1100 Aluminum: Properties, Uses, and Why It’s a Popular Choice

Aluminum is one of the most widely used metals in the world thanks to its light weight, corrosion resistance, and versatility. Among the many alloys available, 1100 aluminum stands out as a trusted, cost-effective option that continues to play an essential role across industries.

If you’re looking for an alloy that combines formability, corrosion resistance, and affordability, 1100 aluminum is one worth knowing. In this article, we’ll explore what makes it unique, its chemical makeup, properties, and common applications — and why Metal Exchange is a trusted partner for sourcing it.

What is 1100 Aluminum?

1100 aluminum is part of the 1xxx series of alloys, which are known as commercially pure aluminum. With a minimum of 99% aluminum content, it is one of the purest forms of aluminum available in rolled product form.

Because it contains very little alloying elements (just small amounts of copper, silicon, iron, and others), 1100 aluminum offers excellent corrosion resistance and workability, though it is not as strong as alloys in the 3xxx or 5xxx series.

This makes 1100 a go-to material for non-structural applications where durability, ductility, and appearance are more important than high strength.

Chemical Composition of 1100 Aluminum

Here’s a simple breakdown of its typical composition:

Its simplicity is the source of its strengths: excellent resistance to atmospheric corrosion, easy fabrication, and suitability for decorative finishing.

Key Properties of 1100 Aluminum

• Corrosion Resistance – Performs exceptionally well in atmospheric conditions, making it ideal for roofing, siding, and chemical equipment.
• Formability – Can be easily cold-worked, rolled, stamped, or spun into complex shapes.
• Workability – Excellent for welding, brazing, and soldering.
• Appearance – Accepts anodizing and other finishes for decorative use.
• Strength – Among the softer alloys, but adequate for light-duty applications.

(See more about aluminum properties at the Aluminum Association.)

Common Applications of 1100 Aluminum

Because of its unique balance of formability and corrosion resistance, 1100 aluminum is used in a wide range of industries. Some examples include:

• Building & Construction – Roofing, siding, and interior decorative panels.
• Food & Beverage – Packaging, utensils, and processing equipment.
• HVAC & Heat Transfer – Fins for heat exchangers.
• Chemical Industry – Storage tanks and chemical equipment resistant to atmospheric corrosion.
• Decorative Uses – Anodized architectural panels, signage, and artwork.

Real-world example: foil stock made from 1100 aluminum is commonly used in the packaging industry due to its excellent resistance to moisture and light.

Advantages of Choosing 1100 Aluminum

• Cost-Effective – One of the most affordable aluminum alloys.
• Lightweight – A key reason it’s used in construction and packaging.
• Sustainable – Like all aluminum, it is 100% recyclable without losing quality.
• Ease of Use – Highly formable for both industrial and decorative designs.

1100 Aluminum vs. Other Alloys

While 1100 is excellent for corrosion resistance and formability, it’s important to know when to choose a different alloy:

• 3003 Aluminum – Slightly stronger due to manganese, often used for roofing and siding where higher strength is needed.
• 5052 Aluminum – Known for higher strength and marine corrosion resistance, making it ideal for shipbuilding and marine equipment.

(For a deeper dive, check out our article on 3003 Aluminum.)

Working with Metal Exchange

At Metal Exchange, we supply a full range of aluminum products — including coil, sheet, foil, billet, and wire rod. With a global supply chain, on-demand inventory, and logistics expertise, we make it easy to get the right alloy for your application.

Whether you’re looking for 1100 aluminum for packaging, or exploring higher-strength options like 3003 or 5052, our team is here to help you find the right fit, get in touch with Metal Exchange today.