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Aluminum 1100 Sheet Plate – Composition, Properties, and Uses

Aluminum 1100 Sheet Plate

Aluminum is one of the most versatile metals in the world, thanks to its unique properties, such as its lightweight, durability, and excellent thermal and electrical conductivity. Among the different types of aluminum alloys, one of the most popular is aluminum 1100. This type of aluminum alloy is widely used in various industries due to its impressive physical and mechanical properties and excellent corrosion resistance. This blog post will take a closer look at aluminum 1100 sheet plates, including their composition, physical and mechanical properties, uses, heat treatment, and corrosion resistance.


What is Aluminum 1100 Sheet Plate?

1100 Aluminum Sheet Plate is a commercially pure aluminum with excellent corrosion resistance, formability and weldability. It’s soft and non-heat treatable and can easily form into many shapes. It’s frequently used in aircraft components, utensils, decorative products and chemical equipment.

Aluminum 1100 Sheet Plate Composition

Al 1100 plate is an alloy made from 99.0% pure aluminum. It is one of the most common aluminum alloys known for its excellent ductility and formability. It also contains small amounts of iron, silicon, copper, and zinc, which improve its strength and hardness.

99.00% 0.95% 0.05 – 0.2% 0.05% 0.1%

Aluminum 1100 Sheet Plate Physical Properties

The Al 1100 sheet has a 2.71 g/cm³ density, making it one of the lightest aluminum alloys. It has a melting point of 660°C and a 222 W/(m. K) thermal conductivity, higher than most non-aluminum metals. It is also an excellent electrical conductor, with a 37.8 x 10^6 S/m conductivity.

Aluminum 1100 Sheet Plate Mechanical Properties

UNS A91100 sheet plate has impressive mechanical properties, making it suitable for a wide range of applications. It has a tensile strength of 95-135 MPa and a yield strength of 55-95 MPa. It also has a very low hardness of 23 HB and an elongation of 35-40%.

Temper Ultimate Tensile Strength Yield Strength %
1100-O 89 MPa / 13,000 psi 5,000 30
1100-H14 124 MPa / 18,000 psi 17,000 3
1100-H18 165 MPa / 24,000 psi 22,000 2

Aluminum 1100 Sheet Plate Uses

1100 Aluminum sheet plate is used in various industries due to its superior properties. It is commonly used in the construction and architecture industries, aluminum foil and packaging, signage, equipment and machinery, and transportation. Aluminum 1100 sheet plate is also popular in the food industry due to their non-toxic nature and excellent corrosion resistance.

Aluminum 1100 Sheet Plate Heat Treatment

Aluminum 1100 sheet plate is a non-heat-treatable alloy. This means that it cannot be hardened through heat treatment. However, it can be cold worked to improve its strength and hardness. It can also be annealed to increase its ductility.

Aluminum 1100 Sheet Plate Corrosion Resistance

Finally, aluminum 1100 sheet plate has excellent corrosion resistance, especially in environments with low acidity. It is resistant to acidic, alkaline, and neutral solutions, making it a popular choice in the construction and food industries.



Aluminum 1100 sheet plate is a versatile and popular aluminum alloy due to its excellent physical and mechanical properties, superior corrosion resistance, and non-toxic nature. It is commonly used in various industries, such as construction, architecture, transportation, and food packaging. While it is not heat-treatable, it can be cold worked and annealed to improve strength and ductility. Overall, this type of aluminum alloy is an excellent choice for various applications that require lightweight, durable, and corrosion-resistant materials.

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