Diehl Metal Applications

• 1391 Number of employees (in 2024)
• € 262 million Sales per year (in 2024)
• >50 State-of-the-art punching lines
• >30 Reel-to-Reel plating lines, 3 full-automatic barrel plating lines
• >100 million Produced plastic-metal hybrid parts for mobility solutions on automated plastic overmolding lines

Products

• Press-fit zones

  

  The better contact

  Diehl Metal Applications' press-fit zone contacts reliably connect printed circuit boards and electromechanical components without solder. They are perfectly tailored to the high demands of the automotive industry. Our portfolio includes validated press-fit geometries that can be combined with a variety of customer-specific connector shapes.

  DMA press-fit zone contacts offer clear advantages, whether you need standard SPI pins with short delivery times and no tooling costs or customized solutions. These advantages include no soldering errors, no flux residues, no thermal stress on components, fast and cost-efficient assembly, double-sided assembly, and easy recycling by pressing out the pins.

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• Metal-plastic hybrid parts

  

  Function Meets Lightweight Construction

  Diehl Metal Applications combines metal and plastic to create high-performance composite systems that offer precision, functional diversity, and weight reduction. Our portfolio includes complex metal-plastic hybrid parts for ADAS, sensors, ECU controls, electrification, and mobility solutions that meet the highest standards of function and reliability. Using state-of-the-art insert molding technology, our in-house toolmaking facilities, and continuous process control, we deliver durable, highly functional solutions tailored precisely to your needs.

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• High-precision stamped parts

  

  Quality and Diversity for the Highest Demands

  As part of our comprehensive product and technology portfolio, Diehl Metal Applications manufactures high-precision stamped parts for the automotive, electrical, and industrial sectors. With our state-of-the-art stamping lines, innovative tool technologies, and custom solutions, we deliver the highest quality stamped parts - from prototypes to large-scale production. Our precision stamped parts are used in numerous key products, including press-fit zone contacts, contact pins, cell connectors, and metal-plastic hybrid parts. These parts offer reliability, efficiency, and cost-effectiveness. 

  For optimal further processing, we also offer tape and reel packaging.

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• Cell contact systems (low voltage)

  

  MODULAR LOW-VOLTAGE BATTERY SYSTEMS

  Explore Diehl Metal Applications' powerful low-voltage battery systems designed for mobile and industrial use. Our modular battery packs combine mechanical stability, electrical functionality, and high integration into one component. Customizable components, such as battery holders, charging connectors, and subsystems for drive units, offer maximum flexibility for e-bikes, drones, power tools, and autonomous logistics systems. Our systems are scalable, space-saving, and automation-friendly, making them ideal for versatile mobility solutions.

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• Cell contact systems (high voltage)

  

  Precision, modularity, and efficiency – our cell contact systems connect battery cells reliably and flexibly. We offer a range of concepts that can be tailored to individual customer requirements, from traditional wiring harness solutions to innovative wire-laying technology. From prototype to series production, we provide scalable solutions for electric, hybrid, and fuel cell vehicles – all from a single source.

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Manufacturing

• High-precision stamping

  

  High-Tech for Customized Metal Solutions

  With over 50 cutting-edge stamping lines, Diehl Metal Applications is one of Europe's leading providers of precision stamping technology. Our technologies enable the cost-effective production of complex stamped parts with maximum precision, from prototypes to large-scale production.

  Thanks to our in-house toolmaking and continuous process monitoring, as well as our many years of experience, we deliver precision-stamped parts of consistently high quality for use in the automotive, electrical, and industrial sectors. For automated further processing, we also offer tape & reel as a reliable packaging solution.

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• Surface coating of strips & individual parts

  

  High-Quality Surfaces for the Most Demanding Requirements 

  Diehl Metal Applications has extensive expertise in developing technically and economically optimal coating technologies for a wide range of applications. Using state-of-the-art strip electroplating systems, we apply metals to ensure components have decisive advantages such as wear resistance, solderability, corrosion resistance, and conductivity.

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• Overmolding & Assembling

  

  Precise Composite Solutions for Complex Components

  Diehl Metal Applications uses state-of-the-art overmolding and assembly technology to combine metal and plastic components, creating high-precision hybrid parts. Our processes efficiently integrate metal components into injection-molded parts for both reel-to-reel and single-part production.

  The result is a single component with functional integration, weight reduction, and process advantages—ideal for demanding applications in the automotive and electronics industries.

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Development & Engineering

• Tool- & mouldmaking

  

  Precision from Our Own Hands

  Since 1959, Diehl Metal Applications has been developing and manufacturing high-precision punching, cutting, and bending tools at its own toolmaking centers in Teltow (Germany) and Besançon (France). We specialize in module technology and the assembly of complex precision tools. Thanks to the use of carbide, our tools boast particularly long service lives, high productivity, and reliable processes.

  More information about Toolmaking at Diehl Metall

• Integrated value chain

  

  At Diehl Metal Applications, we develop and manufacture along the entire value chain.

  • Support in selecting intelligent material combinations
  • Highly integrated manufacturing processes for copper alloy production
  • State-of-the-art stamping techniques and surface technologies
  • Overmoulding and assembly technology

  Our in-house metal management enables us to optimally match the base material and surface coating. Our customers and partners can choose whether to use partial solutions and provide the material themselves, or hand over the entire process to us.

  More information about integrated value chain at Diehl Metall

• Quality Management

  

  Precision without compromise

  At Diehl Metal Applications, quality is our top priority. In line with our zero-defect philosophy, we consistently test all products for maximum precision and reliability. Our quality control process covers every stage of the value chain, combining state-of-the-art testing methods with seamless monitoring of processes.

  More information about Quality at Diehl Metall

• Product and process development

  

  Precision from concept to series production

  We combine state-of-the-art injection moulding and overmoulding simulation with practical manufacturing expertise. By conducting precise filling studies and warpage and shrinkage analyses, as well as optimising tool design, cooling and process parameters, we can identify potential sources of error at an early stage and ensure efficient, stable production. Live data monitoring, process verification and reverse engineering guarantee the highest quality and traceability, from prototype to series production.

• Precision & high-speed stamping

  • Diehl Metal Applications (Teltow)

  • Diehl Advanced Mobility (Zehdenick)

  • Diehl Augé Découpage (Besançon)

  • Diehl Electronic Components (Wuxi)

• Coating / Electroplating

  • Diehl Metal Applications (Berlin)
  • Diehl Power Electronic (Siaugues)
  • Diehl Electronic Components (Wuxi) in partnership
• Metal-plastic composite systems

  • Diehl Metal Applications (Teltow)
  • Diehl Advanced Mobility (Zehdenick)
  • Diehl Augé Découpage (Besançon)
• Sales offices & production sites

  • Diehl Metal Applications (Berlin/Teltow)
  • Diehl Advanced Mobility (Zehdenick)
  • Diehl Power Electronic (Siaugues)
  • Diehl Augé Découpage (Besançon)
  • Diehl Electronic Components (Wuxi)

• 2025 Bosch Global Supplier Award 2025 – Recognition for Outstanding Crisis Management

  

  In November 2025, DMA received the Bosch Global Supplier Award. The strategic business unit impressed with outstanding crisis management and cross-site collaboration following the fire in the electroplating facility in 2024. Thanks to proactive coordination and strong team spirit, supply continuity for Bosch was maintained without major interruptions. The award recognizes DMA’s strong cohesion, leadership, and high level of professionalism – a testament to Diehl Metall’s reliability as a global partner to the automotive industry.

• 2024 Investment into four new State-of-the-Art Reel to Reel Plating lines

  

  Following the 2024 fire, DMA built 4 new, highly modern Reel-to-Reel electroplating lines. With those lines DMA operates over 30 Reel-to-Reel Plating lines in two locations and 3 full automated Barrel Plating lines, making DMA to one of the largest electroplating suppliers in Europe. The advanced technology used ensure highest product quality while enhancing efficiency and flexibility in production.

• 2022 New E-Mobility Production Center in Zehdenick

  

  On October 7, 2022, Diehl Advanced Mobility opened a new 7,500 m² production and logistics hall in Zehdenick, capable of manufacturing up to three million cell contact systems per year for electric vehicles. Equipped with state-of-the-art production technology and a 6,000 m² photovoltaic roof, the facility combines efficiency and sustainability. This expansion reinforces Diehl’s position as a competence center for modern e-mobility and highlights the Berlin-Brandenburg region as a hub for innovative mobility technologies.

• 2021 Expansion of global presence with Diehl Electronic Components in China

  

  On February 8, 2021, Diehl Metal Applications announced the launch of Diehl Electronic Components (DEC) in Wuxi, China. As a sales office and warehouse, the new company strengthens the presence in the Chinese and Asian markets and supports local and global partners with high-quality products, competitive prices, and excellent service.

  With this move into China, Diehl Metal Applications is consistently pursuing its strategy of moving closer to its customers and expanding its local footprint. In the medium term, DEC aims to cover the entire value chain directly on site – in accordance with international standards and German production guidelines: technologically leading, durable, and of the highest quality.

• 2019 ZIMK Becomes Diehl Advanced Mobility

  

  On July 5, 2019, ZIMK Zehdenick Innovative Metal and Plastic Technology GmbH was renamed Diehl Advanced Mobility GmbH. The Zehdenick site remains and is being further developed as a competence center for e-mobility. The renaming marks a strategic step for the Diehl Group, strengthening its position as a technology leader in electric mobility. For years, the company has been a key development partner for the automotive industry, producing high-performance cell contact systems (CCS) for hybrid and electric vehicles. With an annual output of up to 1.5 million units and multi-million euro investments, Diehl Advanced Mobility is a strong partner in the transition from combustion engines to electric drivetrains.

• 2014-2015 Mile stones at Diehl Metall

  

  In 2014, the number of contact parts produced with Schempp+Decker press-fit zones exceeded 2 billion for the first time. 

  In 2015, Diehl Metal Applications and Diehl Augé Découpage were awarded the coveted Preferred Supplier status by their customer Bosch.

• 2014 Continuous expansion of the product portfolio

  

  In 2014, Diehl Metal Applications developed alternative surfaces to meet the increased demand for lead-free surfaces in press-fit contacts. One year later, the company added the new SKEDD contact technology to its product portfolio. SKEDD is a simple and reliable addition to soldering and press-fit technology and stands for direct contacting of printed circuit board connections.

• 2010-2012 Diehl Metal Applications starts work

  

  In 2010, six companies in Germany and France were merged into Diehl Metal Applications GmbH within the Diehl Metall subgroup. These include Sundwiger Messingwerk, Diehl Metall (Shenzhen), OTB Oberflächentechnik in Berlin, Diehl Augé Decoupage, Diehl Power Electronic, and Zehdenick Innovative Metall- und Kunststofftechnik (ZIMK), which was acquired in the same year.

  In 2012, Schempp & Decker in Berlin was added to the group. With this step, Diehl Metall created a fully integrated value chain across all locations, covering strip production, surface finishing, stamping and forming, and plastic overmolding.

• 2006 Expansion of global activities

  

  In 2006, Diehl Metall expanded its technology portfolio to include coating technology. To this end, the company acquired Berlin-based OTB Oberflächentechnik and also founded Diehl Power Electronic in France. One year later, the French company Augé Découpagé—now Diehl Augé Découpage—is integrated into the Diehl Metall division. This enables Diehl Metall to offer sophisticated precision stamped strips.

• 2004 Major investments at Diehl Metall

  

  In 2004, a major investment in the expansion of the Sundwig strip rolling mill led to the further expansion of the continuous strip casting facilities. This further consolidated the company's position as the world's largest manufacturer of cast copper alloy strips for the semiconductor and connector industry.

  With the acquisition of ZIMK Zehdenick Innovative Metall- und Kunststofftechnik GmbH, the company becomes part of the Diehl family and adds expertise in toolmaking, stamping, and plastics technology to its portfolio.

• 2002 The euro is coming – also from Diehl

  

  Starting in 2002, it is to be introduced simultaneously in Germany and initially ten other countries – the euro. An impressive 70 billion coins weighing around 250,000 tons are planned for initial demand. Sundwiger Messingwerk and Griset are supplying part of the raw material for the new currency.

• 2000-2001 Restructuring and the turn of the millennium

  

  The social structure of the group, which has grown over decades, is being adapted to the decentralized management structure of the company. In the future, Diehl will consist of four subgroups: Metal, Controls, Devices, and VA Systems. The Devices subgroup will be integrated into Diehl VA Systems in 2001.

  As part of the restructuring, Röthenbach will become the headquarters of the Diehl Metal subgroup.

• 1995 New development of environmentally friendly contact wires

  

  In 1995, Sunwiger Messingwerk developed cadmium-free and therefore environmentally friendly wires. These are used by Deutsche Bahn as contact wires and contribute to railway electrification. In 1998, Sundwiger Messingwerk celebrated its 300th anniversary.

• 1980 Construction of a new strip rolling mill

  

  A lack of expansion opportunities on the premises of Plant 1 necessitates the establishment of a new casting and pressing plant (Plant 3) with a drop forge in Röthenbach, just outside Nuremberg. In 1938, a 3,500-ton press goes into operation here, at that time the largest of its kind in Germany.

• 1958 Acquisition of the Sundwig brassworks

  

  The production of semi-finished products remained Diehl's core business in the 1950s. In order to be able to offer its customers not only rods, tubes, and forgings, but also wires and strips from a single source, Diehl acquired the Sundwig brass works in 1958.

   

• 1914-1917 Growth and upheaval during the First World War

  

  The outbreak of World War I prompted Diehl to switch from producing handcrafted consumer goods to casting brass rods. These were then pressed into raw parts for ammunition production in the company's own drop forge.

  Industrial production began in 1917 with the construction of a metalworks (Plant 1) at the Nordostbahnhof railway station in Nuremberg. Diehl thus positioned itself as a Franconian manufacturer of semi-finished products.

• 1902 It starts with a small art foundry

  After completing his apprenticeship and traveling, he ended up in Nuremberg, which was increasingly developing into a center for the metalworking industry. With his craftsmanship, innovative spirit, and entrepreneurial skills, Heinrich Diehl founded his own “arts and crafts model workshop” in Schweiggerstraße in Nuremberg in 1902. The small art foundry initially focused on producing models for stoves, art and architectural castings, and epitaphs (grave slabs).

• 1900 Founding years

  

  Diehl's story starts in the 19th century—a time of change. Industrialization totally changed how people lived. Young Heinrich Diehl, a farmer's son, was also fascinated by the possibilities that metal offered. He decided to start an apprenticeship in metalworking—and took the first step toward building a company. 

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