PLANSEE Composite Materials.

PLANSEE Composite Materials

PLANSEE Composite Materials is our competence center for tungsten heavy metals as well as metallic and ceramic composite materials.


The site manufactures a number of exceptional products from our tungsten heavy metal alloys DENSIMET® and INERMET®, tungsten-copper and many other metallic and ceramic composites, for example based on titanium and aluminum.

Top quality from a single source.

We handle every stage in the manufacture and processing of our composite materials in-house. From the raw materials through to the finished product: including research and development. To do this, we call on our whole range of technological skills and guarantee that you benefit from the very best quality.  


At a very early stage, during the careful mixing of our special metal powders, we lay the foundations for our unbeatable products. Depending on the product requirements, we compact the powder to produce formed parts using a variety of processes such as die pressing with mechanical or hydraulic forces. Using cold isostatic pressing techniques, we produce green compacts for semi-finished blanks. Our hot pressing processes enable us to produce dense, binder-free semi-finished products in a single-stage manufacturing procedure. These are then subjected to a sintering or liquid-phase sintering process to achieve the optimum product density. Some of the composites produced at PLANSEE Composite Materials are the result of special processes such as infiltration or back-casting.

Liquid phase sintering
Liquid phase-sintered composites are manufactured from the mixture of metal powders in a single-stage production process during which the components with lower melting points are fused onto those with higher melting points. During the binder phase, these components form alloys with those that have a higher melting point. Even a large amount of the tungsten, which has a high melting point, is dissolved during the binder phase. PLANSEE's liquid phase sintered composite materials benefit from the tungsten component's density, modulus of elasticity and ability to absorb X-ray and gamma radiation without suffering from any of the drawbacks associated with the processing of pure tungsten In contrast, the coefficient of thermal expansion and the thermal and electrical conductivity of the liquid phase-sintered components depend to a very great extent on the composition involved in the binder phase.
Infiltrated metal composites consist of two material components. During a two-stage manufacturing process, a porous sintered base is first produced from the component with the higher melting point, for example a refractory metal, before the open pores are then infiltrated with the liquefied component with the lower melting point. The properties of the individual components remain unchanged. When inspected under the microscope, the properties of each of the components continue to be evident. At the macroscopic level, however, the properties of the individual components are combined. For example, the new material may contain modified thermal conductivity and thermal expansion values.
Back-cast materials simultaneously combine the material properties of two different material components. During this process, the materials themselves are retained in their original state and are bound only at a thin junction. The metals are fused in a mould to form a bond of only a few micrometres in size. Unlike welding and soldering techniques, this method is particularly stable and ensures optimum thermal conduction.
And wherever customer service is concerned, PLANSEE Composite Materials is once again the first port of call: We bond our sputtering targets to backplates to make them easier to handle. Thanks to our many years of experience, high-precision machining technologies such as the lathing, milling, drilling, grinding, wire or water jet cutting of heavy metals and other tungsten alloys are no problem for us.


Our experts...

We have developed a wide range of tungsten heavy metals as well as metallic and ceramic composite materials with exceptional combinations of properties and, in particular, we have optimized the following characteristics:


  • Density

  • Mechanical strength

  • Shielding against X-ray and gamma radiation
  • Thermal conductivity and thermal expansion
  • Electrical conductivity
  • Corrosion resistance
  • Temperature resistance


Our tungsten heavy metal alloys DENSIMET® and INERMET® have a particularly high density (17.00 to 18.8 g/cm3) and reliably protect against X-ray and gamma radiation. The addition of nickel and iron or nickel and copper makes the alloys significantly easier to work than pure metal. DENSIMET® is used, among other things, collimators in radiation therapy equipment, while, due to its non-magnetic behaviour, our INERMET® is used for shielding panels and in balancing weights.


Tungsten copper, for example, combines the high melting point of tungsten with the high electrical and thermal conductivity of copper and is used, among other things, in switch contacts in the power engineering sector.


... for very special products

Working in close collaboration with our customers, we turn ideas in the fields of medical technology, hard material coatings, the foundry industry and the automotive sector into realities. 

Products manufactured by PLANSEE Composite Materials


An example? When a tungsten heavy metal giant weighing two tonnes has to be machined with the precision of a Swiss watchmaker then that is just the sort of challenge that PLANSEE Composite Materials relishes. The result: A collimator helmet for a particularly benign method of treating tumours. More than 576 high-precision drill holes lead to exactly the same focal point. In this way, the radiation falls directly on the diseased area and the healthy tissue is securely protected. 50 000 patients are treated every year using this particularly unaggressive method and are speeded towards a faster recovery.


With its enthusiasm and commitment, modern production processes and great experience, PLANSEE Composite Materials develops other, very special products:  


Do you also have a challenge for us?

You can rely on the engineering expertise and innovative approach of PLANSEE Composite Materials. Working in close cooperation with our customers, our production site develops products that meet the very highest requirements. Our many years of experience and state-of-the-art production methods are among our invaluable assets.


Training & Careers.

So you really want to make a difference? Then do it! At PLANSEE Composite Materials. We are big enough to be in powder metallurgy's top division and small enough for every individual employee to make a real contribution. For those entering the professional world for the first time, PLANSEE Composite Materials also offers training positions for machinists.


Find out more about our site as a potential employer and take a look at our current job offers.

Fact Box
Founded: 1989
Certification: ISO 9001, Authorized known Consignor according to VO (EG) 300/2008



PLANSEE Composite Materials is the acknowledged expert for sputtering targets for hard material coatings. Together with the production site PLANSEE Tungsten Alloys in France, this site forms our competence centre for tungsten heavy metal alloys.


PLANSEE Composite Materials GmbH
Siebenbürgerstraße 23, 86983 Lechbruck am See, Deutschland
Tel.: +49 8862 773-0


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