EN AW-2124 · AlCu4Mg1
A high-purity version of 2024 with tightened iron and silicon limits, developed for thick aerospace plate. The cleaner chemistry raises fracture toughness and short-transverse properties in heavy sections.
Material Data
Composition and physical properties
| Element | Limit / range |
|---|---|
| Si | ≤ 0.20 |
| Fe | ≤ 0.30 |
| Cu | 3.8 – 4.9 |
| Mn | 0.30 – 0.9 |
| Mg | 1.2 – 1.8 |
| Zn | ≤ 0.25 |
| Ti | ≤ 0.15 |
| Al | balance |
Limits per EN 573-3 / applicable registration. The governing specification on your order prevails.
| Property | Value |
|---|---|
| Density | 2.78 g/cm³ |
| Melting range | 502 – 638 °C |
| Thermal expansion (20–100 °C) | 23.2 µm/m·K |
| Elastic modulus | 73.1 GPa |
| Thermal conductivity | 130 W/m·K |
| Electrical conductivity | 32 % 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.
| Temper | Yield strength (MPa) | Tensile strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| T851 | 440 | 485 | 8 | 128 |
| T8151 | 420 | 470 | 9 | 125 |
| T6 (drawn) | 395 | 475 | 8 | 125 |
Designations & Standards
How this alloy appears on drawings
| System | Designation |
|---|---|
| ISO / EN designation | AlCu4Mg1 |
| EN numeric | EN AW-2124 |
| UNS | A92124 |
| Werkstoff-Nr. | — |
| Common product standards | AMS 4221, AMS QQ-A-250/29 · ASTM B209 · UNS A92124 |
Supply Program
Available from Lipol as
| Product form | Standard | Alloy | Temper | Category |
|---|---|---|---|---|
| Plate | AMS QQ-A-250/29 | 2124 | T851 | Aerospace & Defense |
| Plate | AMS 4221 | 2124 | T8151 | Aerospace & Defense |
| Cold-Drawn Bar | EN 754-2 | 2124 | T6 | Cold Drawing |
Additional tempers, forms and specifications available on request — the table shows the standard program.
Applications
Where EN AW-2124 is the right answer
- Thick aerospace structural plate
- Bulkheads and wing spars
- Machined fittings from heavy stock
Specifying EN AW-2124?
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.
Request a QuoteMaterial Engineering
Not sure EN AW-2124 is the right alloy?
Describe the application — load, environment, joining, finishing — and our engineers will confirm the choice or propose a better-value alternative.