Tin Coated Copper Clad Steel Wire (TCCS) | High-Performance Tinned Composite Conductor

In the fast-evolving electronics and cable manufacturing industries, choosing the right conductor material is essential for achieving reliable electrical performance, superior solderability, and long-term durability under demanding conditions. Tin Coated Copper Clad Steel Wire (TCCS), commonly referred to as Tinned Copper Clad Steel Wire, stands out as a high-performance composite wire that perfectly balances mechanical strength, electrical conductivity, and corrosion resistance.

This advanced three-layer wire features a high-quality low-carbon steel core metallurgically bonded with a copper cladding layer, finished with a uniform thin tin coating (approximately 1 μm thick). The result is a cost-effective alternative to pure copper wire that delivers excellent conductivity (typically 40% IACS), high tensile strength, and outstanding processability for automated production lines.

1. Key Applications of TCCS Wire

Tin Coated Copper Clad Steel Wire is widely specified for critical signal and power transmission applications, including:

• Lead wires and jumpers in electronic components and circuit assemblies
• Inner conductor (core wire) for RF coaxial cables and high-frequency signal cables
• Braided shielding wires used in flexible connection cables for electrical devices, switching appliances, and industrial equipment
• Shielded network wires, multi-core signal connecting cables, and data transmission lines
• Grounding conductors and specialty wiring where vibration resistance and long storage life are required

Its combination of high mechanical strength and reliable solderability makes TCCS the preferred choice for manufacturers seeking consistent quality in high-volume production of RF cables, consumer electronics, and automotive wiring harnesses.

2. Product Structure & Construction

TCCS wire is manufactured through a precise cladding process followed by electroplating or hot-dipping of pure tin:

• Steel Core: Provides superior tensile strength and rigidity
• Copper Cladding: Ensures excellent electrical conductivity and signal integrity
• Tin Coating: Delivers exceptional solderability, oxidation resistance, and a smooth, bright surface finish

The thin tin layer (≈1 μm) protects the copper from oxidation while maintaining long-term weldability, even after extended storage periods.

3. Outstanding Advantages of Tinned Copper Clad Steel Wire

TCCS wire offers several technical and economic benefits that set it apart from traditional conductors:

1. Excellent Solderability – The tin coating ensures rapid wetting and strong, reliable solder joints in automated soldering processes.
2. Long-Term Storage Stability – Weldability remains outstanding over time with no degradation, allowing extended shelf life without special storage conditions.
3. Smooth, Bright & Uniform Surface – The tinned finish is visually appealing, low-friction, and resistant to scratching during high-speed braiding and cabling operations.
4. Stable & Reliable Performance – Consistent material properties guarantee high production yield, reduced defects, and dependable performance in finished electronic assemblies.

Additional benefits include better corrosion resistance than bare copper, significantly higher breaking strength than solid copper wire of the same diameter, and substantial cost savings for high-volume applications.

4. Technical Specifications & Properties

TCCS wire is produced in accordance with international standards ASTM B520 and SJ/T 2421. The following table shows representative values for 40% conductivity grade (tin layer thickness ≈1 μm):

Note: Custom diameters, conductivity levels, and tin coating thicknesses are available upon customer request.

5. Professional Packaging & Delivery

To ensure the safety and quality of your goods during transportation and storage, we provide professional, environmentally friendly, and highly efficient packaging solutions. TCCS wire is precision-wound onto sturdy plastic or metal spools, then securely packed in moisture-resistant cartons or reinforced plywood cases according to customer specifications. This guarantees damage-free delivery and easy handling on your production floor.