Tungsten

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High Performance Alloys
Tungsten
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Pure Tungsten

• As a high performance materials, Pure Tungsten
  has high melting temperature, high density, low
  vapor pressure, low thermal expansion combined
  with good thermal conductivity, sufficient
  electrical resistance, high modulus of
  elasticity. Tungsten sheets and disk are
  available with alkali washed or ground finish. 
  Depending on thickness, sizes are up to 450 x
  1000 mm.  Thickness are from 0.1 to 15 mm.

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Applications

• Furnace parts, Semiconductor Base Plates,
  Components for Electron Tubes, Emission Cathodes
  for Electron Beam Evaporation, Cathodes and
  Anodes for Ion Implantation, Tubes / Boats for
  Sintering of Capacitors, Targets for X-ray
  Diagnostics, Crucibles, Heating Elements, X-ray
  Radiation Shielding, Sputtering Targets,
  Electrodes.

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Bar and rod stock are available with ground
surfaces and as sintered or swaged condition. 
Diameters range from 1 to 30 mm and up to 2000 mm
long depending on size and conditioning.  Large
ranges of custom crucibles and single crystal
ingots are offered.
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Tungsten product specifications
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As high performance materials, Tungsten-Copper
and Molybdenum-Copper are characterized by high
thermal conductivity, low thermal expansion and
high wear resistance combined with excellent
electrical conductivity.
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Description of
Tungsten-Copper Alloys  

•       
• These composites are made by infiltrating porous
  tungsten or molybdenum with molten copper in a
  vacuum. Thus providing a direct copper path for
  heat or electrical conductivity.

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Tungsten-Copper for Electrical Application

•         Alloys and Properties  High Voltage Arc
  Contacts, Vacuum Contacts, Electrodes for
  Resistant Welding and Spark Erosion, Leaders for
  Steel Rolling, Dies for Casting, Balance Weights,
  Rocket Parts.

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Tungsten-Copper for Electric Application

• Tungsten-Copper high performance composites for
  electrical applications are made from carefully
  controlled porous tungsten that is vacuum
  infiltrated with molten copper. This provides a
  superior electrical contact material that
  combines the refractory, long lasting wear
  resistant properties of tungsten with the high
  thermal and electrical conductivity of copper.

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Heat Sink Applications 

•          Heat Sinks and Spreaders,
  Microwave Carriers, Hermetic Package Bases and
  Housings, Ceramic Substrate Carriers, GaAs and
  Silicon Device Mounts, Laser Diode
  Mounts.         
• Tungsten-Copper for Heat Sinks

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Why we comment and present MIM Processing?
MIM Processing

• MIM is a fast growing manufacturing method that
  bridges the manufacturing gap that other metal
  working technologies and shaping processes cannot
  be fulfilled because of technology or cost. MIM
  can be a very cost effective method for producing
  large quantities of precision parts.MIM
  AdvantagesHigh Shape Complexity MIM process
  can produce more complex parts than either
  investment casting or traditional press and
  sinter techniques.Low Cost Machining
  operations can be eliminated.

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• Tight Tolerances Dimensions of parts produced
  with our feedstock can be held to /-
  0.0010.002" per inch.High Density MIM parts
  produced with our feedstock will have density
  levels between 97.5-99.5. These l levels
  typically exceed traditional press and sinter
  techniques.High Performance The tensile
  strengths, elongations and hardness are superior
  to traditional press and sinter techniques, and
  comparable to investment casting or machine
  components.

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MIM Typical Tungsten Materials
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Tungsten Product Applications

• Nuclear and medical radiation shielding for x-ray
  
• Shields for radiation therapy and industrial
  applications
• Aircraft and helicopter rotor balance weights
• Instrument balance weight
• Weights for sport equipment

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Thank you!