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Fine Tungsten Powder

The high quality and high purity fine tungsten powders produced at Buffalo Tungsten 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 DENSITY1 (g/in3)

STANDARD SCREENING2

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

0.010

0.002

Co

0.002

<0.001

Na

0.003

<0.001

Cr

0.005

0.001

Ni

0.005

0.002

Cu

0.002

<0.001

Si

0.001

<0.001

Fe

0.005

0.001

Sn

0.001

<0.001

NON-METALLIC IMPURITIES (WT%)

Type

Carbon

Oxygen (Loss on Reduction)

C3

<0.010

<0.350

C5

<0.008

<0.200

C6

<0.005

<0.120

C8

<0.004

<0.080

C10 <0.004 <0.070
C20 <0.004 <0.070

TUNGSTEN (WT%) > 99.9% 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.