Copper Wire

What is copper wire?

Copper wire is an electrical conductor made of the metal copper that exhibits a brownish-red metallic luster. Copper wire is favored for its excellent electrical conductivity, thermal conductivity, and corrosion resistance. It is usually found in long continuous segments and can vary in diameter depending on its use, from very fine wire used in electronic equipment to thicker wire used in power transmission. Copper wire is used in a wide range of applications such as electrical wiring, telecommunications, electronics and power transmission, and is commonly used as an electrical material for circuit connections, motor windings and more.

team introduction

Good conductivity

The most important characteristic of any material being used in electrical wirings is its conductivity. Copper is a good conductor of electricity which acts in its favor. If compared to the other metals, then silver is the only metal found to be a better conductor than copper. Its conductivity is the primary reason it's seen everywhere.

Great heat resistance

Copper is resistant to heat and has a high melting point which makes it an ideal material for numerous electrical and heat associated components. It is also a good conductor of heat for which it is used as coatings for corrosion protection.

High flexibility

Flexibility is very important for the material to give the desired shape and size. The malleability defines the flexibility which is high for copper. Copper can be easily beaten into sheets or drawn into wires. Copper wires are popular in electrical settings as they can be beaten into thin wires and of the shape that fits in the required area.

Ductility

Copper exhibits great ductility which is the property of the wire to withstand high tensile stress. The copper is beaten into thin wire owing to its good ductility. They can be elongated into wires without becoming brittle.

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Applications of Copper Wire

Power Transmission and Distribution

Copper wire is widely used in power transmission and distribution systems because of its good electrical conductivity properties. It is used in the manufacture of cables, conductors, wires, etc. for the transmission of electrical energy to domestic, industrial and commercial uses.

Electronics and Communications

Copper wire is also widely used in the field of electronics and communications. It is used in the manufacture of electronic devices, circuit boards, connectors and wires etc. for the transmission of electrical signals and data.

Automotive Industry

Copper wire plays an important role in the automotive industry. It is used in the manufacture of electrical systems, cables and wires in automobiles for transmitting electrical energy and signals. Copper wire is also used to make coils and coil wires for automobile engines.

Construction and Building Decoration

Copper wire is widely used in construction and building decoration due to its excellent electrical conductivity and corrosion resistance. It can be used to make electrical wiring, lighting fixtures, sockets and switches etc.

Production process of copper wire

Copper Ore Beneficiation

Copper ore beneficiation is the first step of copper industrial production. The raw ore is physically beneficiated, chemically beneficiated and magnetically beneficiated to get the concentrate containing copper minerals. Then the concentrate is processed by flotation or re-election to produce a copper concentrate containing more than 1% copper.

Smelting

Copper concentrate needs to be smelted to extract copper. Copper concentrate smelting can be used in two methods: pyrometallurgical smelting and hydrometallurgical smelting. Pyrometallurgical smelting is mainly used in flash furnace, converter and electric furnace and other smelting equipment. Wet smelting mainly uses electrolysis, through electrolysis to reduce copper ions deposited.

Refining

The copper obtained from smelting has different degrees of impurities, so it needs to be refined to improve the purity of copper. Refining mainly fire refining and electrolytic refining two kinds. Fire refining uses flame heating and melting to remove impurities, and electrolytic refining mainly removes impurities through electrolysis.

Copper bar production

After refining the electrolytic copper also needs to be cast, rolled, extruded and other processes to be made into copper rods. First of all, the purity of the electrolytic copper is poured into the copper pool, and after two rolling mill rolling, the copper bar processed into the appropriate diameter and length, and then through the drawing machine for drawing process.

Drawn copper wire

After the production of copper rods, and finally get the finished copper wire. Drawing is made of copper wire is the main process, that is, through the copper rod through a number of drawing, so that its diameter gradually become smaller, longer. Then, the copper wire after processing, cutting, cleaning and other steps, and finally get the finished copper wire.

How to choose copper wire?

Material

High purity copper has better electrical conductivity and corrosion resistance, and copper wires containing more than 99% copper are considered to be of high quality.

Specification

According to the use of demand to choose the appropriate conductive cross-sectional area, the right specification can balance the current load and the requirements of the use of occasions, to avoid excessive resistance and overheating.

Appearance and physical properties

Good copper wire should have a regular appearance, no obvious flaws, oxidation and scratches, moderate hardness, long service life, not easy to age and brittle.

Voltage level and ambient temperature

Select the appropriate copper wire according to the voltage level and ambient temperature of the application to ensure electrical safety and stability.

Copper wire specifications

This table lists the American Wire Gauge (AWG) sizes for copper conductors. In addition to wire size, the table provides values for load (current) carrying capacity, resistance, and maximum frequency. The resistance and skin depth noted are for copper conductors only.

Diameter [inches]	Diameter [mm]	Resistance [Ohms / 1000 ft.]	Resistance [Ohms / km]	Max Current [Amperes]	Max Frequency for 100% skin depth
0.46	11.684	0.049	0.16072	302	125 Hz
0.4096	10.40384	0.0618	0.202704	239	160 Hz
0.3648	9.26592	0.0779	0.255512	190	200 Hz
0.3249	8.25246	0.0983	0.322424	150	250 Hz
0.2893	7.34822	0.1239	0.406392	119	325 Hz
0.2576	6.54304	0.1563	0.512664	94	410 Hz
0.2294	5.82676	0.197	0.64616	75	500 Hz
0.2043	5.18922	0.2485	0.81508	60	650 Hz
0.1819	4.62026	0.3133	1.027624	47	810 Hz
0.162	4.1148	0.3951	1.295928	37	1100 Hz
0.1443	3.66522	0.4982	1.634096	30	1300 Hz
0.1285	3.2639	0.6282	2.060496	24	1650 Hz
0.1144	2.90576	0.7921	2.598088	19	2050 Hz
0.1019	2.58826	0.9989	3.276392	15	2600 Hz
0.0907	2.30378	1.26	4.1328	12	3200 Hz
0.0808	2.05232	1.588	5.20864	9.3	4150 Hz
0.072	1.8288	2.003	6.56984	7.4	5300 Hz
0.0641	1.62814	2.525	8.282	5.9	6700 Hz
0.0571	1.45034	3.184	10.44352	4.7	8250 Hz
0.0508	1.29032	4.016	13.17248	3.7	11 kHz
0.0453	1.15062	5.064	16.60992	2.9	13 kHz
0.0403	1.02362	6.385	20.9428	2.3	17 kHz
0.0359	0.91186	8.051	26.40728	1.8	21 kHz
0.032	0.8128	10.15	33.292	1.5	27 kHz
0.0285	0.7239	12.8	41.984	1.2	33 kHz
0.0254	0.64516	16.14	52.9392	0.92	42 kHz
0.0226	0.57404	20.36	66.7808	0.729	53 kHz
0.0201	0.51054	25.67	84.1976	0.577	68 kHz
0.0179	0.45466	32.37	106.1736	0.457	85 kHz
0.0159	0.40386	40.81	133.8568	0.361	107 kHz

Our Factory

our services

Customized Copper Product Design and Manufacturing

We design and manufacture copper products to meet the specific needs of our customers for their applications. Whether it is a unique size, shape or performance requirement, our engineering team can provide customized solutions.

Copper Material Supply and Inventory Management

We provide our customers with a stable and reliable supply of copper materials, as well as advice on inventory management based on customer needs and market conditions. We ensure that the inventory is sufficient to meet the immediate needs of our customers.

Copper Technical Consultation and Training

Our technical team has extensive industry experience and expertise, and can provide customers with technical consulting to answer questions about copper material applications, processing and performance. In addition, we can also provide targeted training to help customers better use copper products.

Copper material cutting and processing

We provide copper cutting and machining services, cutting copper materials into specified lengths or machining them into specific shapes according to customers' needs. We have advanced processing equipment and professional technicians to ensure processing quality and efficiency.

Quick Response and Emergency Delivery

We are committed to providing our customers with quick response and emergency delivery services. We will mobilize resources quickly to ensure that copper products are delivered to customers in the shortest possible time when they encounter urgent needs.

Quality Assurance and After-sales Support

We always adhere to a strict quality management system to ensure that the copper products we supply meet national standards and customer requirements. We provide comprehensive after-sales support, including handling of product quality problems, return and exchange services, etc., to ensure that customers' rights and interests are protected.

FAQ

Q: Why do I need to use copper wire?

A: Copper wire is widely used for its excellent electrical conductivity, high ductility and good corrosion resistance. In electrical and electronic equipment, copper wires are able to transmit current efficiently and ensure the normal operation of the equipment. In addition, copper wire has good heat resistance and aging resistance, which makes it suitable for various environments and usage scenarios.

Q: How to connect copper wires correctly?

A: When connecting copper wires, you should ensure that the wire ends are clean and free of oxidation. Specialized terminals, connectors or soldering can be used to connect copper wires. For high current transmission, crimping or soldering is recommended to ensure a strong and reliable connection. During the connection process, be sure to follow safety procedures to avoid electric shock or short circuit.

Q: Can copper wire be exposed to outdoor environments?

A: Copper wire can be exposed to outdoor environments, but weathering and protective measures need to be considered. In outdoor environments, copper wires may be affected by elements such as weathering, sunlight and oxidation. Therefore, it is recommended to use copper wires with good weather resistance and take protective measures, such as installing protective sleeves or applying protective coatings, if necessary, to extend their service life.

Q: How much current can copper wire carry?

A: The amount of current a copper wire can carry depends on its cross-sectional area and material. Generally speaking, the larger the cross-sectional area, the higher the current that the copper wire can carry. At the same time, the conductivity of copper wire is also related to its purity. When selecting copper wire, you should choose the appropriate cross-sectional area and material according to the actual demand and the amount of load current.

Q: Does copper wire have losses when transmitting electricity?

A: Yes, copper wire has some loss when transmitting electrical energy. This is mainly due to the existence of resistance, the current through the copper wire will generate heat, resulting in energy loss. In order to reduce the loss, you can choose copper wires with larger cross-sectional area to reduce the resistance; at the same time, reasonable design of the circuit layout, reduce the length of the line, can also effectively reduce the loss.

Q: Can copper wire replace other types of wires?

A: Although copper wire has excellent conductive properties, it is not suitable for all occasions. In some specific application scenarios, it may be necessary to use other types of wires, such as aluminum wires and alloy wires. Therefore, when selecting wires, you should choose the right type of wire based on the specific application needs and scenarios.

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