Copper-brass cores
NRF designs and produces copper-brass cores with customizable layouts and fin systems. Built for demanding industrial and off-road conditions where reliability and heat transfer efficiency matter most.
Why choose copper brass?
Copper offers 60–70% higher thermal conductivity compared to aluminium, making it ideal for applications that require maximum heat transfer. It also resists corrosion naturally, which ensures long-term performance in harsh, dusty or wet environments.
Built for dust, dirt and debris
NRF copper-brass cores are tailored to your environmental and performance needs — from flat fins for easy cleaning to tighter tube layouts for optimal heat transfer. Whether you’re cooling heavy-duty vehicles, off-road machines or power systems, we engineer the right configuration for your challenge.
For dusty and rough environments like agriculture or construction, flat fins and wider tube spacing help prevent clogging and make cleaning easier. When your priority is thermal performance, tighter tube layouts such as grid or serpentine designs increase surface contact and efficiency.
Examples of copper-brass core designs
Flat fin configurations are an excellent choice for environments where easy cleaning is essential—especially in agricultural, construction, and off-road applications. Their simple, open design helps prevent dirt and debris from accumulating, ensuring consistent airflow and reliable thermal performance in even the harshest, dust-filled conditions.
Flat fin configurations are an excellent choice for environments where easy cleaning is essential—especially in agricultural, construction, and off-road applications. Their simple, open design helps prevent dirt and debris from accumulating, ensuring consistent airflow and reliable thermal performance in even the harshest, dust-filled conditions.
For every application
In the production of our cooling systems, NRF employs various metal joining techniques to ensure robust and reliable assemblies. Understanding the differences between these methods highlights our commitment to quality manufacturing
Soldering
This process joins base metals by melting only the filler material, which adheres to the base metal surfaces through capillary action. Soldering occurs at temperatures below 450°C. Common heat sources include torches, furnaces, and induction coils, each selected based on the specific requirements of the component and filler material composition.
Advantages
- Soldering process has a lower power input and processing temperature compared to other processes.
- It is one of the best options to join dissimilar base materials.
- Being able to join thin-walled parts.
- Soldered joint has minimal thermal distortion and residual stresses in the joints.
- Not needing a post-processing heat treatment.
Brazing
Similar to soldering, brazing involves melting a filler metal to bond base materials without melting them. However, brazing operates at temperatures above 450°C, resulting in joints that are generally stronger than those produced by soldering. This method is particularly suitable for components that require higher strength and thermal resistance.
Advantages
- Joins Dissimilar Materials – Ideal for bonding different metals without altering their properties.
- Minimal Thermal Distortion – Reduces warping and residual stresses compared to welding.
- Strong and Ductile Joints – Can create joints as strong as or stronger than the base metals.
- Mass Production Friendly – Allows multiple components to be brazed at once.
- Lower Processing Temperature – Saves energy and reduces material degradation.
- Accessibility – Can create joints in hard-to-reach areas where other methods may not work.
Welding
Unlike soldering and brazing, welding involves melting the base metals themselves, often with the addition of a filler material, to create a coalesced joint. This technique produces the strongest joints, capable of withstanding high stresses and temperatures, making it ideal for applications demanding maximum structural integrity.
Advantages
- Strong and Durable Joints – Creates high-strength bonds suitable for structural applications.
- Versatility – Can be used with various metals and thermoplastics.
- High Efficiency – Certain welding methods offer fast deposition rates, improving productivity.
- Portability – Some welding techniques use lightweight, portable equipment for flexibility.
