Low Cost, Substantially Zr-Free Aluminum-Lithium Alloy For Thin Sheet Product With High Formability
Patent No. EP3495520 (titled "Low Cost, Substantially Zr-Free Aluminum-Lithium Alloy For Thin Sheet Product With High Formability") was filed by Kaiser Aluminum Fabricated Products on Dec 4, 2018. The application was issued on Jun 7, 2023.
Patent Summary
A low-cost, high-formability aluminum-lithium alloy for aerospace applications, comprising 3.2-4.1 wt% Cu, 1.0-1.8 wt% Li, 0.8-1.2 wt% Mg, and incidental elements, with a Zr-free composition and no intentional Ag addition. The alloy exhibits improved formability, strength, and corrosion resistance compared to conventional Al-Li alloys, while maintaining a low density and cost structure suitable for aircraft fuselage sheet and light-gauge plate applications.
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EP3495520
- Application Number
- EP18210045A
- Filing Date
- Dec 4, 2018
- Status
- Granted And Under Opposition
- May 5, 2023
- Publication Date
- Jun 7, 2023
- External Links
- Slate, Register , Google Patents