Custom Copper-Aluminum Clad Sheet | Bimetal Composite Plate for EV Battery Busbars & Electrical Power Systems

Custom Copper-Aluminum Clad Sheet

はじめに

1. Our Copper‑Aluminum Clad Sheet is a bimetal composite that bonds pure copper to aluminum through advanced rolling and diffusion technology, delivering excellent electrical and thermal conductivity with significant weight and cost savings. The copper layer offers superior conductivity, solderability, and corrosion resistance, while the aluminum core provides low density and good mechanical strength. This makes it ideal for busbars, electrical connectors, battery tabs, heat spreaders, and other power electronics and new energy applications.

2. We offer full customization of thickness, copper‑to‑aluminum ratio, width, length, and surface treatment to meet your specific design and processing requirements. The sheets feature strong metallurgical bonding, good formability, and compatibility with stamping, bending, and machining processes. Stable performance, consistent bonding quality, and reliable conductivity help you reduce material costs and component weight without sacrificing efficiency. OEM/ODM support and technical consultation are available for project‑based orders.

   仕様

   タイプ	Copper‑Aluminum Clad Sheet / Plate / Strip / Busbar / Bimetal Composite
   Structure	Metallurgically bonded Cu–Al composite: typically Cu/Al, Cu/Al/Cu, or Al/Cu/Al layered structures, produced by roll‑bonding and diffusion bonding
   Material Grade	High‑conductivity copper (e.g., C11000, T2, ETP/OF copper) clad to electrical/structural aluminum (e.g., 1xxx, 3xxx, 5xxx series or AA1070, AA1100, AA3003, AA5052)
   Cu/Al Ratio (Volume/Area)	Customizable copper and aluminum thickness ratio (e.g., 10/90, 20/80, 30/70, 40/60, 50/50 etc.), optimized for conductivity, weight, and cost requirements
   Purity & Conductivity	Copper layer with high electrical and thermal conductivity; aluminum core provides low density and good current‑carrying capacity with reduced material cost
   フォーム	Flat sheet, plate, narrow strip, coil, or busbar blanks; supplied as single sheets, coils, punched parts, or machined components for mass production and prototyping
   Thickness Range	Customizable total thickness, typically from about 0.1 mm up to 20 mm or more; individual Cu and Al layer thicknesses adjustable according to design and current rating
   Width & Length	Width commonly up to several hundred millimeters (depending on alloy and thickness); length as fixed cut‑to‑size pieces or continuous coils
   Bonding Method	Solid‑state roll bonding and thermal diffusion bonding to create a strong metallurgical interface between copper and aluminum layers
   Interface Quality	High bonding strength, low contact resistance at the Cu/Al interface, suitable for high‑current applications and long‑term stable performance
   Mechanical Properties	Good strength‑to‑weight ratio; improved formability compared with pure copper; suitable for bending, punching, stamping, and CNC machining
   Density Advantage	Significantly lower weight than solid copper parts at similar current‑carrying capacity, reducing system mass and copper consumption
   Surface Finish	As‑rolled, brushed, bright, or polished; copper or aluminum side can be supplied with specific roughness for improved bonding, welding, or coating adhesion
   Surface Treatment	Degreased, cleaned, or chemically treated Cu/Al surfaces; optional tin plating, nickel plating, or anti‑oxidation coatings on the copper side or aluminum side as required
   Weldability & Joining	Suitable for ultrasonic welding, resistance welding, laser welding (mainly on copper side), mechanical fastening, and crimping in battery and busbar connections
   Thermal Performance	High in‑plane thermal conductivity from the copper layer; aluminum core helps dissipate heat while limiting weight and reducing thermal stress
   Electrical Performance	Low electrical resistance, high current‑carrying capability, reduced Joule losses compared with all‑aluminum conductors at similar dimensions
   Corrosion Behavior	Copper‑aluminum galvanic couple managed via proper design and surface treatment; optional plating and sealing can enhance corrosion resistance in humid or salt‑spray environments
   Standards & Reference	Manufactured in reference to common copper and aluminum material standards (e.g., ASTM/EN/GB for base metals); specific grades and tolerances available on request
   Application Range	Power busbars, EV and energy‑storage battery tabs, busbar connectors, terminal pads, new energy vehicle power distribution, photovoltaic inverters, heat spreaders, and electronic parts
   Processing Capability	Support for shearing, slitting, stamping, deep drawing (within limits), drilling, tapping, and CNC milling; suitable for automated production lines
   Customization	Tailored Cu/Al structure, thickness, width, coil or sheet format, surface treatment, punching patterns, and finished part fabrication according to drawings or CAD files
   Packaging	Protective packaging for coil or sheet; edge protection and surface film available to prevent scratches and oxidation during storage and transport

参考寸法