24 July 2021 5000 Series Aluminum Alloy
5456 Aluminum Alloy Plate
5456 aluminium alloy is an alloy in the wrought aluminium-magnesium family (5000 or 5xxx series). While it is closely related to 5356 aluminium alloy (Aluminum Association designations that only differ in the second digit are variations on the same alloy), it is used in structural applications, like most other aluminium-magnesium alloys, and not as filler for welding. As a wrought alloy, it can be formed by rolling, extrusion, and forging (although forging is not common), but not casting. It can be cold worked to produce tempers with a higher strength but a lower ductility. It is susceptible to exfoliation corrosion when held at temperatures above 65 °C (150 °F) for extended periods of time.
Chemical Composition:
| Component Elements Properties | Metric | English |
|---|---|---|
| Aluminum, Al | 91.9 - 94.8 % | 91.9 - 94.8 % |
| Chromium, Cr | 0.05 - 0.20 % | 0.05 - 0.20 % |
| Copper, Cu | <= 0.10 % | <= 0.10 % |
| Iron, Fe | <= 0.40 % | <= 0.40 % |
| Magnesium, Mg | 4.7 - 5.5 % | 4.7 - 5.5 % |
| Manganese, Mn | 0.50 - 1.0 % | 0.50 - 1.0 % |
| Other, each | <= 0.05 % | <= 0.05 % |
| Other, total | <= 0.15 % | <= 0.15 % |
| Silicon, Si | <= 0.25 % | <= 0.25 % |
| Titanium, Ti | <= 0.20 % | <= 0.20 % |
| Zinc, Zn | <= 0.25 % | <= 0.25 % |
Mechanical Properties:
| Mechanical Properties | Metric | English | Comments |
|---|---|---|---|
| Hardness, Brinell | 90 | 90 | AA; Typical; 500 g load; 10 mm ball |
| Hardness, Knoop | 114 | 114 | Converted from Brinell Hardness Value |
| Hardness, Rockwell A | 38.2 | 38.2 | Converted from Brinell Hardness Value |
| Hardness, Rockwell B | 56 | 56 | Converted from Brinell Hardness Value |
| Hardness, Vickers | 101 | 101 | Converted from Brinell Hardness Value |
| Tensile Strength, Ultimate | 352 MPa | 51000 psi | AA; Typical |
| >= 275 MPa @Thickness 80.0 - 110 mm | >= 39900 psi @Thickness 3.15 - 4.33 in | ||
| >= 285 MPa @Thickness 40.0 - 80.0 mm | >= 41300 psi @Thickness 1.57 - 3.15 in | ||
| >= 305 MPa @Thickness 30.0 - 40.0 mm | >= 44200 psi @Thickness 1.18 - 1.57 in | ||
| >= 315 MPa @Thickness 1.60 - 30.0 mm | >= 45700 psi @Thickness 0.0630 - 1.18 in | ||
| 285 - 385 MPa @Thickness 40.0 - 80.0 mm | 41300 - 55800 psi @Thickness 1.57 - 3.15 in | H321 | |
| 305 - 385 MPa @Thickness 12.5 - 40.0 mm | 44200 - 55800 psi @Thickness 0.492 - 1.57 in | H321 | |
| 315 - 405 MPa @Thickness 4.00 - 12.5 mm | 45700 - 58700 psi @Thickness 0.157 - 0.492 in | H321 | |
| 330 - 400 MPa @Thickness 1.20 - 6.30 mm | 47900 - 58000 psi @Thickness 0.0472 - 0.248 in | H323 | |
| 365 - 435 MPa @Thickness 1.20 - 6.30 mm | 52900 - 63100 psi @Thickness 0.0472 - 0.248 in | H343 | |
| Tensile Strength, Yield | 255 MPa | 37000 psi | AA; Typical |
| >= 170 MPa @Thickness 80.0 - 110 mm | >= 24700 psi @Thickness 3.15 - 4.33 in | ||
| >= 200 MPa @Thickness 40.0 - 80.0 mm | >= 29000 psi @Thickness 1.57 - 3.15 in | ||
| >= 215 MPa @Thickness 30.0 - 40.0 mm | >= 31200 psi @Thickness 1.18 - 1.57 in | ||
| >= 230 MPa @Thickness 1.60 - 30.0 mm | >= 33400 psi @Thickness 0.0630 - 1.18 in | ||
| 200 - 295 MPa @Thickness 40.0 - 80.0 mm | 29000 - 42800 psi @Thickness 1.57 - 3.15 in | H321 | |
| 215 - 305 MPa @Thickness 12.5 - 40.0 mm | 31200 - 44200 psi @Thickness 0.492 - 1.57 in | H321 | |
| 230 - 315 MPa @Thickness 4.00 - 12.5 mm | 33400 - 45700 psi @Thickness 0.157 - 0.492 in | H321 | |
| 250 - 315 MPa @Thickness 1.20 - 6.30 mm | 36300 - 45700 psi @Thickness 0.0472 - 0.248 in | H323 | |
| 285 - 350 MPa @Thickness 1.20 - 6.30 mm | 41300 - 50800 psi @Thickness 0.0472 - 0.248 in | H343 | |
| Elongation at Break | 6.0 - 8.0 % @Thickness 1.20 - 6.30 mm | 6.0 - 8.0 % @Thickness 0.0472 - 0.248 in | H323; In 50 mm |
| 6.0 - 8.0 % @Thickness 1.20 - 6.30 mm | 6.0 - 8.0 % @Thickness 0.0472 - 0.248 in | H343; In 50 mm | |
| >= 10 % @Thickness 1.60 - 30.0 mm | >= 10 % @Thickness 0.0630 - 1.18 in | In 50 mm | |
| >= 10 % @Thickness 1.60 - 30.0 mm | >= 10 % @Thickness 0.0630 - 1.18 in | In 5d | |
| >= 10 % @Thickness 30.0 - 40.0 mm | >= 10 % @Thickness 1.18 - 1.57 in | In 5d | |
| >= 10 % @Thickness 40.0 - 80.0 mm | >= 10 % @Thickness 1.57 - 3.15 in | In 5d | |
| >= 10 % @Thickness 80.0 - 110 mm | >= 10 % @Thickness 3.15 - 4.33 in | In 5d | |
| >= 10 % @Thickness 12.5 - 40.0 mm | >= 10 % @Thickness 0.492 - 1.57 in | H321; In 5d | |
| >= 10 % @Thickness 40.0 - 80.0 mm | >= 10 % @Thickness 1.57 - 3.15 in | H321; In 5d | |
| >= 12 % @Thickness 4.00 - 12.5 mm | >= 12 % @Thickness 0.157 - 0.492 in | H321; In 50 mm | |
| 16 % @Diameter 12.7 mm | 16 % @Diameter 0.500 in | AA; Typical | |
| Modulus of Elasticity | 71.0 GPa | 10300 ksi | AA; Typical; Average of tension and compression. Compression modulus is about 2% greater than tensile modulus. |
| Tensile Modulus | 70.3 GPa | 10200 ksi | |
| Compressive Modulus | 71.7 GPa | 10400 ksi | |
| Ultimate Bearing Strength | 634 MPa | 92000 psi | Edge distance/pin diameter = 2.0 |
| Bearing Yield Strength | 386 MPa | 56000 psi | Edge distance/pin diameter = 2.0 |
| Poissons Ratio | 0.33 | 0.33 | Estimated from trends in similar Al alloys. |
| Machinability | 30 % | 30 % | 0-100 Scale of Aluminum Alloys |
| Shear Modulus | 26.0 GPa | 3770 ksi | Estimated from similar Al alloys. |
| Shear Strength | 207 MPa | 30000 psi | AA; Typical |
Thermal Properties:
| Thermal Properties | Metric | English | Comments |
|---|---|---|---|
| CTE, linear | 22.1 µm/m-°C @Temperature -50.0 - 20.0 °C | 12.3 µin/in-°F @Temperature -58.0 - 68.0 °F | |
| 23.9 µm/m-°C @Temperature 20.0 - 100 °C | 13.3 µin/in-°F @Temperature 68.0 - 212 °F | AA; Typical; average over range | |
| 24.8 µm/m-°C @Temperature 20.0 - 200 °C | 13.8 µin/in-°F @Temperature 68.0 - 392 °F | ||
| 25.9 µm/m-°C @Temperature 20.0 - 300 °C | 14.4 µin/in-°F @Temperature 68.0 - 572 °F | ||
| Specific Heat Capacity | 0.900 J/g-°C | 0.215 BTU/lb-°F | |
| Thermal Conductivity | 116 W/m-K | 805 BTU-in/hr-ft²-°F | |
| Melting Point | 568.3 - 638 °C | 1055 - 1180 °F | AA; Typical range based on typical composition for wrought products >= 1/4 in. thickness |
| Solidus | 568.3 °C | 1055 °F | AA; Typical |
| Liquidus | 638 °C | 1180 °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