High-Strength 6000 Aluminum Sheet for Structural Thermal Applications

6000 series aluminum sheets are widely used in structural manufacturing, power electronics, new energy vehicles, and industrial equipment. Alloys such as 6061 and 6063 provide stable strength and good machinability, while 6101 is optimized for electrical and thermal conductivity. However, with the trend toward high power density and lightweight design, conventional 6xxx alloys often face trade-offs between structural strength and heat dissipation performance.

To address this challenge, Chalco has developed 6803 high-strength, high-thermal-conductivity aluminum based on optimized alloy composition and heat treatment processes. This alloy achieves a reliable balance between load-bearing capacity and thermal conductivity, making it suitable for structural-level thermal management applications while ensuring stable supply for industrial projects.

High Strength High Thermal Conductivity 6 Series Aluminum Alloy — Alloy 6803 Exclusive Grade

6803 Aluminum alloy is a high-strength, high-thermal-conductivity 6000 series aluminum sheet developed by Chalco. It delivers thermal conductivity up to 200 W/m·K while maintaining reliable structural load-bearing capacity, enabling a balanced solution for integrated structural and heat dissipation applications.

Compared with conventional 6xxx alloys such as 6061 and 6063, which typically prioritize either strength or conductivity, 6803 is engineered to achieve optimized performance in both structural integrity and thermal management.

Alloy system: 6xxx series (Al-Mg-Si)

Temper condition: Optimized heat-treated condition

Thickness range: ≥ 0.2 mm, customizable

Typical applications: Structural thermal management components

Advantages of 6803 High Strength High Thermal Conductivity Aluminum Alloy

6803 is designed to deliver both structural strength and high thermal conductivity within the 6 series alloy system, making it suitable for high power density and integrated structural thermal applications. Compared with conventional 6xxx alloys that prioritize either strength or conductivity, 6803 enables a more efficient combination of load-bearing and heat dissipation functions.

Balanced strength and thermal conductivity: Delivers thermal conductivity up to 200 W/m·K while maintaining reliable structural load-bearing capacity for heat-dissipating components.

Flexible performance matching: Thermal and mechanical properties can be adjusted through processing to meet different structural and performance requirements.

Suitable for lightweight thin structures: Maintains stable performance in thin sheet applications, supporting lightweight and highly integrated designs.

Excellent processing and manufacturability: Inherits the good machinability, structural stability, and engineering adaptability of 6 series alloys, enabling efficient system integration and large-scale production.

6803 Aluminum Alloy vs 6061/6063/6101

In practical engineering material selection, different 6-series aluminum plates often require a trade-off between strength and thermal conductivity. The 6803 is not positioned to replace 6061 or 6063, but rather to provide a more balanced performance solution in structural thermal management scenarios.

From the perspective of performance distribution:

• 6061 places greater emphasis on structural load-bearing capacity .
• 6063 is more suitable for forming processes .
• 6101 places greater emphasis on electrical and thermal conductivity .
• The 6803 achieves a more balanced match between structural strength and thermal management functionality.

Typical applications of 6803 in structural thermal management

In high-power electronics and new energy systems, structural components are required to support both load-bearing and heat dissipation. Conventional 6 series alloys are typically optimized for a single property—either strength or thermal conductivity—making it difficult to meet the increasing demand for high power density and lightweight integrated designs.

To address this challenge, Chalco has developed and stabilized the production of 6803 alloy for structural thermal management applications. The material has been validated in new energy, power electronics, and communication systems, delivering a reliable balance between structural strength and efficient heat dissipation.

New energy vehicles and electric drive systems: Electric drive controller housings, IGBT module base plates, battery pack support and heat-dissipating structures

Energy storage and photovoltaic systems: PCS converter structural components, power module heat dissipation base plates, load-bearing structures

5G communication and network equipment: Base station power module structures, integrated heat-dissipating load-bearing components

Data centers and server power systems: Server power supply heat dissipation structures, high-power module base plates

High-power electronics and industrial equipment: Structural components for high-frequency converters and load-bearing heat dissipation parts

6803 aluminum alloy production and quality control capabilities

To ensure stable application of 6803 high-strength, high-thermal-conductivity 6000 series aluminum sheets in structural thermal management projects, Chalco provides integrated support from alloy design to mass production, backed by mature 6xxx sheet production and comprehensive quality control.

Complete 6-series aluminum alloy production system

possesses integrated production capabilities for casting, rolling, and heat treatment.

Stable production of the 6803 alloy has been achieved.

Enhanced quality control capabilities

support matching of different enhancement levels.

Performance can be adjusted between strength and thermal conductivity.

The enhancement process is controllable and stable.

Thin-gauge processing capability

supports production of thicknesses of 0.2 mm and above.

Uniform microstructure and stable performance.

Suitable for thin-structure designs.

Quality control measures

Include component analysis and mechanical property testing.

Thermal conductivity is verified batch by batch to ensure batch consistency.

FAQ

Q1: Can 6803 replace 6061 or 6063?

6803 is not a simple replacement for traditional 6061 or 6063 aluminum sheets, but rather provides a more balanced match of strength and thermal conductivity in structural thermal management scenarios. In applications requiring both load-bearing capacity and heat dissipation efficiency, 6803 can serve as an upgraded 6xxx aluminum sheet solution.

Q2: How does the thermal conductivity of 6803 compare to that of 6101?

6101 focuses more on electrical and thermal conductivity and is suitable for applications such as conductive busbars; 6803 , while maintaining a thermal conductivity of 200 W/m·K, provides higher structural strength and is more suitable for structural load-bearing heat dissipation components.

Q3: Does it support customization of different reinforcement levels?

Chalco supports matching of different reinforcement levels, and can adjust the performance balance between strength and thermal conductivity to meet the thermal management requirements of different structural levels.

Q4: What is the minimum thickness?

Currently, we support production of thicknesses of 0.2 mm and above. Specific specifications can be confirmed based on project requirements.

6803 Structural Grade Thermal Management Aluminum Plate Supply and Project Support

Chalco, leveraging its comprehensive 6000 series aluminum sheet production system, provides stable supply and performance matching support for structural thermal management projects. We support customized thicknesses, reinforcement level adjustments, and batch consistency control to meet the integrated structural and thermal design needs of new energy vehicles, power electronics, and high-power systems.

Please feel free to contact us if you require technical parameters, sample support, or material selection advice for your project.