Manufacturer of flexible wire products and electrical conductors made of copper and copper alloys – from single wire to finished assemblies.
Aerumtec GmbH
Weißenburg (Treuchtlinger Str. 20)New on Amplifa
About Aerumtec
Aerumtec GmbH, based in Weißenburg, is a specialist manufacturer of wires, strands, braids and ropes made of copper, electroplated copper, Histral® alloys as well as special materials such as silver, pure nickel, stainless steel, tin and aluminium. The product range extends from single wire to bundled and concentric strands, round ropes, shielding braids and flexible busbars to resistance-welded strands, assemblies and traditional Leonese goods. At the Weißenburg site, with three production halls covering 24,247 m², the company covers the entire value chain: heavy wire drawing, electroplating (tin, silver, gold), fine wire drawing, bundling, stranding, braiding, rolling, compacting and welding. Customers come from the automotive industry (including e-mobility), aerospace, data transmission, medical technology, renewable energies as well as industrial applications such as energy storage systems and switch cabinets. Around 200 employees manufacture at the site; after the carve-out from LEONI AG in 2023, the company operates as an independent supplier of high-quality copper wire.
- Site
- Weißenburg
- Processes
- Heavy wire drawing (wire drawing), Fine wire drawing, Electroplating (tin, silver, gold), Bundling, Stranding (strand manufacturing), Braiding (braids, shielding braids, bobbinet strands), Rolling (e.g. flat wires, profile wires), Compacting
- Materials
- Copper Cu-ETP, Copper Cu-OF, 27% nickel-plated copper, Pure nickel, Silver (fine silver 99.97%), Stainless steel V4A, Tin, Aluminium
- Certificates
- ISO 14001:2015, EMAS (EC No. 1221/2009), EN 10204 inspection certificates (2.1/3.1)
- Founded
- 1569
- Employees
- 200
- Industries
- Automotive industry (incl. e-mobility), Aerospace, Data transmission, Medical technology, Industrial applications (energy storage systems, switch cabinets), Renewable energies
- 01
Heavy wire drawing
- 02
Electroplating (tin, silver, gold)
- 03
Fine wire drawing
- 04
Bundling
- 05
Stranding
- 06
Braiding
- 07
Rolling
- 08
Compacting
- 09
Welding/Assembly
Materials and Processes
Copper Cu-ETP
Electrolytic copper as the standard conductor material for wires, strands and braids.
Copper Cu-OF (oxygen-free)
Oxygen-free copper for demanding electrical applications.
27% nickel-plated copper
Nickel-plated copper as a coated conductor material.
Pure nickel
Conductor material for special applications.
Silver (fine silver 99.97%)
Highest electrical conductivity of all elements, used among other things for electronics, textiles and the creative sector.
Stainless steel V4A
Corrosion-resistant chromium-nickel steel, among other things for shielding braids.
Tin
Tin plating of copper conductors as well as alloying component.
Aluminium
Lightweight conductor material for suitable applications.
Histral®H high-strength alloys (e.g. H65, H79, H64, H77, H85, H72, H69, H26)
Copper-based alloys with exceptional tensile strength and temperature resistance.
Histral®R resistance alloys (e.g. R51, R56, R55, R54, R53, R15)
Resistance alloys with precisely tuned resistance values.
Locations
Weißenburg
DEHeadquarters and production
- Materials
- Copper (Cu-ETP, Cu-OF), electroplated copper, Histral® alloys, silver, stainless steel 1.4401, pure nickel
- Heavy wire drawing machines
- Electroplating lines (tin, silver, gold)
- Fine wire drawing machines
- Bundling machines
- Stranding machines
- Braiding machines
- Rolling mills
- Compacting machines
- Welding systems
Products
Inside the production
Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Heavy wire drawing (wire drawing)Forming | – | – | – | – | Cu-ETP, Cu-OF, Histral® alloys |
| Fine wire drawingForming | – | – | – | – | Copper, electroplated copper, Histral® alloys |
| Electroplating (tin, silver, gold)Surface | – | – | – | – | Copper |
| BundlingForming | – | – | – | – | Copper, copper alloys |
| Stranding (strand manufacturing)Forming | – | – | – | – | Copper, copper alloys |
| Braiding (braids, shielding braids, bobbinet strands)Forming | – | – | – | – | Copper, stainless steel 1.4401 (V4A), copper alloys |
| Rolling (e.g. flat wires, profile wires)Forming | – | – | – | – | Copper, copper alloys |
| CompactingForming | – | – | – | – | Copper, copper alloys |
| Welding (resistance-welded strands and modules)Joining | – | – | – | – | Copper, copper alloys |
| Punching (hole, radius) for flexible busbarsForming | – | – | – | – | Copper |
| Calibration (precise height) for flexible busbarsForming | – | – | – | – | Copper |
| Laser marking (DMC etc.)Surface | – | – | – | – | Copper |
| Deburring by coiningForming | – | – | – | – | Copper |
| Soldering of contact elementsJoining | – | – | – | – | Copper (silver-plated, tin-plated, nickel-plated) |
| Manufacture of Leonese goods (creative wires, spinning-wire strings, flatté, twisted yarns,Forming | – | – | – | – | Copper, copper alloys, gold-plated and silver-plated wire |
| Assembly (flexible copper connectors, custom assemblies)Assembly | – | – | – | – | Copper, copper alloys |
| Engineering services (development of custom wire solutions, prototype construction up toEngineering | – | – | – | – | Copper, copper alloys |
Additional services
Quality and Sustainability
Aerumtec pursues an integrated QHSE approach with process-oriented management systems; the environmental management system is certified to ISO 14001:2015 and the company is registered in the EMAS register (DE-158-00124, valid until 30.06.2028). Inspection certificates in the form of works and acceptance test certificates according to EN 10204 (2.1 and 3.1) are offered, supplemented by IMDS entries as well as RoHS/REACH compliance confirmations.
| Evidence | Weißenburg |
|---|---|
| ISO 14001:2015 | |
| EMAS (EC No. 1221/2009) | |
| EN 10204 inspection certificates (2.1/3.1) |
History
- 1569
Anthouni Fournier from Lyon founds a workshop for the manufacture of Leonese goods in Nuremberg
- 1917
Merger of three successor companies to form Leonische Werke Roth-Nürnberg AG
- 1920er
First wires and round strands for the electrical industry
- 1931
Renamed Leonische Drahtwerke AG, Nuremberg; start of production of rubber-insulated cables
- 1956
Start of cable harness manufacturing
- 1969
New construction of the Bad Kötzting plant
- 1991
Acquisition of aurnhammer+benedict GmbH & Co. KG, Weißenburg
- 1995
Founding of LEONI Wire (Changzhou) Co. Ltd., China
- 1996
Acquisition of Temco Ltd., Cinderford, UK
- 1999
Renamed LEONI Draht GmbH, Weißenburg; complete acquisition of Haarländer GmbH, Roth
- 2023
Capmont Opportunities GmbH acquires the LEONI Business Group Wire Products & Solutions; spin-off from LEONI AG, renaming to Aerumtec GmbH
- 2024
Discontinuation of production in Bad Kötzting