Why Do Aluminum Sheets and Extrusions Have Different Mechanical Properties?

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In summary, aluminum sheets and extrusions are thin, flat pieces of aluminum that are commonly used in construction, transportation, and manufacturing industries for their lightweight, durable, and corrosion-resistant properties. They offer a high strength-to-weight ratio, good thermal and electrical conductivity, and are malleable for easy shaping. They are made through hot or cold rolling processes and are commonly used in a variety of industries such as construction, transportation, aerospace, and electrical. The selection of the right aluminum sheet or extrusion for a specific application depends on factors such as strength, corrosion resistance, and alloy type. Consulting with a specialist is recommended for the best selection.
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topito2
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I have noticed that the mechanical properties of aluminum vary depending on if it is provided as sheets or extrusion. Do you know why?
 
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The material properties are dependent not only on alloy and temper, but also on fabrication method (cold rolled?). In any spec that calls out the sheet, plate, strip or other form of the test specimen, they also call out the AMS spec number that outlines the way that piece was fabricated.
 
  • #3
Fabrication method = thermomechanical processing, as in hot-rolled vs cold-rolled, repeated cycles of cold-work/anneal, etc.

Rolling produces a different metallurgical state than extrusion.
 

FAQ: Why Do Aluminum Sheets and Extrusions Have Different Mechanical Properties?

What are aluminum sheets and extrusions?

Aluminum sheets and extrusions are flat, thin pieces of aluminum that have been processed through a rolling mill to achieve a desired thickness. They are commonly used in construction, transportation, and manufacturing industries for their lightweight, durable, and corrosion-resistant properties.

What are the benefits of using aluminum sheets and extrusions?

Aluminum sheets and extrusions offer several benefits, including their high strength-to-weight ratio, excellent thermal and electrical conductivity, and resistance to rust and corrosion. They are also highly malleable, making them easy to shape and form into various products.

How are aluminum sheets and extrusions made?

Aluminum sheets and extrusions are made through a process called hot or cold rolling. In hot rolling, the aluminum is heated to a high temperature and then passed through a series of rollers to achieve the desired thickness. In cold rolling, the aluminum is passed through rollers at room temperature, resulting in a thinner and harder product.

What industries commonly use aluminum sheets and extrusions?

Aluminum sheets and extrusions are used in a wide range of industries, including construction, transportation, aerospace, electrical, and packaging. They are often used for structural components, such as beams and frames, as well as for decorative and functional purposes, such as doors, windows, and automotive parts.

How do you choose the right aluminum sheet or extrusion for a specific application?

The selection of aluminum sheets and extrusions depends on several factors, including the desired strength, corrosion resistance, and thermal and electrical conductivity. Other factors to consider include the alloy type, surface finish, and tolerances. It is important to consult with a specialist to determine the best option for your specific application.

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