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Calculate the weight and cost of aluminum for various shapes and alloys. Supports plates, bars, tubes, angles, and sheets with different aluminum grades.
The aluminum weight calculator helps you determine the weight and cost of aluminum materials based on their shape, dimensions, and alloy type. Aluminum is one of the most versatile metals used in construction, manufacturing, and aerospace applications due to its excellent strength-to-weight ratio, corrosion resistance, and workability.
This calculator supports various aluminum shapes including plates, bars, tubes, angles, and sheets. Each aluminum alloy has different densities and properties, which affect the final weight and suitability for specific applications.
Understanding aluminum weight is crucial for structural engineering, cost estimation, shipping calculations, and load-bearing capacity assessments. Different alloys offer varying combinations of strength, corrosion resistance, weldability, and formability.
| Shape | Volume Formula |
|---|---|
| Plate/Sheet | Volume = Length × Width × Thickness |
| Round Bar | Volume = π × (Diameter/2)² × Length |
| Square Bar | Volume = Width² × Length |
| Rectangular Bar | Volume = Width × Height × Length |
| Round Tube | Volume = π × [(OD/2)² - (ID/2)²] × Length |
| Square Tube | Volume = (Outer² - Inner²) × Length |
| Angle | Volume = (W×T + H×T - T²) × Length |
Weight = Volume × Density × Quantity
Where density varies by alloy type (typically 0.097-0.101 lb/in³ for common aluminum alloys).
| Alloy | Density (lb/in³) | Characteristics |
|---|---|---|
| 1100 | 0.098 | 99% pure aluminum, excellent corrosion resistance, high thermal/electrical conductivity |
| 2024 | 0.101 | High strength aerospace grade, good fatigue resistance, requires coating for corrosion |
| 3003 | 0.099 | General purpose, excellent formability, good corrosion resistance, widely used |
| 5052 | 0.097 | Marine grade, excellent saltwater corrosion resistance, good weldability |
| 6061 | 0.098 | Most versatile, good strength, excellent corrosion resistance, easily machined/welded |
| 6063 | 0.097 | Extrusion grade, excellent surface finish, architectural applications |
| 7075 | 0.101 | Highest strength aluminum alloy, used in aircraft structures, lower corrosion resistance |
Pure aluminum has a density of approximately 0.098 lb/in³ (2.70 g/cm³). Different aluminum alloys have slightly varying densities ranging from 0.097 to 0.101 lb/in³ depending on the alloying elements used.
7075 aluminum is the strongest aluminum alloy, with a tensile strength comparable to many steels. It's commonly used in aerospace applications where high strength is critical. However, it has lower corrosion resistance than other alloys like 6061.
6061 has higher strength and is better for structural applications, while 6063 is more suitable for extrusions and has better surface finish. 6063 is commonly used for architectural applications like window frames, while 6061 is used for structural components.
Aluminum is approximately one-third the weight of steel. This means aluminum weighs about 0.098 lb/in³ while steel weighs about 0.283 lb/in³. This significant weight difference makes aluminum ideal for applications where weight reduction is important.
Most aluminum alloys can be welded, but some are easier than others. The 6000 series (6061, 6063) are generally very weldable, while 2000 series (2024) and 7000 series (7075) are more difficult to weld and may require special procedures or heat treatment after welding.
Marine-grade aluminum typically refers to 5052 or 5086 alloys, which have excellent corrosion resistance in saltwater environments. These alloys contain magnesium which provides both strength and superior resistance to saltwater corrosion, making them ideal for boat hulls and marine structures.
To calculate aluminum sheet weight: multiply length × width × thickness to get volume in cubic inches, then multiply by the density (typically 0.098 lb/in³ for common alloys). For example, a 48" × 96" × 0.125" sheet of 6061 weighs approximately 56 pounds.
Aluminum offers several advantages: lighter weight (1/3 of steel), excellent corrosion resistance without coating, good thermal and electrical conductivity, easier to machine and form, and it doesn't rust. However, steel generally has higher strength and is less expensive per pound.
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