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EN AW-2618A · AlCu2Mg1.5Ni

An iron-nickel strengthened alloy that keeps its properties at temperatures where other aluminums soften — developed for supersonic airframes and still the standard for hot rotating parts like compressor wheels and pistons.

2.77g/cm³
Density
440MPa
Typical tensile strength (T851)
72GPa
Elastic modulus
2000
Series — Al-Cu high strength

Material Data

Composition and physical properties

Chemical composition (% by mass)
ElementLimit / range
Si≤ 0.25
Fe0.9 – 1.4
Cu1.2 – 1.8
Mg1.2 – 1.8
Ni0.8 – 1.4
Mn≤ 0.20
Zn≤ 0.15
Ti≤ 0.20
Albalance

Limits per EN 573-3 / applicable registration. The governing specification on your order prevails.

Physical properties (typical, room temperature)
PropertyValue
Density2.77 g/cm³
Melting range549 – 638 °C
Thermal expansion (20–100 °C)22.3 µm/m·K
Elastic modulus72 GPa
Thermal conductivity147 W/m·K
Electrical conductivity37 % IACS

Strength Data

Mechanical properties by temper

Typical room-temperature values for orientation. Design minimums depend on product form, thickness and the governing specification — request the applicable table with your inquiry.

Typical mechanical properties — EN AW-2618A (AlCu2Mg1.5Ni)
TemperYield strength (MPa)Tensile strength (MPa)Elongation (%)Hardness (HB)
T6 / T65113704309125
T8514104406135

Designations & Standards

How this alloy appears on drawings

Cross-reference designations
SystemDesignation
ISO / EN designationAlCu2Mg1.5Ni
EN numericEN AW-2618A
UNSA92618
Werkstoff-Nr.3.1924
Common product standardsAIR 9048.640 · ASTM B209, B211, B221 · EN 2123 · WNr 3.1924 · UNS A92618

Supply Program

Available from Lipol as

Catalog entries for EN AW-2618A
Product formStandardAlloyTemperCategory
PlateAIR 9048.6402618AT851Aerospace & Defense
Bar / FlatASTM B2212618AT6Aerospace & Defense
Bar / FlatASTM B2112618AT6511Aerospace & Defense

Additional tempers, forms and specifications available on request — the table shows the standard program.

Applications

Where EN AW-2618A is the right answer

  • Turbocharger compressor wheels
  • High-performance pistons
  • Supersonic aircraft structure
  • Hot-section fasteners and fittings

Specifying EN AW-2618A?

State the temper, product form, dimensions and governing standard from the tables above, and we will confirm availability with a firm price and delivery date — typically within one business day.

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Material Engineering

Not sure EN AW-2618A is the right alloy?

Describe the application — load, environment, joining, finishing — and our engineers will confirm the choice or propose a better-value alternative.

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