EN AW-5456 · AlMg5Mn1
The highest-magnesium structural alloy in regular supply — stronger than 5083 and equally weldable, specified where marine plating must carry maximum load per kilogram.
Material Data
Composition and physical properties
| Element | Limit / range |
|---|---|
| Si | ≤ 0.25 |
| Fe | ≤ 0.40 |
| Cu | ≤ 0.10 |
| Mn | 0.50 – 1.0 |
| Mg | 4.7 – 5.5 |
| Cr | 0.05 – 0.20 |
| Zn | ≤ 0.25 |
| Ti | ≤ 0.20 |
| Al | balance |
Limits per EN 573-3 / applicable registration. The governing specification on your order prevails.
| Property | Value |
|---|---|
| Density | 2.66 g/cm³ |
| Melting range | 570 – 640 °C |
| Thermal expansion (20–100 °C) | 23.9 µm/m·K |
| Elastic modulus | 70.3 GPa |
| Thermal conductivity | 116 W/m·K |
| Electrical conductivity | 29 % 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 | 160 | 310 | 22 | 80 |
| H111 | 165 | 315 | 16 | 85 |
| H116 / H321 | 230 | 315 | 12 | 90 |
Designations & Standards
How this alloy appears on drawings
| System | Designation |
|---|---|
| ISO / EN designation | AlMg5Mn1 |
| EN numeric | EN AW-5456 |
| UNS | A95456 |
| Werkstoff-Nr. | — |
| Common product standards | AMS QQ-A-250/9, AMS QQ-A-200/7 · ASTM B209, B928 · UNS A95456 |
Supply Program
Available from Lipol as
| Product form | Standard | Alloy | Temper | Category |
|---|---|---|---|---|
| Plate | AMS QQ-A-250/9 | 5456 | O | Aerospace & Defense |
| Plate | ASTM B928 | 5456 | H321 | Aerospace & Defense |
| Sheet | ASTM B209 | 5456 | H116 | Aerospace & Defense |
| Bar / Flat | AMS QQ-A-200/7 | 5456 | H111 | Aerospace & Defense |
Additional tempers, forms and specifications available on request — the table shows the standard program.
Applications
Where EN AW-5456 is the right answer
- High-speed vessel hulls
- Naval superstructures
- Armor plate applications
- Heavy welded structures
Specifying EN AW-5456?
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-5456 is the right alloy?
Describe the application — load, environment, joining, finishing — and our engineers will confirm the choice or propose a better-value alternative.