What Is Fine Tungsten Powder?

The high quality and high purity fine tungsten powder are typically greater than 99.95% tungsten purity with average particle sizes up to 10 microns. These powders are used in powder metallurgy applications such as electrical contacts, heavy metal alloys, electronic heat sinks, mining tools and fabricated tungsten rod/bar.
Typical Physical Properties
Type AVG. Particle Size FSSS (microns) Apparent Density
(g/in3) Standard Screening
C3 0.60-0.99 20 - 40 -100 Mesh
C5 1.00-1.39 25 - 50 -100 Mesh
C6 1.40-1.99 30 - 60 -100 Mesh
C8 2.00-3.99 35 - 70 -200 Mesh
C10 4.00-5.99 40 - 80 -200 Mesh
C20 6.00-9.99 50 - 90 -200 Mesh

Typical Trace Element Chemical Analysis
Metallic Impurities (WT%)
Element  Max  Typical  Element  Max Typical
Al 0.003 <0.001 Mo 0.020 0.005
Co 0.005 <0.001 Na 0.010 0.005
Cr 0.020 0.005 Ni 0.020 0.005
Cu 0.005 <0.001 Si 0.002 <0.001
Fe 0.020 0.002 Sn 0.002 <0.001
Non-Metallic Impurity (WT%)
Type Carbon Oxygen(Loss on Reduction)
C40 <0.008 <0.070
C60 <0.008 <0.070
C80 <0.008 <0.070
TUNGSTEN (WT%) > 99.8% Excluding Gases

Analytical Report
A Certificate of Analysis (COA) accompanies each shipment of tungsten carbide powder. We prepare each COA to include the following:
Average Particle Size (Fisher Sub-Sieve ASTM B-330)
Apparent Density (Scott Volumeter ASTM B-329) ]
Particle Size Distribution (Photelometer ASTM B-430, Sedigraph, or Malvern Mastersizer)
Chemical Impurity Analysis


 

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