The difference between aluminum wire and copper wire, whether there is a difference in current is th

Copper and aluminum wires have different cut-off currents.

Aluminum wire is relatively inexpensive.

Aluminum wire is lighter in weight.

Aluminum wire has poor mechanical strength.

Aluminum wire is very easy to oxidize at the end of the connection line, and the temperature will rise and the contact will be poor after the end of the connection line is oxidized, which is a frequent point of failure (power failure or disconnection).

The internal resistance of the copper wire is small. Aluminum wire has greater internal resistance than copper wire, but it dissipates heat faster than copper wire.

Due to the density and weight, the general aluminum cable is used as a multi-point for the outer line. The highest point of the copper core cable. But malleability and other advantages. The copper core cable is mainly the connection within the user transformer.

Yes, the most obvious difference is that the resistance is different, and the resistance affects the current.

The resistivity of copper wire is times that of aluminum wire, that is to say, when the current carrying capacity is constant, the cross-sectional area of copper wire is on the line of the cross-sectional area of aluminum wire

The two materials are different, and there are too many factors to consider for accurate conversion. In general, the ratio of the current-carrying capacity of copper wire to aluminum wire is calculated as 1:or. The differences between the two are as follows:

1. Different resistivity: the resistivity of aluminum wire cable is about two times higher than that of copper wire cable.

2. The ductility is different: the ductility of copper alloy is 20 40%, and that of aluminum alloy is only 18%.

3. Different strength: copper is 7 28% higher than aluminum at room temperature. At high temperatures, the difference between the two is even greater.

4. Different fatigue resistance: aluminum is easy to break after repeated bending, while copper is not easy. In terms of elasticity, copper is also about twice as high as aluminum.

5. Different voltage loss rates: under the allowable voltage drop conditions, copper wire and cable transmission can reach a long distance, that is, the power supply coverage area is large, which is conducive to network planning and reduces the number of power supply points.

Difference Between Copper Wire and Aluminum Wire:

1. **Different, aluminum wire** is much lower than copper wire, normal copper wire ** is twice that of aluminum wire, and copper wire is heavier than aluminum wire.

2. The flexibility is different, the flexibility of copper wire is more excellent, the deformation is simple, and the fatigue resistance is strong, and the aluminum wire is very easy to break when bending.

3. The resistivity is different, the resistivity of copper wire is small, generally smaller than that of aluminum wire, so the power consumption of aluminum wire is relatively large, and the heating situation is serious, which can easily affect the efficiency of electricity consumption.

4. The stability is different, and the aluminum wire is easy to oxidize when it is used, which leads to an increase in resistance, reduces the load capacity of the wire, and leads to the occurrence of safety accidents.

5. The load power is different, the same cross-sectional area of copper wire and aluminum wire, the load power of the general copper wire is larger than that of the aluminum wire, if both are squared, if the aluminum wire can bear 2500 watts, then the copper wire is 3000 watts.

The resistance of copper wire with the same cross-sectional area and length is smaller than that of aluminum wire, because the conductivity of copper wire is lower, so the conductivity of copper wire is better than that of aluminum wire, and the thermal conductivity is also good, and the maximum safe energizing current is also higher than that of aluminum core wire, and the service life is long.

A new conductor material is formed by coating a thin copper layer on the aluminum core and metallurgically combining the atomic bonds at the interface between copper and aluminum.

It not only gives full play to the excellent conductivity of copper and the light weight of aluminum, but also overcomes the disadvantages of easy oxidation of aluminum, large contact resistance and difficult welding of joints, and greatly saves China's scarce copper resources and reduces the cost of conductors.

Copper and aluminum wires have different cut-off currents.

Aluminum wire is relatively inexpensive.

The quality of aluminum wire is lighter and more fierce. Imitation front masking.

Aluminum wire has poor mechanical strength.

Aluminum wire is very easy to oxidize at the end of the connecting line, and the temperature will rise and the contact will be poor after the connection end is oxidized, which is a frequent point of failure (power failure or disconnection of the state).

The internal resistance of the copper wire is small. Aluminum wire has greater internal resistance than copper wire, but it dissipates heat faster than copper wire.

Due to the density and weight, the general aluminum cable is used as a multi-point for the outer line. The highest point of the copper core cable. But malleability and other advantages. The copper core cable is mainly the connection within the user transformer.

Aluminum wire aluminum wire is a linear material made of aluminum, it is a solid pressure machined product with a uniform cross-section along its longitudinal length and is delivered in rolls. The cross-sections are circular, elliptical, square, rectangular, equilateral triangle, and regular polygon. Characteristics and applicationsDue to the high strength and good fatigue strength of aluminum alloy, it is widely used in aircraft structures (skin, skeleton, ribs, frames, etc.).

Rivets, missile structures, propeller assemblies and other structures. 2024 aluminum alloy with a density of grams and centimeters (pounds and inches). Tensile Strength B(MPa) 425 Conditional Yield Strength Sample Size:

All wall thicknesses are annealed and newly quenched in good formability, and the heat treatment strengthening effect is remarkable, but the heat treatment process is strict. Poor corrosion resistance, but pure aluminum coating can be effectively protected; It is easy to crack when welding, but it can be welded or riveted by a special process. Copper wire is used to refer to the copper wire of the telegraph.

It has good conductivity and is widely used in the manufacture of wires, cables, brushes, etc. It has good thermal conductivity and is often used in the manufacture of magnetic instruments that must be protected from magnetic interference, such as compasses, aviation instruments, etc. Excellent plasticity, easy to hot and cold pressing, can be made into tubes, rods, wires, belts, strips, plates, foils and other copper materials.

There are two types of pure copper products: smelted products and processed products. Advantages and disadvantages of copper wire:

Advantages: strong electrical conductivity and high mechanical strength. Cons:

High cost. Aluminum wire: Pros:

Light weight, good conductivity and low cost. Disadvantages: low mechanical strength, easy oxidation.

The difference between aluminum wire and copper wire.

Let's start with the physical point of view.

Just look up the density table.

1. Copper density:

2. Density of pure iron:

3. The density of aluminum is.

g/cm^3

So copper is much heavier than aluminum in the same volume.

The melting point of aluminum, degrees Celsius.

The melting point of copper is degrees.

Current carrying capacity (conductivity):

In order to ensure the continuous operation of the wire for a long time, the allowable current density is called the safe ampacity.

The general regulations are: copper wire selection 5 8a mm2; Aluminum wire selection 3 5a mm2.

Chemical properties: Let's look at the periodic table first.

Aluminum is in 13th position on the periodic table and copper is in 29th position.

Take a look at this periodic table, why copper and aluminum have such a difference at a glance (conductivity, density, etc.), the following is the electronic distribution map of aluminum, because there is more copper, it will not be on the figure, so at a glance, you can know that copper has more electrons outside the nucleus than aluminum, and there are more free electrons, so the conductivity of copper is much better than that of aluminum, and the relative atomic mass of copper 63 is greater than that of aluminum, so the difference in their density is very clear, extension: according to the periodic table, touch bypass, iron in.

Aluminum and copper are direct, so the relative difference is also between copper and aluminum.