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Crystalline Tungsten Powder

Of the highest quality and purity, the specially prepared crystalline tungsten powders produced at Buffalo Tungsten are large particle size tungsten powders beyond the range of the Fisher Sub-Sieve Sizer and are therefore classified by mesh size. The Crystalline Tungsten Powders have applications such as matrix and spray powders.

TYPICAL PHYSICAL PROPERTIES

TYPE

DESCRIPTION

APPARENT DENSITY1(g/in3)

MESH ANALYSIS

Mesh

WT%

C100

-325

110 - 140

+325

-325

0 - 10

>90

C110

-200/+325

105 - 135

+200

-325

0 - 10

0 -15

C120

-60/+325

95 - 125

+60

-325

0 - 10

0 - 15

CUSTOMER SPECIFIC MESH RANGES AVAILABLE

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

0.002

Cr

0.020

0.008

Ni

0.020

0.008

Cu

0.005

<0.001

Si

0.002

<0.001

Fe

0.020

0.004

Sn

0.002

<0.001

NON-METALLIC IMPURITIES (WT%)

Carbon

<0.008

Oxygen (Loss on Reduction)

<0.070

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.