EN AW-7068 · AlZn5MgCu (7068)
The strongest commercially available aluminum extrusion alloy — tensile strength in steel territory at a third of the density. Specified where every gram is mission-critical and price is secondary.
Material Data
Composition and physical properties
| Element | Limit / range |
|---|---|
| Si | ≤ 0.12 |
| Fe | ≤ 0.15 |
| Cu | 1.6 – 2.4 |
| Mn | ≤ 0.10 |
| Mg | 2.2 – 3.0 |
| Zn | 7.3 – 8.3 |
| Zr | 0.05 – 0.15 |
| Al | balance |
Limits per EN 573-3 / applicable registration. The governing specification on your order prevails.
| Property | Value |
|---|---|
| Density | 2.85 g/cm³ |
| Melting range | 476 – 635 °C |
| Thermal expansion (20–100 °C) | 23.4 µm/m·K |
| Elastic modulus | 73 GPa |
| Thermal conductivity | 130 W/m·K |
| Electrical conductivity | 30 % 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) |
|---|---|---|---|---|
| T6511 | 590 | 640 | 6 | 175 |
Designations & Standards
How this alloy appears on drawings
| System | Designation |
|---|---|
| ISO / EN designation | AlZn5MgCu (7068) |
| EN numeric | EN AW-7068 |
| UNS | A97068 |
| Werkstoff-Nr. | — |
| Common product standards | AMS 4331 · UNS A97068 · producer registrations |
Supply Program
Available from Lipol as
| Product form | Standard | Alloy | Temper | Category |
|---|---|---|---|---|
| Tube / Profile / Extrusion | AMS 4331 | 7068 | T6511 | Aerospace & Defense |
Additional tempers, forms and specifications available on request — the table shows the standard program.
Applications
Where EN AW-7068 is the right answer
- Ordnance and defense components
- Racing and aerospace fasteners
- Connecting rods and suspension parts
- High-performance bicycle components
Specifying EN AW-7068?
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-7068 is the right alloy?
Describe the application — load, environment, joining, finishing — and our engineers will confirm the choice or propose a better-value alternative.