8090 is a high-performance aluminum-lithium (Al-Li) alloy developed for aerospace and advanced engineering structures where weight reduction is critical. Compared with conventional 2xxx and 7xxx alloys, 8090 offers roughly 8-10% lower density and a higher stiffness-to-weight ratio while retaining good strength, fatigue resistance, and corrosion performance. Linsy supplies 8090 in sheet, plate, bar, tube, wire, and custom extruded profiles, with standard tempers T3, T4, T8, and O. Custom thicknesses, diameters, and lengths can be produced to drawing, and every order ships with an MTC (Mill Test Certificate).
Available forms: sheet / plate / coil / bar / tube / wire / profile
Common tempers: O / T3 / T4 / T8
Processing support: CNC machining / precision cutting / anodizing / cladding
Quality documents: MTC report with every order
8090 (EN AW-8090, UNS A98090, designation AlLi2.5Cu1.3Mg1) is an aluminum-lithium alloy in the 8xxx series. The deliberate addition of lithium lowers density and raises the elastic modulus, giving designers a material that is lighter and stiffer than traditional aerospace aluminum. Copper and magnesium provide precipitation strengthening, while controlled zirconium additions refine the grain structure. 8090 is used where every kilogram matters — primarily aircraft fuselage skins, wing panels, and structural components for aerospace and high-end transport.
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| 8090 Sheet / Coil | T3, T4, T8, O | 0.5 – 80 | 500 – 2600 | 500 – 12000 |
| Thickness, width, and length can be customized to customer drawings. | ||||
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| 8090 Plate | T8, T3, O | 6 – 200 | 500 – 2600 | 1000 – 12000 |
| Form | Temper | Diameter / OD (mm) | Wall (mm) | Length (mm) |
|---|---|---|---|---|
| 8090 Round Bar | T3, T4, T8, O | 6 – 400 | – | 1000 – 6000 |
| 8090 Tube | T3, T4, T8, O | 10 – 400 | 1 – 40 | 1000 – 6000 |
| Item | Specification |
|---|---|
| Size range | 0.8 – 30 mm |
| Temper | T4, T6, O |
| Weight per coil | Min 50 kg |
| Size tolerance | ± 0.02 mm |
| Custom wire sizes and spool weights available on request. | |
| Standard | Designation |
|---|---|
| AA (Aluminum Association) | 8090 |
| EN AW | EN AW-8090 |
| UNS | A98090 |
| Chemical designation | AlLi2.5Cu1.3Mg1 |
| Element | Content (%) |
|---|---|
| Si | 0.10 max |
| Fe | 0.12 max |
| Cu | 1.0 – 1.6 |
| Mn | 0.10 max |
| Mg | 0.6 – 1.3 |
| Li | 2.2 – 2.7 |
| Zn | 0.10 max |
| Ti | 0.10 max |
| Zr | 0.04 – 0.16 |
| Others (each) | 0.05 max |
| Others (total) | 0.15 max |
| Al | Remainder |
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| T8 (typical) | 450 – 550 | 390 – 480 | 7 – 12 |
| T4 (typical) | 350 – 420 | 240 – 300 | 10 – 15 |
| O (annealed) | 240 – 300 | 120 – 180 | 12 – 18 |
| Values are typical for rolled / extruded product and should be confirmed against the mill certificate for a specific order. | |||
T8 — peak-aged condition delivering the highest strength and stiffness; the default choice for primary aerospace structure. T4 — solution heat-treated and naturally aged; higher ductility for forming before final aging. O — fully annealed, used where maximum formability is needed prior to fabrication. Select T8 for load-bearing skins and stiffeners, T4 where forming is required, and O for the softest starting condition.
The lithium addition lowers density by about 8-10% and raises Young’s modulus versus standard aerospace alloys, improving the stiffness-to-weight ratio of structures.
8090 offers good fatigue crack growth resistance and acceptable general corrosion performance; clad sheet versions are available for enhanced corrosion protection.
The alloy machines well in the T8 condition. Forming is best carried out in T4 or O tempers before final aging. Welding is limited and should be evaluated case by case.
8090 is typically supplied in the T8 or T4 condition. CNC machining, precision sawing, and waterjet or laser cutting are supported. Anodizing and cladding can be applied for corrosion protection and appearance. Because Al-Li alloys are sensitive to hydrogen and welding practice, any joining or heat-treatment outside the supplied temper should be reviewed with the engineering team before production.
Every 8090 order ships with an MTC (Mill Test Certificate) reporting actual chemical analysis and mechanical results. Additional inspection such as ultrasonic testing, penetration testing, or third-party verification can be arranged on request.
Linsy is a Shenzhen-based aluminum supplier with more than 20 years of production experience covering the 1000 to 8000 series. We support custom sizes, tempers, and light processing for aerospace and engineering buyers, and back each shipment with full mill documentation. Stable material traceability and responsive quoting help procurement teams move from inquiry to delivery with confidence.
For background on aluminum-lithium alloys and their aerospace use, see the overview articles below (external references — verify and replace with Linsy-owned content before publishing):
No. 8090 (AlLi2.5Cu1.3Mg1) is a distinct grade with its own composition and temper practice. Some sources confuse it with newer Al-Li grades such as 2099; always confirm the AA number and temper on the mill certificate.
T8 is the usual choice for primary structure where peak strength and stiffness are required. T4 is used where forming is needed before final aging.
Conventional fusion welding is generally limited for Al-Li alloys. Joining approaches should be evaluated with engineering support and confirmed against the application’s fatigue and corrosion requirements.
Depending on temper, size, and quantity, lead times generally range from 10 to 60 days. Confirm the exact schedule with your quote.
Yes. An MTC is supplied with every order, and additional third-party inspection can be arranged on request.
Yes. Thickness, diameter, width, and length can be produced to customer drawings within our standard capability range.
Linsy Advantages
Linsy Aluminum is a leading supplier of aluminum processing products, serving diverse industries including aerospace, general engineering, automotive, marine, shipbuilding and other specialized industrial applications.
We are committed to maintaining the highest standards of quality and environmental responsibility, as demonstrated by our certifications: ISO 9001:2008， ISO 14001:2004 and SGS.
