Silver-plated Copper Stranded Wire (SC)

Silver-plated Copper Stranded Wire

Silver-plated copper stranded wire is a composite conductor composed of multiple thin copper wires stranded together and coated with a layer of silver on its surface. It combines the high conductivity of copper with the antioxidant and corrosion-resistant properties of silver, and is commonly used in high-frequency applications High temperature or high reliability scenarios.

Structure and Composition

Conductor core: Multiple strands of high-purity oxygen free copper filaments stranded together to enhance flexibility and fatigue resistance.
Silver plating layer: Covering a copper surface with a silver layer through electroplating or chemical plating processes, Enhance conductivity and corrosion resistance.

Key Features

1. Conductivity: The conductivity of silver (63 × 10 ⁶ S/m) is higher than that of copper (59.6 × 10 ⁶ S/m), and the high-frequency signal transmission loss is lower after silver plating. High frequency current is concentrated on the surface of the conductor, and the silver layer can significantly reduce resistance.
3. Antioxidant properties: Silver is not easily oxidized and has better long-term stability than bare copper, making it suitable for humid or corrosive environments.
4. High temperature resistance: The working temperature can reach 200 °C or higher (with high temperature insulation layer).
5. Mechanical performance: Stranded structure enhances flexibility and is suitable for repeated bending scenarios (such as robot cables).

Manufacturing Process

Copper wire drawing: Drawing copper rods into fine wires.
Electroplated silver: Cyanide silver plating or environmentally friendly cyanide free silver plating process is used to control the uniformity of the coating.
Stranded forming: Multiple silver plated copper wires are twisted at a specific pitch (such as 7 strands, 19 strands) to enhance tensile strength.

Silver-plated Copper Stranded Wire List

Sectional Area (Standard)	Sectional Area (Calculated)	Strands	Single Strand Diameter	Outer Diameter
0.014 mm2	0.01374 mm2	7	0.05 mm	0.15±0.02 mm
0.035 mm2	0.03519 mm2	7	0.08 mm	0.24±0.02 mm
0.06 mm2	0.05498 mm2	7	0.10 mm	0.30±0.03 mm
0.08 mm2	0.07917 mm2	7	0.12 mm	0.36±0.03 mm
0.14 mm2	0.1407 mm2	7	0.16 mm	0.48±0.03 mm
0.20 mm2	0.2149 mm2	19	0.12 mm	0.60±0.05 mm
0.40 mm2	0.382 mm2	19	0.16 mm	0.80±0.05 mm
0.50 mm2	0.4835 mm2	19	0.18 mm	0.90±0.05 mm
0.60 mm2	0.5969 mm2	19	0.20 mm	1.00±0.05 mm
0.75 mm2	0.7894 mm2	19	0.23 mm	1.15±0.05 mm

Silver-plated Copper Stranded Wire Application

Silver-plated copper stranded wire has excellent high-frequency performance, strong oxidation resistance, long service life, high temperature resistance, corrosion resistance and other characteristics. It can be widely used as a connecting wire inside computers, a conductor in the electronic and power industries, a wire in the communication industry, as well as aerospace, military products and other high temperature resistant wires. Specifically, as follows:
High Frequency Electronics
Coaxial cables, RF connectors, 5G base station antennas (to reduce signal attenuation);
Aerospace
Satellite communication cables, onboard equipment (resistant to high and low temperature cycles);
Medical Equipment
MRI coils, endoscope wires (biocompatibility requirements);
Military Industry
Radar systems, missile guidance (high reliability requirements);
High End Audio
HiFi audio cable (reduces sound quality loss).