Definition and Characteristics of Multi Core Copper Wire and Single Core Copper Wire
Multi core copper wire is a type of copper wire composed of multiple conductive cores, commonly used in wire bonding steps during semiconductor device assembly. This type of copper wire has a complex structure and may include a first conductive core, a second conductive core, and a third conductive core. Each layer of core is composed of different materials (such as palladium and copper), which can effectively suppress the corrosion between bonding balls. Multi Core Copper Wire is also widely used in communication fields such as telephone lines, with common specifications including 2-core, 3-core, 4-core, 6-core, and 8-core.
Single core copper wire is a copper wire with a single conductor, characterized by high purity, low resistance, and super plasticity. Compared with traditional continuous casting polycrystalline oxygen free copper materials, the resistance of single crystal copper can be reduced by more than 8%, the cold rolling deformation rate can reach more than 6000%, and there will be no cracks at the edges. Single core copper wire is commonly used for power transmission and signal transmission, with a wide range of diameters ranging from 6.2mm copper rod to 0.1mm copper foil.


Comparison of Mechanical Properties between Multi Core Copper Wire and Single Core Copper Wire
| performance metrics | Single core copper wire | Multi-core copper wire |
| tensile strength | High (single solid structure) | Lower (fine copper wire twisted) |
| flexibility | Poor (high hardness) | Excellent (easy to bend) |
| wear resistance | better | average |
| fatigue resistance | average | Better (suitable for frequent bending) |
The mechanical strength of Single Core Copper Wire is relatively high. Due to being a single wire, as long as the material strength of the wire itself is sufficient, it is less likely to break when subjected to external forces such as tension. The flexibility of Multi Core Copper Wire is their biggest advantage. It can be easily bent and wrapped, making it convenient for wiring in various complex environments.
Comparison of Application Scenarios between Multi Core Copper Wire and Single Core Copper Wire
Multi Core Copper Wire is mainly used in scenarios that require multiple conductors and complex connections. In semiconductor devices, Multi Core Copper Wire achieves electrical connection through wire bonding steps, and its multi-layer structure design can effectively prevent metal to metal corrosion. In the field of communication, Multi Core Copper Wire is commonly used for telephone lines, network lines, etc., which can simultaneously transmit multiple signals.
Single Core Copper Wire is more suitable for scenarios that require high purity and resistance. Single Core Copper Wire is the preferred material in power cables due to its high conductivity and mechanical strength. In electronic devices, Single Core Copper Wire is commonly used in situations that require high-precision connections, such as high fidelity signal transmission for audio equipment.


Our Advantages
Zhejiang IRONFLON Wire&Cable Co., Ltd was founded in 2004 and is located in Yueqing City, Zhejiang Province. It is a high-tech enterprise specializing in the research and development, manufacturing, and sales of special wires and cables. The registered capital of the company is 10.08 million yuan, holding international certifications such as UL, CUL, VDE, and possessing 22 patents and 3 software copyrights. As a large-scale high-end special wire and cable enterprise in China, Tiefulong adopts world-class production equipment and advanced technologies from Japan, Europe, and America, breaking through the traditional management system and forming a unique production management process and technology research and development process.
1. Innovation in production technology: We have eight independent production lines that complement each other, including conductor twisted wire, outer conductor weaving, and outer conductor winding. Mastered the three typical production lines and process technologies for fluororesin cable production. Using ETFE fluoroplastic insulation and FEP or copper wire braided sheath, the rated temperature can reach -100~+150 ℃.
2. Material innovation: Oxygen free pure copper conductor technology to improve conductivity. Fluoroplastic insulation technology enhances high temperature resistance.
3. Performance advantage: The product has passed UL VW-1 and CSA PT1 vertical flame resistance tests and has excellent fire resistance performance. Flexible mineral insulated fire-resistant cables have good conductivity and mechanical and physical properties. Low smoke halogen-free cables do not produce toxic smoke when burned.
4. Widely applicable: The wires and cables produced by our company have excellent conductivity, good flexibility, and weather resistance, and are widely used in industrial automation, building electrification, rail transit, and renewable energy fields.
5. Customized services: Our company provides customized services such as conductor materials, conductor structures, insulation materials (PTFE \ XLPE \ PFA \ FEP \ ETFE \ silicone), conductor specifications, shielding methods, wire colors, etc.








