AMS 5537 - L605 Cobalt Alloy Sheet, Strip, Foil & Plate
AMS 5537 covers the specifications for L605 (Haynes 25), a cobalt, chromium, tungsten, and nickel-based alloy that is widely used for its high strength, oxidation resistance, and wear resistance at elevated temperatures. The spec covers corrosion and heat-resistant L605 in solution heat-treated condition, including sheet, strip, foil, and plate.
Product Forms & Size Range of L605
L-605 Round Bar diameters range from 0.25″ to 7.00″ diameter.
L-605 Plate Thickness ranges from 0.1875″ to 2.50″ Thick
L-605 Sheet Thicknesses range from 0.002″ to .156″ Thick.
Overview of L605 per AMS 5537
L605 per AMS 5537 exhibits outstanding strength up to 1500°F (816°C) and oxidation resistance up to 2000°F (1093°C).
The alloy’s performance is derived from solid-solution strengthening by tungsten and chromium-based oxidation resistance, offering long-term stability under severe service conditions.
Chemical Composition (Nominal):
52% Co – 20% Cr – 10% Ni – 15% W
Key Properties:
- Exceptional high-temperature tensile and creep strength
- Excellent oxidation and corrosion resistance
- Superior resistance to wear, galling, and sulfidation
- Stable microstructure after solution heat treatment (2150°F–2250°F)
- Maintains ductility after long-term exposure
Applications of Cobalt Alloy L605
- Aircraft gas turbine engines
- Combustion liners and turbine vanes
- Industrial furnace components (muffles, kiln liners, heat shields)
- Marine turbines and exhaust systems
- Medical devices and precision springs in extreme environments
Related Specifications
SHEET & PLATE
Sheets and plates for high-temperature aerospace and industrial applications.
BARS & FORGINGS
Bars and forgings designed for high-strength, creep, and fatigue-resistant components.
Certified Material for Critical Service
All L605 material supplied by Fighter Jet Metals is:
- Certified to AMS 5537, AMS 5759, and ASTM F90 standards
- Supplied with Material Test Reports (MTRs) for full heat traceability
- Produced under AS9100 and ISO 9001 quality management systems
- Suitable for aerospace, defense, and industrial turbine applications
These certifications ensure consistent metallurgical integrity and dependable high-temperature performance.