5454 aluminum alloy is renowned for its moderate strength and excellent corrosion resistance. Due to these unique properties, 5454 aluminum finds application in fuel tanks, pressure vessels, and exhaust systems.
In this guide, you learn about 5454, its mechanical properties, and machining best practices.
Chemical Composition of 5454 Aluminum
5454 belongs to the 5xxx family of aluminum alloys, which exhibit impressive mechanical strength and corrosion resistance properties. Here, we discuss 5454’s chemical composition.
Major Alloying Elements
Pure 5454 is produced by alloying Aluminum with Magnesium. But Manganese, Titanium, Chromium, and several other trace elements are added during processing.
5454, like most alloys of Aluminum, is characterized by an excellent strength-to-weight ratio. 5454 also offers exceptional fatigue strength, making it a superior choice for high-pressure environments.
Role of Magnesium and Manganese in Corrosion Resistance
When aluminum is exposed to air or pollutants for a prolonged time, it forms an oxide layer. So during manufacturing, Magnesium and Manganese are added to the 5454 alloy to enhance its corrosion strength.
Composition Table (Element % and Notes)
Here is a tabular representation of the 5454 aluminum alloy properties:
| Element | Approximation (%) | Note |
| Aluminum (Al) | 95 | Base metal, lightweight, corrosion-resistant, soft, flexible, good conductor of heat and electricity. Forms a protective aluminum oxide layer. |
| Magnesium (Mg) | 3 | Major alloying element; improves strength and corrosion resistance, especially in seawater. Helps form a tougher oxide layer. |
| Manganese (Mn) | 0.6 | Strengthens the alloy internally; prevents cracking and improves corrosion resistance. |
| Chromium (Cr) | 0.2 | Provides stability and enhances weldability. |
| Copper (Cu) | 0.1 | Improves strength in small amounts; too much reduces corrosion resistance. |
| Zinc (Zn) | 0.25 | Minor strengthening effect; excessive amounts reduce corrosion resistance. |
| Silicon (Si) | 0.25 | An impurity from smelting, in small amounts, can strengthen but too much weakens the alloy. |
| Iron (Fe) | 0.4 | An impurity (often from manufacturing); small amounts are tolerated, but excessive amounts weaken the alloy. |
Key Properties of 5454 Aluminum
5454 alloy is characterized by these physical properties.
Physical Properties
All aluminum grades have a density of 2.7g/cm3, making them three times lighter than other metals like copper, which is about 9g/cm3. Aluminum’s lightweight nature makes it the best choice for demanding applications since it’s durable and strong.
The melting point of aluminum is about 650 degrees Celsius, and varies based on the alloying elements. The hotter the aluminum, the bigger the expansion. The thermal expansion rate of the aluminum alloy is about 23 micrometers per meter per degree Celsius. For every 1-meter bar, a 1°C rise causes it to expand by about 23 micrometers.
Mechanical Properties
Tensile strength describes how much force your material can withstand before it breaks. The average tensile strength of Aluminum is 90MPa, but 5454 alloys range from about 240 to 300 MPa. For more details, check the guide on tensile strength. Elongation has to do with how far you can pull the alloy after heating, and when shaping, before it breaks. 5454 has an elongation of about 10 to 15% of its original size.
The 5454 aluminum yield strength depends a lot on the manufacturing process it goes through. In its softest form, called the O temper, it bends easily and has a yield strength of 90MPa. In its middle form, called the H34 form, it has a yield strength of 170 MPa. Then, in its hardest form, called H34, it could take about 220MPa before it bends.
Corrosion Resistance
Corrosion strength is one of the most important 5454 aluminum properties. Since Magnesium and Manganese are added during manufacturing, 5454 alloy is less susceptible to chloride or salt pitting.
Tempers and Forms of 5454 Aluminum
Examples of 5454 Aluminum temper include
Annealed Temper – 5454-O Aluminum
O temper 5454 is the softest form of the alloy. In this temper, the metal bends very easily and has a yield strength of about 90 MPa. Because 5454 O aluminum is soft and flexible, it is the best choice when you need to perform high-speed CNC machining.
Medium-Hard Temper – 5454-H32 Aluminum
H32 is the middle form of O and H34 aluminum. So, it gives you a balance between strength and corrosion resistance. 5454 h32 aluminum is stronger than the O temper but not as hard as the H34 temper.
This makes it a good option when you want aluminum that can last long in harsh environments. Also, the 5454 h32 aluminum sheet can still be shaped with moderate effort.
Hard Temper – 5454-H34 Aluminum
5454 h34 aluminum is the hardest form of this alloy. Its yield strength can reach between 170 and 220 MPa. It can handle a lot more force compared to the O and H32 tempers.
The downside is that it becomes less bendy. So, you cannot shape it as easily as the softer forms. This temper is chosen for heavy-duty uses where durability is more important than flexibility.
Applications of 5454 Aluminum
In this section, you learn about the wide uses of 5454 in the real world.
Marine Industry
5454 aluminum is perfect for the marine industry because it provides resistance to seawater corrosion. It is widely used in ship parts, storage tanks, and structures that exist offshore.
Automotive Industry
5454’s high strength-to-weight ratio is an advantage in automobile components. The heavier a vehicle is, the more fuel it consumes. Therefore, 5454 is a great choice for making durable and lightweight fuel tanks that minimize fuel consumption.
Architectural Applications
5454 aluminum is extremely strong and corrosion-resistant, making it a top choice in panels, facades, and sheets used in architectural projects. 545 doesn’t rust quickly, even when exposed to sunlight, wind, and rain.
This is why many 5454 aluminum plate suppliers also serve construction companies that want reliable materials that last.
Pressure Vessels & Storage Tanks
A 5454 aluminum plate is also used to make pressure vessels and storage tanks. These are containers that hold chemicals, oils, gases, or liquids that could damage weaker metals. The composition of metals inside 5454 aluminum makes it resistant to chemical attack. As a result, acids and other strong liquids do not eat through the tank walls.
Welding and Fabrication Behavior
In this section, we explore the workability of 5454 Aluminum.
Weldability of 5454 Aluminum
5454 aluminum is suitable for many commercial welding methods, such as Metal Inert Gas (MIG) and Tungsten Inert Gas (TIG) methods. For more details, you can check the guide to welding aluminum alloy.
It’s easier to work with a 5454 welding plate when it’s in an O temper form since the metal bends easily and doesn’t break. Since the metal is flexible, you can easily shape it into different designs and parts.
In its H32 and H34 temper, the metal isn’t flexible anymore. You can still shape it, but it would take more effort. You’ll need CNC milling machines for cutting and even industrial rolling machines for forming desired parts.
Surface Finishing Options
For 5454 surface finishes, you can apply an anodized coating. Anodizing gives the alloy a protective layer, enhancing its corrosion resistance while improving its visual appeal. You can also coat your aluminum plates to prevent harsh chemicals and seawater from making direct contact with the metal.
Comparison with Other Alloys
If you are just getting your feet wet in metal science, it is easy to confuse 5454 with 5052, 6061, or 5754 grades of aluminum. After all, these alloys are identical in appearance.
However, all aluminum alloys exhibit varying levels of durability and corrosion strength, leaving no room for error in alloy selection. Let’s use this section to see how 5454 shapes up against these common alternatives.
5454 Aluminum vs 5052 Aluminum
5454 and 5052 aluminum are both characterized by exceptional corrosion strength. In the tempered forms, you can shape and weld them into highly detailed machined parts.
The major difference, though, lies in their level of durability. While 5052 is ideal for kitchen equipment and road signs, 5454 is designed to withstand harsher conditions, such as chemical tanks and marine environments.
5454 Aluminum vs 6061 Aluminum
6061 aluminum offers greater strength than 5454. This is because 6061 contains a higher amount of silicon and magnesium. 6061 alloy finds extensive application in high-temperature fuselages, aircraft wings, and even towers. Use the paper on 6061 aluminum for further details.
5454 Aluminum vs 5754
5454 has more magnesium and manganese, making it tougher than 5754 alloy. So, it’s used for making industrial silos, ship parts exposed to seawater, etc. 5754 has lesser magnesium composites and is easier to bend and form when tempered. It is used in making ship decks, beverage cans, etc.
Another difference is in the regional differences in the use of these aluminum alloys. The EU countries like Germany tilt more towards 5754 because they are used in making car body panels. North American countries like the USA use 5454 to make truck bodies since that’s a huge industry in their region.
Availability and Sourcing
Common Product Forms
5454 alloy is typically sold in plates, coils, and extrusions.
Global and Regional Suppliers
5454 Aluminum plate is available under the following specifications
- EN AW 5454
- ASTM B209
- UNS A95454
- ISO Al-Mg3Mn
- QQ A-200/6
- QQ A250/10
- SAE J454
Buying Considerations
Before buying aluminum alloy, carefully go over all relevant ASTM/EN standards, mill certificates, and quality checks. The certificates show the chemical composition and properties of the contents in the aluminum alloy. Finally, a quality check will help you know the temper and type of aluminum alloy you are purchasing.
Conclusion
In summary, 5454 is one of the strongest aluminum grades in the market, as it can withstand harsh weather environments and is suitable for storing chemicals.
If you are evaluating 5454 alloy for your next project, consult JieJiaCNC to ensure the correct settings for our job.
FAQs
What are the main properties of 5454 aluminum?
5454 aluminum properties include being lightweight, corrosion-resistant, durable, weldable, and strong, with a tensile strength of 240–300 MPa.
Is 5454 aluminum stronger than 5052?
In the 5454 aluminum vs 5052 comparison, both are light and corrosion-resistant. But 5454 aluminum is built to withstand harsher conditions like salty seas and acid, making it stronger.
Can 5454 aluminum be welded?
Yes, welding 5454 aluminum is easy using MIG and TIG methods. It doesn’t crack when welding because of its magnesium and manganese content.
What is the yield strength of 5454 aluminum?
The 5454 aluminum yield strength varies. At O temper, it is about 90 MPa. While at H32 and H34, it is 170 and 220 MPa, respectively.
What are the available temper of 5454 aluminum?
5454 aluminum comes in three tempers: O, H32, and H34. 5454 O aluminum is the softest, bends easily. 5454 h32 aluminum has medium strength and is still shapeable. 5454 h34 aluminum is the hardest and least bendy.
Where can I buy a 5454 aluminum plate?
You can purchase 5454 aluminum plate from licensed metal suppliers such as JieJia CNC.
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