Custom Silver Plated Copper Wire | High‑Conductivity SPC Wire for High‑Frequency & High‑Reliability Applications

Custom Silver Plated Copper Wire

Introduction

1. Silver Plated Copper Wire (SPC) is a high‑performance conductor that combines a highly conductive copper core with a silver electroplated surface. Silver has the highest electrical and thermal conductivity of all metals, which significantly improves high‑frequency performance due to the skin effect, reduces signal loss, and enhances solderability and corrosion resistance. SPC wire is widely used in aerospace and military wiring, RF and microwave cables, high‑end audio, telecommunications, and other demanding electronic applications where stable conductivity and oxidation resistance are critical.

2. We offer fully customizable Silver Plated Copper Wire according to your requirements, including conductor size (single or stranded), silver plating thickness (e.g. 1–40 μm or by percentage), insulation type (PTFE, FEP, PFA, ETFE, PVC, etc.), and mechanical properties (soft/annealed or hard‑drawn). Our products are manufactured in reference to international standards such as ASTM B298/B170 and meet stringent requirements for low resistance, consistent plating thickness, and long‑term reliability under thermal and environmental stress. OEM/ODM services and engineering support are available to match your cable design, frequency range, and certification needs.

   Spécifications

   Type	Silver Plated Copper (SPC) Wire / Silver-Coated Copper Conductor / SPC Hook-Up & High-Frequency Wire
   Structure	High‑conductivity copper core with a continuous silver electroplated outer layer; silver coating metallurgically adherent to copper (not paint or foil)
   Material Grade (Core)	High‑purity copper, typically ETP copper (C11000) or oxygen‑free copper (C10100/C10200) in accordance with ASTM B3 / ASTM B170 or equivalent
   Material Grade (Plating)	High‑purity silver, typically ≥ 99.9% Ag, plated in accordance with ASTM B298 or IEC/EN equivalents
   Silver Plating Thickness	Customizable; common nominal plating levels from approx. 2–40 μm (e.g., “light”, “medium”, “heavy” plating) or specified as % of conductor cross‑section in line with ASTM B298
   Electrical Conductivity	Overall conductor conductivity typically ≥ 95% IACS (core copper ≈ 100% IACS; silver ≈ 105% IACS); optimized surface conductivity for high‑frequency (RF) currents due to skin effect
   Temperature Class	Suitable for elevated temperatures; oxidation resistance of silver plating improves performance vs bare copper; final rating depends on insulation system (e.g., 105°C, 125°C, 155°C, 200°C, etc.)
   Formulaire	Single solid wire, stranded conductor, or flexible multi‑strand cable; can be supplied bare or insulated (PTFE, FEP, PFA, ETFE, PVC, XLPE, enamel, etc.)
   Diameter / Size Range	Fine wire to medium sizes, typically from about 0.05 mm up to 6–8 mm single conductor (AWG 44 to AWG 4 equivalent); stranded constructions per customer requirement
   Mechanical Properties	Combines the ductility and strength of copper with improved surface hardness and wear resistance of silver; available in soft‑annealed, half‑hard, and hard‑drawn tempers
   Surface Finish	Bright, smooth, and uniform silver surface; low contact resistance and excellent solderability; controlled plating thickness and adhesion to withstand drawing, stranding, and bending
   Corrosion / Oxidation	Silver plating provides superior resistance to atmospheric oxidation and sulfide formation compared with bare copper; maintains low contact resistance and stable RF performance over time
   Standards & Reference	Manufactured with reference to ASTM B298 (Silver‑Coated Soft or Annealed Copper Wire for Electrical Purposes), ASTM B170 (Oxygen‑Free Copper), and relevant IEC/EN/UL standards for conductor and insulation
   Frequency Performance	High surface conductivity and uniform silver layer minimize skin‑effect losses, making SPC wire suitable for RF, microwave, and other high‑frequency signal and coaxial applications
   Solderability & Joining	Excellent solderability and compatibility with crimping, welding, and termination processes; silver surface promotes wetting and reliable joints
   Application Range	Aerospace and defense wiring, RF/microwave cables, high‑reliability electronic equipment, high‑end audio and instrumentation cables, telecommunications, power/signal harnesses, and environments requiring stable low loss
   Processing Capability	Suitable for drawing, bunching, stranding, cabling, braiding, and over‑extrusion with various insulations; compatible with standard wire and cable manufacturing equipment
   Customization	Tailored copper grade, silver thickness, conductor size (AWG/mm²), strand construction, temper, and insulation type/color according to customer drawings, electrical and environmental requirements
   Packaging	Supplied on plastic or metal spools/reels, or as cut lengths; packed with moisture‑protected wrapping and labeled with size, plating, lot number, and traceability information for safe transport and storage

Reference dimensions