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High Density Tungsten Powder

Types SR and ST tungsten powders manufactured by Buffalo Tungsten are the highest apparent density tungsten powder available. These powders are ideal for weight filler material and radiation shielding applications.

TYPICAL PHYSICAL PROPERTIES

TYPE

AVG. PARTICLE SIZE FSSS (um)

APPARENT DENSITY (g/in3)

TAP DENSITY (g/cc)

STANDARD SCREENING

SR

8.0 - 18.9

130 - 165

10.0 - 12.0

-100 Mesh

ST

19 - 40.0

130 - 165

10.0 - 12.0

-60 Mesh

TYPICAL TRACE ELEMENT CHEMICAL ANALYSIS

METALLIC IMPURITIES (WT %)

Element

Max

Typical

Element

Max

Typical

Al

0.003

<0.001

Mo

0.010

0.002

Co

0.005

<0.001

Na

0.010

0.002

Cr

0.020

0.008

Ni

0.020

0.008

Cu

0.002

<0.001

Si

0.005

<0.001

Fe

0.020

0.008

Sn

0.001

<0.001

NON-METALLIC MAXIMUM IMPURITIES (WT %)

Carbon

<0.010

Oxygen (Loss on Reduction)

<0.350

W (WT %) > 99.8 Excluding Gases

ANALYTICAL REPORTS
A Certificate of Analysis (COA) accompanies each shipment of tungsten carbide powder. BTI’s own Powder Metallurgy QC Laboratory prepares 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
PACKAGING
Available in 500 lb/250 kg drums or 50-100 lb/25-50 kg pails

NOTES

  • All powders are commercially uniform in purity.
  • Higher apparent densities available as per customer request.
  • Also available mesh sizes for screening are 270 & 325 mesh as per customer request.
Copyright 2011 Buffalo Tungsten Inc.