Aluminium alloy 5454 offers very good corrosion resistance, particularly to seawater and general atmospheric conditions. It is a medium- to high-strength aluminium–magnesium alloy, with strength levels similar to alloy 5754, and maintains good mechanical performance in the temperature range of 65 °C to 170 °C. Alloy 5454 also provides high fatigue strength, making it suitable for cyclic loading applications. However, it is not recommended for fine or complex extrusions.
Alloy 5454 is typically used in:
Alloy 5454-H22
Spec: BS EN 573-3:2009
| Chemical Element | % Present |
|---|---|
| Manganese (Mn) | 0.50 – 1.00 |
| Iron (Fe) | 0.00 – 0.40 |
| Magnesium (Mg) | 2.40 – 3.00 |
| Silicon (Si) | 0.00 – 0.25 |
| Chromium (Cr) | 0.05 – 0.20 |
| Titanium (Ti) | 0.00 – 0.20 |
| Zinc (Zn) | 0.00 – 0.25 |
| Copper (Cu) | 0.00 – 0.10 |
| Aluminium (Al) | Balance |
| Other (Each) | 0.00 – 0.05 |
| Others (Total) | 0.00 – 0.15 |
| Property | Value |
|---|---|
| Density | 2.69 g/cm³ |
| Melting Point | 645 °C |
| Thermal Expansion | 23.6 × 10⁻⁶ /K |
| Modulus of Elasticity | 70.5 GPa |
| Thermal Conductivity | 135 W/m·K |
| Electrical Conductivity | 34 % IACS |
Spec: BS EN 485-2:2008
| Property | Value |
|---|---|
| Proof Stress | ≥ 180 MPa |
| Tensile Strength | 250 – 305 MPa |
| Hardness (Brinell) | 74 HB |
Aluminium alloy 5454 corresponds to the following designations (not direct equivalents):
The most commonly supplied tempers for aluminium alloy 5454 include:
Alloy 5454 is supplied in most forms; however, it is not suitable for fine or complex extrusions:
