Copper Plate

Product Overview

Our Copper Plate is a premium flat metal sheet crafted from high-purity copper (Cu+Ag content ≥ 99.90%, with high-grade options up to 99.99%) through advanced processes including hot rolling, cold rolling, annealing, and precision polishing. Characterized by its uniform thickness, smooth surface, and excellent material consistency, this plate integrates exceptional electrical conductivity, thermal conductivity, malleability, and corrosion resistance—outperforming most alloy plates in scenarios demanding efficient energy transfer, precise processing, or long-term durability. Available in various thicknesses, widths, lengths, and surface finishes, our Copper Plate serves as a core material across industries from electrical engineering to architectural decoration, meeting both functional and aesthetic needs.

Core Features & Advantages

• Ultra-High Purity & Stable Performance: Manufactured with strict impurity control (total impurities ≤ 0.1% for T2 grade, ≤ 0.01% for high-purity TU1 grade), our Copper Plate features a dense microstructure free of pores, cracks, or inclusions. Advanced vacuum casting technology further reduces oxygen content (≤ 0.003% for oxygen-free copper plates), ensuring stable electrical and thermal performance even in extreme operating conditions (e.g., high temperature, high current).
• Exceptional Electrical & Thermal Conductivity: With electrical conductivity reaching ≥ 98% IACS (International Annealed Copper Standard) and thermal conductivity of 385 W/(m·K) at 20℃, it ranks among the top conductive materials globally. This makes it ideal for electrical busbars, heat sinks, and power transmission components where minimal energy loss is critical.
• Superior Malleability & Processability: The plate exhibits excellent ductility (elongation ≥ 30% in annealed state) and can be easily processed via cutting, punching, bending, welding, and deep drawing—even for complex shapes or thin-gauge sheets. Its non-directional mechanical properties after annealing enable uniform deformation, avoiding cracking or wrinkling during precision machining, suitable for high-precision electronic components and decorative crafts.
• Reliable Corrosion Resistance: A natural protective oxide film forms on the surface to resist corrosion in atmospheric environments, freshwater, and non-oxidizing acids (e.g., dilute sulfuric acid, acetic acid). For harsh environments (e.g., marine, industrial chemical areas), optional surface treatments (such as tin-plating, nickel-plating, or passivation) further enhance corrosion resistance, extending service life to 30+ years.
• Diverse Customization Options: We offer comprehensive customization to match specific project requirements:
  • Dimensions: Thickness from 0.1mm (thin foil-like plates) to 50mm (heavy-duty plates); width from 100mm to 2000mm; length from 500mm to 6000mm (customizable for longer lengths via splicing).
  • Surface Finishes: Mill finish (standard, cost-effective), polished finish (mirror-like luster, Ra ≤ 0.1μm for decorative use), brushed finish (textured surface for anti-glare needs), and plated finish (tin, nickel, silver for enhanced conductivity or corrosion resistance).
  • Grades: T1 (99.95% Cu+Ag), T2 (99.90% Cu+Ag), TU1/TU2 (oxygen-free copper), and TUP (phosphorus-deoxidized copper) for different application scenarios.

Technical Specifications

Typical Applications

Leveraging its versatile performance, our Copper Plate is widely used across key industries:

• Electrical & Electronics: Electrical busbars for power distribution systems, heat sinks for CPUs and LED lighting, circuit board substrates, and connector plates—benefiting from high conductivity and heat dissipation.
• Industrial Machinery: Gaskets and seals for high-pressure valves, heat exchanger plates, and electrode plates for electrochemical equipment—utilizing corrosion resistance and thermal conductivity.
• Construction & Architecture: Decorative wall panels, ceiling tiles, and roof cladding (showcasing natural copper luster that patinas beautifully over time); grounding plates for building electrical systems—combining aesthetics and functionality.
• Automotive & Transportation: Heat exchanger plates for automotive radiators and air conditioners, battery current collectors for electric vehicles (EVs), and decorative trim for luxury vehicles—withstanding vibration and temperature fluctuations.
• Chemical & Marine: Reaction vessel linings (resisting chemical corrosion), marine anti-fouling plates, and offshore platform grounding plates—relying on long-term corrosion resistance in harsh environments.
• Arts & Crafts: Sculptures, jewelry bases, and custom decorative pieces—taking advantage of malleability and unique metallic appearance.

Quality Assurance

Our Copper Plate is produced in ISO 9001-certified facilities, adhering to international standards such as ASTM B152 (American Standard) and GB/T 2040 (Chinese Standard). A strict full-process quality control system is implemented, covering:

• Raw material testing: X-ray fluorescence spectrometry for chemical composition analysis to ensure purity compliance.
• Processing inspection: Laser thickness gauges and coordinate measuring machines (CMM) for dimensional accuracy; surface roughness testers for finish quality.
• Performance testing: Kelvin bridges for electrical conductivity; universal testing machines for tensile strength and elongation; salt spray chambers for corrosion resistance.
• Final inspection: Ultrasonic flaw detection to eliminate internal defects (e.g., pores, inclusions) and ensure structural integrity.

We provide pre-sales technical consultation (material grade selection, dimension optimization) and after-sales support, including custom cutting and machining guidance. Detailed material certificates (e.g., Mill Test Report) and test data are supplied with each order for traceability.

For inquiries about product samples, custom dimensions, high-purity grade availability, or pricing, please contact our sales team. We are committed to delivering high-quality Copper Plates that meet your precision, performance, and application requirements.