Ammonium Metatungstate(AMT)
Tungsten Trioxide(YTO)
Blue Tungsten Oxide(BTO)
Tungsten Metal Powder
Tungsten Carbide Powder 1
Tungsten Carbide Powder 2
Tungsten Rod
Tungsten Wire
Ammonium Paratungstate(APT)
W-base High Density Alloy
 
Tungsten Rod

Type & Application

Type

Application

HW91,HW71,HW61

for making filament,cathodes,

setting rod at H.t.,Electrode etc.

HW31,HW42,Hw11

for making lead,support,

typing needle.
Diameter Range

Classification

Dia.(mm min)

Dia.(mm max)

Black Wrod

Swaged

3.0

13.5

Straightened

0.5

3.0

Ground Wrod

1.0

13.5
Chemical composition

Impurities (% max)

W Content (%min)

99.95
Element Max
Fe 0.0020
Mo 0.0030
Others(excl.K) 0.0010

Diameter Tolerance

  Black W rod Ground W rod  

Diameter

(mm)

Diameter

tolerance(%)

Roundness

(%)

Diameter

tolerance(mm)

Roundness

(mm)

Length

tolerance(mm)
0.5<d ≤ 0.8 +2 2 - - L≤ 50 +0.5
0.8<d ≤ 3.0 +2 2 +0.03 0.03 50<L ≤ 100 +1.0
3.0<d ≤ 6.5 +2 2 +0.05 0.05 100<L ≤ 300 +1.5
6.5<d ≤ 13.5 +2

2

+0.08

0.08

300<L ≤ 500 +2.0

500<L ≤ 1000 +2.5

1000<L ≤ 2000 +5

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