Aluminum Brazing Strip Coil for Automotive Cooling Systems

2026-05-27

Automotive cooling systems are crucial for the stable operation of a vehicle's powertrain, electronic control, and battery systems. Aluminum brazing strip coils, as the core heat exchange substrate for these systems, have completely replaced traditional copper materials due to their lightweight, high thermal conductivity, and precision brazing capabilities, becoming the preferred material for thermal management in both gasoline and new energy vehicles. Haomei Aluminum has been deeply involved in aluminum brazing strip coil for automotive cooling system for many years. Combining the stringent operating standards of OEMs with experience in mass production for export, Haomei Aluminum has specifically optimized product formulations and manufacturing processes to create dedicated aluminum brazing sheet coils suitable for all types of automotive cooling components, perfectly adapting to the complex operating environment of high temperatures, vibrations, and alternating temperature changes in vehicles.

Automotive aluminum brazing strip coils adopt a metallurgical composite three-layer/double-layer structure to meet the differentiated production needs of automotive cooling components.
The industry mainstream uses 3003 aluminum alloy as the core material. This alloy possesses excellent thermal fatigue resistance and structural stability, capable of withstanding long-term high and low temperature alternating conditions from -40℃ to 150℃ during automotive operation. It also maintains good stamping and bending performance, making it suitable for processing complex cooling channels.
The surface brazing layer uses 4343 and 4045 special brazing alloys, with precise control of silicon content to form a stable low-temperature brazing system. The melting point of the brazing layer is much lower than that of the core material, achieving a porosity-free, highly dense weld joint without damaging the mechanical properties of the substrate. This completely solves the problems of weld cracking, air and water leakage caused by long-term vibration of vehicle equipment.

In terms of manufacturing processes, we rely on precision hot-rolled composite production lines to strictly control the thickness tolerance, flatness, and composite uniformity of the aluminum brazing sheet coil strips. The product thickness is controllable within a range of 0.15-2.5mm, fully compatible with automated high-speed stamping and brazing production lines in the automotive industry. All products undergo ultrasonic full inspection to ensure that the interlayer bonding rate meets standards and eliminates the risk of delamination failure later. Simultaneously, we optimize the rolling process to reduce residual stress in the material, effectively avoiding deformation and warping issues after batch processing, meeting the large-scale mass production needs of automakers.

Compared to ordinary civilian heat exchange aluminum materials, automotive aluminum brazing strip coils offer stronger adaptability to various operating conditions. Their high thermal conductivity can quickly dissipate heat from the powertrain, battery, and electronic control systems, effectively reducing overall vehicle energy consumption. The brazed joints exhibit extremely high airtightness and structural strength, withstanding the high-pressure cycling impact of the cooling system. Their lightweight characteristics significantly reduce the vehicle's weight, improving range and fuel economy, aligning with the automotive industry's trend towards energy conservation and emission reduction.

Haomei aluminum brazing strip coil products are widely compatible with various core automotive cooling components, covering radiators, air conditioning condensers, intercoolers, and oil coolers for gasoline vehicles, as well as core components such as battery liquid cooling plates, electronic control coolers, and heat pump heat exchangers for new energy vehicles. As export-grade automotive base materials, our aluminum brazing sheet coil products strictly adhere to automotive industry quality standards, exhibiting strong batch stability and meeting the procurement needs of global automakers' supply chains. We provide domestic and international customers with highly reliable and cost-effective vehicle thermal management solutions

See Also...