized mills and powder suppliers catering to high-tech industries.
Ready to Specify This Advanced Material?
If your project involves extreme temperatures and requires unmatched dimensional stability, Alloy 908 UNS N09908 is the engineered solution. For detailed datasheets, availability of forms including specialized powder for 3D printing, and technical support, contact a leading supplier today to discuss your application requirements.