Hard Drawn Bare Copper Conductor

Copper wires that are in their bare form are drawn from pure copper rods without any additional coatings or insulating materials. These wires retain their natural copper color and come in various specifications.

Cu is the chemical symbol for the transition element copper, which has an atomic number of 29. This versatile metal appears red-orange with a shiny metallic luster when freshly cut, and its pure form has a distinctive purple hue. Copper has excellent ductility and high thermal and electrical conductivity, making it a popular material for use in countless electrical and electronic components, cables, and as a building material. Additionally, copper can be alloyed with various elements to create a range of specialized materials with unique properties.

Various shapes of bare copper wires can be produced to meet specific requirements, including flat wires, round wires, and various other types of wires. Additionally, by combining multiple bare copper wires, one can create different stranded wires and multi-stranded wires. This allows for greater versatility and flexibility in their applications.

Hard drawn copper wire is a solid conductor made of copper with a diameter exceeding 1 mm that allows for the conduction of electricity. Its impressive tensile strength makes it resistant to breakage when subjected to longitudinal forces. This type of wire is less resistant to transverse fracture than its soft counterpart and benefits from strong resistance to corrosion. However, it is known for its poor anti-skin effect. Soft wires can conduct more electricity with the same cross-sectional area than hard wires do. Hard copper wire's rigid shape works better for steady arrangements and maintaining its form, unlike soft copper wires which can be challenging to manage and easily entangled, which leads to a chicken nest-like mess.

Good electrical conductivity, as well as favorable physical and mechanical properties, can be attributed to bare copper wire.

Bare copper wire finds its application in various fields, thanks to its ability to be processed and transformed into a range of cables. These cables are extensively used in sectors such as ultra-high voltage power transmission, communication networks, marine industry, automotive sector, photovoltaic systems, electronics, and electromechanical devices. The versatility and adaptability of bare copper wire make it an indispensable component in these industries.

Physical Properties Copper is a fuchsia metal with a density of 8.92 g/cm3. The melting point is 1083.4±0.2°C and the boiling point is 2567°C. Has good ductility. Good thermal and electrical conductivity. Magnetic: Diamagnetic Crystal Type: Face Centered Cubic Structure Resistivity: 1.75×10-8Ω-m Sound Velocity (Room Temperature) 3810 (m/s) Young’s Modulus: 110-128 GPa Shear Modulus: 48 GPa Poisson’s Ratio : 0.34 Mohs hardness: 3.0 Vickers hardness: 343-369 MPa

Brinell hardness: 235-878 MPa Solid density 8.960 g/cm Melt liquid density 8.920 g/cm Specific heat capacity: 24.440 J/(mol-K) Heat of vaporization: 300.4kJ/mol Heat of fusion: 13.26kJ/mol Thermal conductivity: 401 W/m.K expansion coefficient: (25 °C) 16.5 μm/m-K valency is usually +2, and there are also +1 (3-valent copper only appears in a few unstable compounds, such as potassium cuprate KCu02) content in the earth's crust ( ppm): 50 Content in the sun (ppm): 0.7 Ionization energy: 7.726 electron volts Flame color: green

Bare copper wires must be produced and inspected according to the standards of GB/T 3953 "Electrical Round Copper Wire" and GB/T 4909 "Test Methods for Bare Wires".

After the bare copper wire is produced, it must be packaged, stored, handled and transported in strict accordance with customer and industry standards to ensure that the product is free from moisture and damage.

Leoni, Hitachi, Sumitomo, Belden, Nexans, Hengtong Group, Foxconn, Kebao Optoelectronics, etc.

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