ALUMINIUM ALLOY

Aluminium Alloy 2090

Aluminium Alloy 2090 is listed in the ALUMINIUM ALLOY material family. The reference data below should be checked against the governing product specification, product form and delivery condition before selection or certification.

Alloy 2090
MATERIAL INTRODUCTION

Aluminium Alloy 2090

The reference chemistry table for Aluminium Alloy 2090 lists Aluminium (Al): Remainder; Copper (Cu): 2.4 – 3.2%; Lithium (Li): 1.7 – 2.3%; Silver (Ag): 0.25 – 0.7%. Confirm exact limits and analysis tolerances against the governing standard and product form.

The mechanical-property table for Aluminium Alloy 2090 lists Tensile Strength: 350 – 450 MPa; Yield Strength: 250 – 350 MPa; Elongation: 8 – 15 %; Hardness: Approx. 90 – 120 HB. These are reference entries; supplied condition, dimensions, test method and governing specification control the requirements, and the figures are not design allowables.

No one-to-one Werkstoff number was verified for Aluminium Alloy 2090 in the cross-reference sources checked for this update. Confirm any proposed EN alternative against the governing specification.

View Technical Information →
TECHNICAL INFORMATION

Material Identification

Standard identification and material designation information for Aluminium Alloy 2090.

Material Aluminium Alloy 2090
UNS Number K90900
Werkstoff Number No verified one-to-one equivalent
Material Type Aluminium-Lithium Alloy
MATERIAL PROPERTIES

Chemical Composition

The reference chemistry table lists Aluminium (Al): Remainder; Copper (Cu): 2.4 – 3.2%; Lithium (Li): 1.7 – 2.3%; Silver (Ag): 0.25 – 0.7%. Confirm the governing standard, product analysis tolerances and product form before ordering.

Element Symbol Composition
Aluminium Al Remainder
Copper Cu 2.4 – 3.2%
Lithium Li 1.7 – 2.3%
Silver Ag 0.25 – 0.7%
Magnesium Mg 0.0 – 0.5%
Zirconium Zr 0.08 – 0.16%
Other Elements — Limited according to applicable specification
PERFORMANCE DATA

Mechanical Properties

The table reports Tensile Strength: 350 – 450 MPa; Yield Strength: 250 – 350 MPa; Elongation: 8 – 15 %; Hardness: Approx. 90 – 120 HB as reference data for Aluminium Alloy 2090. Actual requirements depend on condition, dimensions, test method and specification; these values are not design allowables.

Property Value Unit
Tensile Strength 350 – 450 MPa
Yield Strength 250 – 350 MPa
Elongation 8 – 15 %
Hardness Approx. 90 – 120 HB
MATERIAL DATA

Physical Properties

Density Approx. 2.59 g/cm³
Elastic Modulus Approx. 77 GPa
Thermal Conductivity Approx. 150 W/m·K
Specific Heat Approx. 950 J/kg·K
Melting Range Approx. 515 – 640°C
WHY SELECT THIS MATERIAL

Material Characteristics

Aluminium Alloy 2090 is an aluminium-lithium alloy developed for low density and high stiffness-to-weight performance in aerospace-oriented applications.

01

Low Density

Lithium additions reduce density relative to conventional high-strength aluminium alloys.

02

High Specific Stiffness

The combination of lower density and higher modulus supports lightweight design.

03

Aerospace Focus

Developed for weight-sensitive aerospace structures.

04

Specialized Processing

Material selection and processing should follow the applicable alloy specification closely.

Aluminium Alloy 2090 Bolting Products

INDUSTRIAL USE

Typical Applications

Aluminium Alloy 2090 is selected for applications that match its specific strength, corrosion, forming, machining and service characteristics.

01

Aerospace Structures

Used for selected lightweight aerospace structures and components.

02

Aircraft Components

Suitable for weight-sensitive designs where stiffness and density are critical.

03

Space & Defense

May be selected for specialized lightweight structural applications.

04

Research & Development

Useful where advanced aluminium-lithium alloy performance is being evaluated.

ENGINEERING GUIDE

Engineering Considerations

Specification Control

Use certified material data because alloy 2090 is more specialized than common commercial grades.

Processing

Forming and joining practices should follow the specified temper and product route.

Corrosion & Joining

Evaluate corrosion protection and joining compatibility during design.

COMMON QUESTIONS

Frequently Asked Questions

What is the Werkstoff number for Aluminium Alloy 2090?

No one-to-one Werkstoff number was verified for Aluminium Alloy 2090 in the cross-reference sources checked for this update, so this page does not assign a number. Confirm any proposed EN alternative against the applicable product standard and supplier certificate before substitution.

Is Aluminium Alloy 2090 heat treatable?

Yes. Alloy 2090 is designed as a precipitation-hardening aluminium-lithium alloy.

Is Aluminium Alloy 2090 corrosion resistant?

Corrosion performance depends on temper, processing and protection; aerospace service should be assessed specifically.

Where is Aluminium Alloy 2090 used?

It is associated mainly with specialized aerospace and other weight-sensitive structural applications.

ENGINEERING SUPPORT

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