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What are the Characteristics of Aluminum Coil?

Views: 234     Author: Julong     Publish Time: 2023-09-19      Origin: aluminum panel systems manufacturer


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What are the Characteristics of Aluminum Coil?

1. Aluminum Coil

The term "aluminum coil" refers to aluminum that has been flattened into sheets with a width that is significantly greater than its thickness and "coiled" into a roll. Because of the possibility of inconsistent sizes, stacks of individual aluminum sheets are difficult to store, and individual sheets are difficult to retrieve and carry. Aluminum sheet coils, on the other hand, are simple to store and transport.

When an aluminum coil arrives at a metalworking facility, it may go through several processing steps. Aluminum coils, for example, can be cut, welded, bent, stamped, engraved, and attached to other metal items. Aluminum suppliers provide aluminum coils to manufacturing facilities, metal fabricators, and other metalworking operations that require this metal to produce so many of the objects our world has come to rely on, including auto parts, cans used to protect and store food, and countless other items. Click here for Color Coated Aluminum Coil.

2. Aluminum Coil Characteristics


Aluminum is extremely resistant to weathering and corrosion, even in industrial environments where other metals are frequently corroded. Several acids will not corrode it. Aluminum naturally produces a thin but effective oxide layer that prevents further oxidation, providing it with exceptional corrosion resistance. As a result, aluminum oxide objects are nearly impermeable to many corrosive substances.

Easily machined and cast:

Aluminum coil is more pliable and easier to pour into molds because it melts faster than steel. Aluminum castings are also less stiff than steel castings, making them easier to work with, whereas steel castings require significantly more effort. It is one of the most machinable metals available, which reduces processing time.

Lightweight and long-lasting:

Because of its low density, aluminum coil is lightweight and portable. As a result, it is the metal of choice for aircraft construction. It may be considered even more durable because it can be recycled.

Nonmagnetic and spark-free:

Because of its crystalline structure, aluminum is nonmagnetic. After any scratch, an oxide layer forms quickly, making it non-sparking. Aluminum coils are a good thermal and electrical conductor due to the presence of free electrons in their structure. Because these electrons are constantly flowing, the aluminum coil is a good heat conductor.


Because of the available free electrons for bonding, aluminum coils are soft.


Aluminum exposure is not harmful to the body.


Because aluminum is more malleable than most other metals, shaping the coils is easier. Engineers can bend coils into effective designs because of the increased flexibility. Microchannel coils, for example, improve heat transfer, reduce leaks, and are more corrosion-resistant.


Aluminum has a low density, is non-toxic, has a high thermal conductivity, is corrosion resistant, and can be cast, machined, and formed easily. It is also non-magnetic and does not spark. It is the second most malleable metal and is extremely ductile, making it ideal for converting this material into wire.

Aluminum coils are commonly available in internal diameters of 508 mm, 406 mm, and 610 mm. The diameter created by the coil's outer, circular contour is defined as its outer diameter. The dimension of an aluminum coil is typically determined by the capacity and geometrical features of the recoiler machine used to process it. The space between the two adjacent surfaces of an aluminum coil measured perpendicularly indicates the coil's thickness. Engineers must consider the dimensions of the coating material for the aluminum coil because a difference of just 0.06 mm can have a significant impact on the precision of design calculations. The coil width is the transverse dimension of an aluminum coil.

The weight of an aluminum coil is calculated as (Coil Diameter*1/2*3.142 - Inner Diameter*1/2*3.142)*Coil Width*2.7(Aluminum Density)Because different alloys have different densities and measurement errors for diameters always exist, this formula only provides a rough estimate of the weight of an aluminum coil roll. Furthermore, the weight of the aluminum coil is affected by the manufacturer's feeding frame capacity.

An aluminum coil's thickness can range from 0.2 to 8mm. However, most aluminum rolls are between 0.2mm and 2mm thick. The specific use of an aluminum coil is determined by its thickness. Consider an insulation aluminum coil with a thickness of 0.75mm, which is the most common. Coated aluminum roof coil, another popular option, is only 0.6 to 1.0mm thick. Only the thicker special-purpose aluminum rolls are available. Customers may, of course, request any thickness less than 8mm from the provider based on their specific needs.

3. Factors to Consider When Purchasing an Aluminum Coil

Aluminum is one of the best and most widely used metals today. This is evidenced by the wide range of industries in which it is used. Before purchasing aluminum from an aluminum coil supplier, the following factors should be considered.

Supplier History

There are numerous options for aluminum coil suppliers—deciding which to choose and why is difficult. The supplier's experience should be the primary point of reference. It is preferable to work with a supplier who has a track record of providing these aluminum coils. A seller who has yet to generate significant revenue can only provide limited information about the quality and types of materials they are selling. A credible supplier should also have a long history and an online presence because no business exists in isolation. Before entering into any agreement, it is preferable to learn how long the company has been in business and how previous customers rated their interactions with it.


When selecting an aluminum coil to be integrated with other metals, ease of machining should be taken into account. The machining process should take into account whether it is compatible with the aluminum coils that will be used. Weldability should also be taken into account during the machining process. Some aluminum grades are easily welded, while others are not. Customers should be given this information by the supplier. Some aluminum alloys cannot be properly welded to other metals.

Aluminum Grades' Prices vs. Their Value

Aluminum comes in a variety of grades. If you only have a basic understanding of this, it is best to work with an aluminum coil supplier who is knowledgeable about it and can help you clarify things. Coils are classified into several types based on their intended use and heat capacity. Even though lower-grade coils are less expensive, higher grades must be considered based on the material's intended use. Use only an aluminum coil supplier who understands these different grades, what applications are appropriate for each grade, and strives to find the appropriate grade based on your intended use.


Formability is the degree of deformation achieved during a metal-forming process without causing an undesirable state, such as cracking, necking, buckling, or the development of folds and defects. The formability of different aluminum coils varies. This must be considered when choosing an aluminum coil.

Supplier Reliability

Customers should choose a provider who has a large stock of the material they want unless it is a one-time purchase. If they changed suppliers, they would have to restart the vetting process. Whenever possible, most suppliers are prepared to produce and supply the required quantity and will have a large warehouse stocked with the aluminum coils you require.

Common End-Use Applications

There are various coil grades, and while some may be more readily available and less expensive, they may only be suitable for certain end-use applications. This is an important factor to consider when selecting the best aluminum coil.


Customers must understand that a competitive, "fair" price should be regarded as a guarantee of the material's quality. Various aluminum coil manufacturers offer price ranges based on the grade of the material and other questionable factors. For example, some aluminum coil manufacturers reduce production costs by thinning the coating. It is up to each individual to find and choose the supplier that provides the best value without sacrificing quality.