Aluminium foundry Rennes / Brittany
Alloys
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- AlSi7 Mg03 T6 EN AC-42100
- AlCu4 MgTi T4 EN AC-21000
- AlZn10 Si8 Mg EN AC-71100
An aluminium foundry in Rennes, at your service for your projects
At Rhonalu, we specialize in aluminium foundry in Rennes. We support industrialists, designers, and manufacturers in the region and beyond, with solid expertise, flexible production capabilities, and a true commitment to quality. Reactivity, precision, robustness: this is the foundation of everything we manufacture. And if you are looking for a local partner capable of turning your ideas into reliable parts, you are in the right place.
Our foundry, located near Rennes, is the direct point of contact between your technical needs and our ability to make them concrete. We understand the constraints of the field, the imperatives of deadlines, and the stakes of reliability. We don’t just pour aluminium: we manufacture parts that must hold, function, and last.
Rhonalu is primarily a human-sized team, experienced and passionate about industrial precision. We work quickly, well, and especially in close contact with our clients. Our geographical proximity to Rennes allows us to intervene rapidly, closely monitor projects, and remain available at every stage.
Our aluminium foundry processes
We master several manufacturing processes, which we adapt according to the type of part, the volumes, the complexity, or your mechanical requirements.
Sand casting remains one of the most versatile processes for producing single parts, prototypes, or small series. It allows for great freedom of shapes, at a controlled cost.
We also use gravity die casting for larger series or for parts requiring a finer surface finish and tighter tolerances. This technique offers an excellent compromise between performance and repeatability.
The whole is accompanied by a robust machine park, a reactive fusion workshop, and integrated quality control. From raw to pre-machined, we adapt the level of finish according to your constraints.
Our areas of activity
Completed projects and sectors we support
We produce aluminium parts for very diverse sectors. Automotive, aerospace, railways, industry in general, construction… Each part has its requirements, and each sector has its standards. We know how to work with these constraints to provide reliable, durable, and perfectly adapted solutions.
Examples? Pump bodies, housings, collectors, flanges, supports, housings, technical chassis, fastening or structural elements. Whether for rapid prototyping or recurring series, we know how to adapt.
Technical support from A to Z
What makes the difference with us is not just the molten metal. It is our ability to support our clients from start to finish.
Our design office helps you to design, model, and optimize your parts from the early stages. We work with 3D CAD tools and advise you to improve manufacturability, reduce costs, or gain performance.
Then, we start production while keeping a close eye on compliance with tolerances and deadlines. We can also provide finishing or pre-machining depending on your needs.
Quality, traceability, commitment
Quality is not an option, it is a daily requirement. We apply rigorous control procedures at all stages of production. Each part is checked, measured, validated before delivery.
Our workshop is equipped to ensure a high level of traceability. We use certified alloys, comply with current standards, and provide the necessary certificates.
We also have a responsible approach to environmental issues. Optimization of raw materials, waste reduction, internal recycling of aluminium: every detail counts for more sustainable production.
Do you have a project?
Contact us, and we will process your request promptly and propose a solution tailored to the specific requirements of your industry.
Our design office is at your service
A foundry for Rennes and its region
We operate throughout Ille-et-Vilaine, but also across Brittany and the Greater West. Working with a responsive partner means being able to communicate easily and react quickly to unforeseen events.
Need a quote for an aluminium part?
Do you have an aluminium foundry project in Rennes or the surrounding area? A part to design, a prototype to test, a series to launch?
Contact us. At Rhonalu, we respond quickly to all requests. Free quotes, technical exchanges, estimated production time: we get straight to the point, without wasting time.
Share your plans, constraints, and ambitions with us. We will take care of the rest.