STIRWELD FSW TOOLS
FSW tools for
copper welding
Designed to resist up to 900°C – for durable, high-performance copper welds.
Mastering Heat Resistance and Precision: Stirweld FSW Tools for Copper Welding

The challenge
Copper, known for its high thermal conductivity, poses specific challenges during the FSW (Friction Stir Welding) process. As welding progresses, temperatures in the weld zone can climb up to 900°C — an extreme environment for any tool.
Most standard FSW tools aren’t built to handle such heat. Their lifespan drops sharply, leading to frequent replacements, production interruptions, and increased operating costs.

The Stirweld solution
Recognizing this significant hurdle, Stirweld has innovated and introduced FSW tools specifically crafted from materials that can withstand high-temperature environments. By investing in these specially-designed tools, not only is the lifespan of the tool considerably extended, but the integrity and efficiency of the weld are also ensured. These tools have proven particularly beneficial for applications like efficient water heat sinks and bus bars, which play crucial roles in electrical systems. Through our dedication to excellence and innovation, we aim to provide solutions that enhance the overall welding process and final product quality.

FSW Tool Collection for Copper Welding
Copper, renowned for its superb conductivity and versatility, demands unique welding tools for optimal results. Within our collection, you’ll discover specially designed FSW tools tailored to meet the challenges and intricacies of copper welding, ensuring precision and efficiency at every step.
WELD PENETRATION | WELDING TYPE | TOOL REFERENCE |
1 to 2 mm | Butt, lap, T-shape | F-CU-1-X |
2 to 3.5 mm | Butt, lap, T-shape | F-CU-2-X |
3 to 4.5 mm | Butt, lap, T-shape | F-CU-3-X |
To further enhance your welding experience, we present tools with a smart version capability: real-time temperature recording during the welding process. Whether you prefer the reliability of a fixed pin or the adaptability of a retractable one, our range caters to both preferences. While this collection showcases our standard offerings, remember that we’re not limited by it. Should you have a unique requirement, we’re on standby to develop specific tools in alignment with your specific applications, delivering a custom-built solution for your needs.
Frequently Asked Questions
1. Why is welding copper more difficult than other metals?
Because of its high thermal conductivity. Copper dissipates heat quickly, which makes it hard to maintain a stable weld zone — especially at high temperatures. That’s why tools must be built to resist intense thermal stress.
2. How do Stirweld tools improve copper welding results?
They’re made from materials that withstand temperatures up to 900°C without degrading. This means fewer tool changes, more consistent welds, and less production downtime.
3. What types of copper applications are these tools used for?
Mainly in high-performance systems like bus bars and water-cooled heat sinks, where precision and conductivity are critical.
4. Do I need smart tools with temperature tracking for copper?
If your process requires tight thermal control or weld traceability, yes. Our smart tools provide real-time temperature data to help you monitor and optimize the welding process.
5. What if my copper part requires a non-standard weld?
No problem. We design custom FSW tools based on your part geometry, weld depth, and production needs — so you get a tool that fits your process exactly.
Maximize Your Copper Welding Efficiency!
Harness the power of precision with our FSW tools built for copper. Whether you choose from our standard collection or request a custom design, you’ll ensure strong, reliable welds — every time.