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High-Performance Flexible Stranded Copper Wire from China Suppliers and Factory for Electricians
Product Features
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Exceptional Flexibility
The multi-strand fine copper wire construction allows for easy bending, twisting, and routing, making it ideal for installations in confined spaces or with complex cable paths.
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Superior Conductivity
Manufactured from high-purity electrolytic copper (typically ≥99.9%) and annealed, it ensures low resistance and high-efficiency current transmission, complying with international conductor standards.
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High Fatigue Resistance & Durability
The stranded design distributes mechanical stress, offering a longer service life and higher reliability than solid-core wires in applications involving frequent flexing, vibration, or movement.
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Easy & Reliable Installation
Its inherent flexibility simplifies manual handling and crimping. The multiple fine strands compact to form a tighter connection with greater contact area under terminals, reducing the risk of hot spots and loosening.
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Effective Heat Dissipation
The micro-gaps between strands facilitate airflow, aiding in heat dissipation during operation.
Application Fields
This flexible stranded copper wire is widely used in demanding scenarios requiring reliable connectivity under physical stress. Key applications include complex wiring within distribution cabinets, equipment terminal connections, grounding system jumpers, power supply for mobile equipment, and interconnections in new energy systems. It is particularly suited for high-demand installations where space is limited, or where vibration and frequent flexing are present.
Structural Composition
Conductor
Material: High-purity electrolytic copper (Cu ≥ 99.9%).
Temper: Annealed (softened) — the key process for achieving flexibility by converting copper from a hard-drawn to a soft state.
Construction: Multiple round copper wires (dozens to thousands), individual wire diameters 0.05mm–0.2mm, spirally stranded in a concentric lay pattern. Finer wires and greater strand count = more flexibility.
Optional Coatings
Bare Copper: The most common and cost-effective option.
Tinned Copper: A tin layer over the copper wires providing anti-oxidation, corrosion resistance, improved solderability, and protection against adverse reactions with certain insulation types.
Silver-Plated Copper: For applications requiring very high frequency performance or lower contact resistance. Superior performance at a higher cost.
Insulation
Materials: PVC (Polyvinyl Chloride), XLPE (Cross-Linked Polyethylene), Rubber (e.g., Silicone, EPR), Fluoropolymers, etc.
Function: Provides electrical insulation and basic mechanical protection. The material determines the cable's temperature rating and resistance to oil, chemicals, and environmental conditions.
Product Specifications
| Nominal CSA (mm²) | Structure | Rough Translation (km/kg) | |
|---|---|---|---|
| Total Number of Wires | Number of Strands × Wires × Cores / Nominal Diameter of Individual Wire | ||
| 0.55 | 280 | 8*35/0.05 | 5.33 |
| 0.65 | 336 | 8*42/0.05 | 6.30 |
| 0.75 | 384 | 8*48/0.05 | 7.27 |
| 0.90 | 456 | 8*57/0.05 | 8.72 |
| 1.00 | 512 | 8*64/0.05 | 9.69 |
| 1.50 | 768 | 8*96/0.05 | 14.53 |
| 2.00 | 1024 | 8*128/0.05 | 19.38 |
| 2.50 | 1280 | 8*160/0.05 | 24.22 |
| 3.00 | 1680 | 8*210/0.05 | 29.06 |
| 3.50 | 1784 | 8*223/0.05 | 33.91 |
| 4.00 | 2048 | 8*256/0.05 | 38.75 |
| 4.50 | 2296 | 8*287/0.05 | 43.59 |
| 5.00 | 2560 | 8*320/0.05 | 48.44 |
| 5.50 | 2800 | 8*350/0.05 | 53.28 |
| 6.00 | 3072 | 8*384/0.05 | 58.13 |
| 8.00 | 4080 | 8*510/0.05 | 77.50 |
| 25.00 | 12840 | 12*1070/0.05 | 242.19 |
| 10.00 | 1280 | 8*160/0.1 | 98.67 |
| 12.00 | 1536 | 8*192/0.1 | 118.40 |
| 16.00 | 2040 | 8*255/0.1 | 157.87 |
| 25.00 | 2960 | 8*370/0.1 | 246.68 |
📐 Custom Orders: Xingma Copper Industry can customize the cross-sectional area according to customer requirements, with single wire diameters ranging from 0.05mm to 0.15mm. Rectangular braided wires are produced using 8-spindle or 12-spindle braiding machines. Cutting lengths are based on drawings or as specified by the customer.
Frequently Asked Questions
Q
What is flexible stranded copper wire and how does it differ from solid-core wire?Flexible stranded copper wire is composed of multiple fine copper wires twisted together, as opposed to a single solid conductor. This construction gives it superior flexibility, fatigue resistance, and ease of installation. Solid-core wire is stiffer and more prone to breaking under repeated bending, making stranded wire the preferred choice for dynamic or confined applications.
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What purity level is the copper used in these wires?The conductor is manufactured from high-purity electrolytic copper with a purity of Cu ≥ 99.9%. This ensures excellent electrical conductivity, low resistance, and compliance with international conductor standards.
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What coating options are available for the copper strands?Three coating options are available: Bare Copper (most economical), Tinned Copper (anti-oxidation, improved solderability, corrosion resistance), and Silver-Plated Copper (for high-frequency or low-contact-resistance applications). The choice depends on the operating environment and performance requirements.
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What cross-sectional sizes and individual wire diameters are available?Standard nominal cross-sectional areas (CSA) range from 0.55 mm² to 25.00 mm². Individual wire diameters range from 0.05mm to 0.2mm. Custom sizes can also be produced with single wire diameters from 0.05mm to 0.15mm, based on customer drawings or specifications.
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What insulation materials are available for insulated wire versions?Available insulation materials include PVC (Polyvinyl Chloride), XLPE (Cross-Linked Polyethylene), Rubber types such as Silicone and EPR, and Fluoropolymers. Each material offers different temperature ratings and resistance to oil, chemicals, and environmental conditions, allowing selection based on specific application needs.
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Can Xingma Copper Industry provide custom-cut lengths and custom specifications?Yes. Xingma Copper Industry offers full customization including cross-sectional area, strand count, individual wire diameter (0.05mm–0.15mm), and cutting lengths. Rectangular braided wires are produced using 8-spindle or 12-spindle braiding machines, and all dimensions can be tailored to customer drawings or project specifications.