EN AW-7075 · AlZn5.5MgCu
The reference high-strength aluminum since 1943: T6 tempers reach the strength of structural steel at 35% of the weight. T73xx variants trade ~15% strength for immunity to stress-corrosion cracking; clad sheet restores surface protection.
Material Data
Composition and physical properties
| Element | Limit / range |
|---|---|
| Si | ≤ 0.40 |
| Fe | ≤ 0.50 |
| Cu | 1.2 – 2.0 |
| Mn | ≤ 0.30 |
| Mg | 2.1 – 2.9 |
| Zn | 5.1 – 6.1 |
| Cr | 0.18 – 0.28 |
| Ti | ≤ 0.20 |
| Al | balance |
Limits per EN 573-3 / applicable registration. The governing specification on your order prevails.
| Property | Value |
|---|---|
| Density | 2.81 g/cm³ |
| Melting range | 477 – 635 °C |
| Thermal expansion (20–100 °C) | 23.4 µm/m·K |
| Elastic modulus | 71.7 GPa |
| Thermal conductivity | 130 W/m·K |
| Electrical conductivity | 33 % 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) |
|---|---|---|---|---|
| O | 105 | 230 | 16 | 60 |
| W / F | — | — | — | — |
| T6 / T651 / T6510 / T6511 / T62 | 505 | 570 | 10 | 150 |
| T7 (typ.) | 450 | 520 | 10 | 140 |
| T73 / T7351 / T73510 / T73511 | 435 | 505 | 12 | 135 |
| T76 / T7651 | 470 | 540 | 10 | 145 |
Designations & Standards
How this alloy appears on drawings
| System | Designation |
|---|---|
| ISO / EN designation | AlZn5.5MgCu |
| EN numeric | EN AW-7075 |
| UNS | A97075 |
| Werkstoff-Nr. | 3.4365 |
| Common product standards | AMS 4044, AMS 4045, AMS 4078, AMS 4166, AMS QQ-A-250/12, QQ-A-250/13 (Alclad), QQ-A-250/24, AMS QQ-A-250/25, /26 (clad), QQ-A-200/11, QQ-A-225/9 · ASTM B209, B211, B221 · BS L170 · EN 485 · WNr 3.4365 |
Supply Program
Available from Lipol as
| Product form | Standard | Alloy | Temper | Category |
|---|---|---|---|---|
| Plate | AMS 4078 | 7075 | T7351 | Aerospace & Defense |
| Plate | QQ-A-250/24 | 7075 | T7651 | Aerospace & Defense |
| Sheet | QQ-A-250/12 | 7075 | F | Aerospace & Defense |
| Sheet | AMS 4044 | 7075 | O | Aerospace & Defense |
| Sheet | QQ-A-250/13 | 7075 Alclad | T62 | Aerospace & Defense |
| Sheet | AMS QQ-A-250/26 | 7075 clad 7011 | T76 | Aerospace & Defense |
| Sheet | AMS QQ-A-250/25 | 7075 clad 7072 | T76 | Aerospace & Defense |
| Bar / Flat | QQ-A-225/9 | 7075 | T4 | Aerospace & Defense |
| Bar / Flat | QQ-A-200/11 | 7075 | T6510 | Aerospace & Defense |
| Tube / Profile / Extrusion | AMS 4166 | 7075 | T73 | Aerospace & Defense |
| Tube / Profile / Extrusion | ASTM B221 | 7075 | T7 | Aerospace & Defense |
| Plate | EN AW | 7075 | T651 | Machinery, Automotive & Mold |
| Plate | ASTM B209 | 7075 | W | General Industry |
| Plate | BS L170 | 7075 | T6511 | General Industry |
| Cold-Drawn Bar | EN 754-2 | 7075 | T6 | Cold Drawing |
| Cold-Drawn Bar | EN 754-2 | 7075 | T73511 | Cold Drawing |
| Cold-Drawn Tube | EN 754-7/-8 | 7075 | T73510 | Cold Drawing |
Additional tempers, forms and specifications available on request — the table shows the standard program.
Applications
Where EN AW-7075 is the right answer
- Aircraft structural components
- Molds and high-performance tooling
- Actuators, gears and shafts
- Defense and ordnance parts
- Motorsport suspension
Specifying EN AW-7075?
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-7075 is the right alloy?
Describe the application — load, environment, joining, finishing — and our engineers will confirm the choice or propose a better-value alternative.