Aluminum Alloy Density Chart

Aluminum alloy density chart

Density changes in aluminum alloys of different alloy series

Although the density of pure aluminum is usually considered to be around 2.7 g/cm3, the application of alloys may result in slightly different numbers. Heavier alloying elements will increase the weight of the product. For example:

The density of the 1000 series alloy is closer to that of pure aluminum; In fact, the alloys in this series are considered to be 99% pure commercial aluminum.

The 4000 series alloy (whose main alloying component is silicon) can produce a density lower than that of pure aluminum with a specific gravity of 2.7 g/cm3. Under a certain amount, silicon can lead to a decrease in the specific gravity of aluminum.

The 7000 series and 8000 series alloys can produce densities of up to approximately 2.9 kg/m3. Especially 7075 aluminum, with a density of 2.81 g/cm3, has a higher density than other alloys. Therefore, 7075 aluminum is one of the strongest materials among existing aluminum materials (its ultimate tensile strength is almost twice that of the popular 6061 aluminum).

The relationship between weight calculation and density of aluminum alloys

The weight of aluminum per cubic inch is 0.0975 pounds, or 2.7 grams per cubic centimeter. To calculate the weight of aluminum per square foot, you must measure the thickness of the aluminum sheet or plate. The formula is:

Weight = L (Length) x W (Width) x T (Thickness) x ρ (Density), or

Weight = Length x Width x Weight/m² (or in², ft²).

For example, to calculate the weight of aluminum block:

Determine the weight of the 3003 aluminum plate measuring 1.2m x 2.4m x 0.0025m (thickness: 25mm). Take the density of aluminum from the table as 2.71g/m³ (2730 kg/m³):

The total volume of the block is 1.2 x 2.4 x 0.0025 = 0.0072 m³.

Total weight = Density × Volume

Total weight = 2730 x 0.0072 = 19.656 kg.

The advantages of aluminum density in different application fields

The low density of aluminum means it is lightweight and easy to move. For products where lightweight is considered a very important characteristic, the density of aluminum is a significant advantage. And despite being lightweight (marked by a high strength to weight ratio), this material is very sturdy and easy to shape and squeeze, making it an excellent choice for materials that are crucial for lightweight and toughness.

Benefiting from low-density applications of aluminum include transportation components (especially aerospace and automotive), machinery and appliances, building materials, packaging, electrical components, household items, kitchen utensils, and food/chemical packaging.

• Aluminum alloys are widely used in the aerospace field, and lightweight design is crucial for aircraft and spacecraft. Low density makes the aircraft structure lighter, improving fuel efficiency and flight performance.
• In automobile manufacturing, aluminum alloy is used for body, engine components, and suspension systems to reduce vehicle weight, improve fuel efficiency, and handling performance.
• In the packaging field, aluminum containers such as cans and cans are lightweight, easy to carry, and convenient for transportation.
• In architecture, aluminum alloy is used for windows, door frames, curtain walls, etc., providing strength and corrosion resistance, reducing structural burden.
• In electronic products, aluminum alloy shells are used to manufacture lightweight devices such as laptops and mobile phones, enhancing portability.

Overall, the low density and lightweight properties of aluminum alloys make them an ideal choice for many industrial and consumer applications, helping to achieve lightweight product design, energy efficiency improvement, and resource conservation.