Copper Aluminum Composite Sheet

Name: Copper Aluminum Composite Sheet
SKU: N/A

Product Name：Copper Aluminum Composite Sheet

Standard ：Applicable Standards GB/T 12706, ASTM B432, customized upon request

Plate Size：1000 mm × 6000 mm (Customizable)

Cladding Thickness：1.0 mm – 10.0 mm

Base Thickness：3.0 mm – 50.0 mm

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Product Description

Product Overview

Copper aluminum composite sheet is a high-performance bimetallic material formed by bonding a layer of high-conductivity copper to a lightweight aluminum substrate. It combines the excellent electrical and thermal properties of copper with the low density and cost-efficiency of aluminum. This composite structure is widely used in modern electrical engineering, power transmission, battery technology, electronics, and thermal systems.

We manufacture these sheets using explosion bonding technology, which produces a strong metallurgical bond between the copper and aluminum without melting or forming brittle intermetallic layers. The result is a durable, conductive, and formable material with reliable long-term performance.

Structure and Bonding

The copper aluminum composite sheet consists of

Copper Layer high-purity copper such as C1100 or T2
Aluminum Base industrial-grade aluminum such as AA1050 AA1060 or AA3003

The bonding interface is created through a high-energy explosion bonding process, ensuring atomic-level contact, no delamination, and excellent peel strength even after deep processing such as stamping or bending.

Key Specifications

Item	Specification
Product Name	Copper Aluminum Composite Sheet
Cladding Structure	Copper as Cladding + Aluminum as Base
Manufacturing Process	Explosive Bonding / Roll Bonding / Combined Process
Applicable Standards	GB/T 12706, ASTM B432, customized upon request
Copper Grade	T2, C11000, C12200
Aluminum Grade	1060, 3003, 5052, 6061
Plate Size	1000 mm × 6000 mm (Customizable)
Cladding Thickness (Copper)	1.0 mm – 10.0 mm
Base Thickness (Aluminum)	3.0 mm – 50.0 mm
Bonding Strength	≥ 90 MPa (Shear Strength)
Conductivity	Up to 80% IACS (depending on grade and thickness)
Surface Condition	Mill finish, Brushed, Polished or as required
Dimensional Tolerance	±10% thickness, length/width as per standard
Delivery Condition	As Clad, Annealed, Flattened
Inspection Methods	Ultrasonic Testing, Visual, Conductivity, Shear Test
Certificate	EN 10204 3.1 / 3.2, Third-party available
Applications	Busbars, Electrical Connectors, Power Equipment, Heat Transfer
Packing	Seaworthy packing: plastic film + wooden case + steel straps

Custom sizes and specifications are available upon request.

Main Features

Excellent electrical conductivity and current-carrying capacity
Lightweight solution with reduced material cost
High bonding strength with long-term stability
No intermetallic compounds formed during bonding
Good workability including cutting bending stamping and welding
Corrosion resistant when treated or coated properly
Available in coils sheets or pre-cut sizes for direct use

Application Areas

Busbars and conductive plates for power systems
Battery connector tabs and electrode parts
EMI shielding and grounding components
Heat sinks and heat dissipation plates
PCB substrates and power modules
Automotive and EV battery module assembly
Electrical enclosures and transformer components

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Manufacturing Process

Surface cleaning and preparation of copper and aluminum plates
Explosion bonding using controlled high-energy charges
Post-bond rolling and flattening to final thickness
Annealing and mechanical processing
Cutting slitting and surface finishing
Final inspection and packing

Quality Control

Explosion bonding process under certified technical standards
100 percent visual and dimensional inspection
Peel strength and conductivity testing for each batch
Third-party inspection support available on request
Material traceability and certification included

Packaging and Delivery

Moisture-proof inner packaging with PE film
Steel belt or shrink wrap for coil rolls
Export wooden cases or pallets for sheets
Custom size and small MOQ orders supported
Lead time 7 to 15 working days depending on quantity
Worldwide shipping with logistics support

Why Choose Us?

Specialized in copper aluminum explosion bonded materials
Over 10 years of experience in bimetal sheet manufacturing
Advanced production line with stable quality control
Flexible customization for different industries and standards
Professional support for engineering drawings and project consultation
OEM and global distributor support available

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Raw materials

Raw material processing

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Production workshop

Production and processing

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OEM and Customization Services

Custom copper to aluminum thickness ratios
Special surface treatment or anti-oxidation coating
Die cutting CNC machining and punched patterns per drawing
Color coating labeling and branded packaging options

Frequently Asked Questions (FAQs)

Is the bonding between copper and aluminum permanent
Yes explosion bonding creates a solid metallurgical bond that remains intact during cutting forming or high-temperature processing

What is the difference between copper aluminum composite and copper clad aluminum
They refer to the same concept but composite emphasizes material performance while clad focuses on structural layering

Can this sheet be used for high current applications
Yes the product offers excellent conductivity and is suitable for power busbars battery connections and similar uses

Do you offer coils and sheets
Yes both forms are available and we can customize length and width based on customer requirements

Contact Information

Email:Tailong@tilongtitanium.com

Phone:86-13891718099