Is aluminum conductive, Does aluminum conduct electricity?

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Is aluminum conductive, Does aluminum conduct electricity?

Aluminum conductivity is an important factor to consider when developing electronics devices. It can have a significant impact on the performance and efficiency of electronic devices. Therefore, it is essential to understand how aluminum works in order to make the most out of your electronic components. In this article, we will discuss the basics of aluminum conductivity, its impact on electronics, and why it is important for engineers and manufacturers. We will also explore some use cases of aluminum in electronics and discuss its advantages over other materials. With this knowledge, you will be able to make informed decisions about how to use aluminum material for your projects.

What is Aluminum Conductivity and How Does it Affect Electronics?

Aluminum is a popular material used in the production of electronics due to its electrical conductivity. It has a wide range of applications, from power cables to circuit boards and more. But what is aluminum conductivity? What are its electrical properties and how does it affect electronics?

Aluminum is a silvery white light metal. malleable. Commodities are often made into columns, rods, flakes, foils, powders, ribbons and filaments. The melting point is 660°C. The boiling point is 2327°C. The relative density is 2.70, and the density of aluminum liquid is 2.303 g/cm³. Elastic modulus 70Gpa, Poisson’s ratio 0.33. The electrical conductivity of aluminum is about 60% of that of copper. If calculated by unit mass, the electrical conductivity of aluminum exceeds that of copper, and it often replaces copper in long-distance transmission. It is widely used for its light weight, good electrical and thermal conductivity, high reflectivity and oxidation resistance.

What is Aluminum Conductivity and How Does it Affect Electronics?

What aluminum is no conductivity?

Aluminum oxide is non-conductive, so if you see non-conductive aluminum, it is because the aluminum has been anodized to form an oxide film on the surface of the aluminum. In addition to being non-conductive, this oxide film improves the corrosion resistance of aluminum, and the surface hardness is also greatly improved, which can resist general friction and is not easy to be stained. The aluminum pots and aluminum kettles used in daily life are all treated in this way

The features of aluminum material

The use of a substance largely depends on the properties of the substance. Because aluminum has many excellent properties, aluminum has a very wide range of uses.
Aluminum and aluminum alloys are currently one of the most economically applicable materials that are widely used. Since 1956, the world’s aluminum output has surpassed that of copper, and it has always ranked first in non-ferrous metals. The current output and consumption of aluminum (calculated by ton) is second only to steel, and has become the second largest metal used by human beings; moreover, aluminum resources are very abundant. According to preliminary calculations, the mineral reserves of aluminum account for more than 8% of the earth’s crust. 

Aluminum’s light weight and corrosion resistance are two outstanding features of its performance.

1. The density of aluminum is very small, only 2.7g/cm³. Although it is relatively soft, it can be made into various aluminum alloys, such as hard aluminum, super hard aluminum, anti-rust aluminum, cast aluminum, etc. These aluminum alloys are widely used in manufacturing industries such as aircraft, automobiles, trains, and ships. In addition, space rockets, space shuttles, and artificial satellites also use a large amount of aluminum and its aluminum alloys. For example, a supersonic aircraft is approximately 70% aluminum and its alloys. Aluminum is also used in large quantities in shipbuilding, and a large passenger ship often uses thousands of tons of aluminum.

2. The conductivity of aluminum is second only to silver, copper and gold. Although its conductivity is only 2/3 of that of copper, its density is only 1/3 of that of copper. Therefore, the quality of aluminum wire is only copper wire when transporting the same amount of electricity. half of. The oxide film on the surface of aluminum not only has the ability of corrosion resistance, but also has a certain degree of insulation, so aluminum is widely used in the electrical manufacturing industry, wire and cable industry and radio industry.

3. Aluminum is a good conductor of heat, and its thermal conductivity is three times greater than that of iron. In industry, aluminum can be used to manufacture various heat exchangers, heat dissipation materials and cooking utensils.

4. Aluminum has good ductility (its ductility is second only to gold and silver), and it can be made into aluminum foil thinner than 0.01mm at 100°C to 150°C. These aluminum foils are widely used for packaging cigarettes, candies, etc., and can also be made into aluminum wires and bars, and can be rolled into various aluminum products.

5. The surface of aluminum is not easy to be corroded due to the dense oxide protective film, and is often used to manufacture chemical reactors, medical equipment, refrigeration equipment, petroleum refining equipment, oil and gas pipelines, etc.

6. Aluminum powder has a silver-white luster (generally, the color of metal in powder form is mostly black), and is often used as a coating, commonly known as silver powder and silver paint, to protect iron products from corrosion and to look beautiful.

7. Aluminum can emit a lot of heat and dazzling light when it burns in oxygen. It is often used to make explosive mixtures, such as ammonium aluminum explosives (mixed with ammonium nitrate, charcoal powder, aluminum powder, soot and other combustible organic substances), Combustion mixtures (such as bombs and shells made of thermite can be used to attack targets that are difficult to catch fire or tanks, cannons, etc.) and lighting mixtures (such as 68% barium nitrate, 28% aluminum powder, and 4% shellac).

8. Thermite is commonly used to smelt refractory metals and weld rails. Aluminum is also used as a deoxidizer in the steelmaking process. Aluminum powder, graphite, titanium dioxide (or oxides of other high-melting point metals) are uniformly mixed in a certain ratio, coated on the metal, and calcined at high temperature to make a high-temperature resistant cermet, which is used in rocket and missile technology. Important application .

7. The reflective performance of aluminum plate to light is also very good, and the reflection of ultraviolet rays is stronger than that of silver. The purer the aluminum, the better its reflective ability, so it is often used to manufacture high-quality reflectors, such as solar cooker reflectors.

8. Aluminum has sound-absorbing properties and good sound effects, so aluminum is also used in broadcasting rooms and ceilings in modern large-scale buildings. Low temperature resistance, when the temperature of aluminum is low, its strength increases instead of brittleness, so it is ideal for low temperature device materials, such as refrigerators, freezers, and production devices for Antarctic snow vehicles.

Author: Mose Li

Author: Mose Li

Director of Project Engineering at 3Q Machining

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