24 July 2021 5000 Series Aluminum Alloy
5457 Aluminum Alloy Plate
5457 aluminum alloy is a 5000-series aluminum alloy: the main alloying addition is magnesium, and it is formulated for primary forming into wrought products. 5457 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-5457. A95457 is the UNS number. The aluminum 5457 alloy is a wrought alloy type. The following datasheet will provide more detail on this aluminum 5457 alloy.
Chemical Composition:
| Component Elements Properties | Metric | English |
|---|---|---|
| Aluminum, Al | <= 97.7 % | <= 97.7 % |
| Copper, Cu | <= 0.20 % | <= 0.20 % |
| Iron, Fe | <= 0.10 % | <= 0.10 % |
| Magnesium, Mg | 0.80 - 1.2 % | 0.80 - 1.2 % |
| Manganese, Mn | 0.15 - 0.45 % | 0.15 - 0.45 % |
| Other, each | <= 0.03 % | <= 0.03 % |
| Other, total | <= 0.10 % | <= 0.10 % |
| Silicon, Si | <= 0.08 % | <= 0.08 % |
| Vanadium, V | <= 0.05 % | <= 0.05 % |
| Zinc, Zn | <= 0.05 % | <= 0.05 % |
Mechanical Properties:
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 32 | 32 | AA; Typical; 500 g load; 10 mm ball |
| Tensile Strength, Ultimate | 131 MPa | 19000 psi | AA; Typical |
| Tensile Strength, Yield | 48.3 MPa | 7000 psi | AA; Typical |
| Elongation at Break | 22 % @Thickness 1.59 mm | 22 % @Thickness 0.0625 in | AA; Typical |
| Modulus of Elasticity | 68.9 GPa | 10000 ksi | AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus. |
| Poissons Ratio | 0.33 | 0.33 | |
| Shear Modulus | 26.0 GPa | 3770 ksi | Calculated |
| Shear Strength | 82.7 MPa | 12000 psi | AA; Typical |
Thermal Properties:
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 21.9 µm/m-°C @Temperature -50.0 - 20.0 °C | 12.2 µin/in-°F @Temperature -58.0 - 68.0 °F | |
| 23.7 µm/m-°C @Temperature 20.0 - 100 °C | 13.2 µin/in-°F @Temperature 68.0 - 212 °F | ||
| 23.8 µm/m-°C @Temperature 20.0 - 100 °C | 13.2 µin/in-°F @Temperature 68.0 - 212 °F | AA; Typical; average over range | |
| 24.6 µm/m-°C @Temperature 20.0 - 200 °C | 13.7 µin/in-°F @Temperature 68.0 - 392 °F | ||
| 25.6 µm/m-°C @Temperature 20.0 - 300 °C | 14.2 µin/in-°F @Temperature 68.0 - 572 °F | ||
| Specific Heat Capacity | 0.880 J/g-°C | 0.210 BTU/lb-°F | Estimated from trends in similar Al alloys. |
| Thermal Conductivity | 176 W/m-K | 1220 BTU-in/hr-ft²-°F | AA; Typical at 77°F |
| Melting Point | 629.4 - 654 °C | 1165 - 1210 °F | AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness |
| Solidus | 629.4 °C | 1165 °F | AA; Typical |
| Liquidus | 654 °C | 1210 °F | AA; Typical |
Machinability:
Aluminium / Aluminum 5456 alloy has poor machinability. If machining is performed, oil lubricants and carbide tooling should be used.
Forming:
Formability of Aluminium / Aluminum 5456 alloy is more difficult than the other Aluminium / Aluminum alloys. It should not be extensively cold worked.
Welding:
Arc welding is the preferred welding method for Aluminium / Aluminum 5456 alloy, thus making it useful structural applications. Gas welding can also be used but results are not as good as arc welding.
Hot Working:
Aluminium / Aluminum 5456 alloy can be hot worked at 218°C (425°F). This helps in avoiding the impact of high stress on extensively cold worked shapes.
Cold Working:
Aluminium / Aluminum 5456 alloy has good cold working capacity but extensive cold working (over 20% reduction) should be avoided as this causes stress corrosion cracking when temperatures reach 66°C (150°F).
Annealing:
Annealing of Aluminium / Aluminum 5456 alloy can be performed at 343°C (650°F). This should be followed by air cooling.
Hardening:
Aluminium / Aluminum 5456 alloy can be hardened only by cold working (limited).
Applications:
- Marine applications
- High strength welded structures
- Pressure vessels