High-purity Products

Japan New Metals produces high-qualty, high-purity tungsten with over 99.999 percent (5N) through complete quality control management, which has lower electrcal resistivity with thermal and chemical stable properties.


clean room


air shower booth


the manufacturing floor


Sputtering target material for wiring, electrodes in semiconductor.

High Purity Tungsten Powder

Mark Particle Size(μm) Chemical Composition
% ppm
O Mo C Ca Cr Fe P Si
W-4N 1.00~5.00 ≧99.99 ≦0.30 ≦10 ≦30 ≦10 ≦10 ≦10 ≦10 ≦10
W-5N 1.00~5.00 ≧99.999 ≦0.30 ≦10 ≦30 ≦1 ≦1 ≦1 ≦1 ≦1
The ingredient guarantee of W-4N Al,As,Co,Cu,K,Mg,Mn,Na,Ni,Ti: 5ppm or less of each
The ingredient guarantee of W-5N Al,As,Co,Cu,Mg,Mn,Ni,Ti: 1ppm or less of each,Na,K:0.5 ppm or less of each

SEM image

High Purity Tungsten trioxide Powder

Mark ppm
C Ca Cr Fe Mo P Si
WO3-4N ≦10 ≦10 ≦10 ≦10 ≦10 ≦10 ≦10


  • (*1)Particle size : Sub Sieve Sizer
  • (*2)Tungsten Powder is a restricted item by Japan's export control regulation.
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