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Balancing weights made of tungsten alloys

Balancing weights made from the tungsten heavy metal composite Densimet® compensate for oscillations, weight transfers, imbalances and vibrations, create or shift centers of gravity and more generally ensure the optimum balance.

Massive weight in a tiny space

Thanks to their high densities of up to 18.89 g/cm3, Densimet® tungsten heavy metal alloys offer outstanding performance wherever a lot of weight has to be packed into tiny spaces.

The tungsten heavy metal composite materials are used as balancing weights on crankshafts or in balance shafts in formula 1 racing cars or large diesel engines. In addition, due to their high density, high modulus of elasticity and optimized ease of mechanical processing, these tungsten heavy metal alloys are ideally suited for use as damper and absorber components in the drive train. In the aviation and aerospace industries, the tungsten composite material Densimet® provides outstanding performance, for example, in propeller and helicopter blades, rudders, radar equipment and avionics systems.

Balancing weights are crucial components in many different applications. They help reduce the loads that parts are exposed to and consequently increase their service life. Here are a few examples:

  • Aviation and aerospace: propeller and helicopter blades
  • Automotive industry: crankshaft counterweights and chassis weights
  • Watch industry: bobs on watch rotors
  • Sports equipment: golf clubs
  • Optical industry: microscopes and measuring instrument
  • Oil and gas drilling: down hole logging tools

High elasticity. Precision forming and machining

Because pure tungsten is very brittle, nickel and iron are added to the composite materials and the molten material is applied in a liquid-phase sintering process. The nickel-iron phase binds the tungsten grains and consequently guarantees high ductility. The advantage: The material offers optimized mechanical processing capabilities and is also able to withstand high loads. Both easily processed and offering high densities, these balancing weights are ideally suited for applications in the watch industry. With their complex geometries, these weights are also used to balance microscopes and high-precision optical instruments as well as for other products in the semiconductor industry.


Image provided by the courtesy of Plansee.