A.L.M.T. Corp.

Tungsten powder

Tungsten powder

Tungsten powder is manufactured under strict quality control as raw materials for high specific gravity material, diamond tools, electrode materials for metallizing and sputtering targets for LSI, sintered parts, raw materials of weight. We will respond to powder requests of grain-size.

タングステン粉

Tungsten powder

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Type Grain size(μm) W(%) O(%) Fe(%) Mo(%) NVR(%)
A20 0.5 to 0.6 ≧99.9 ≦0.60 ≦0.02 ≦0.02 ≦0.01
A30 0.6 to 0.8 ≧99.9 ≦0.60 ≦0.02 ≦0.02 ≦0.01
B10 1.0 to 1.3 ≧99.9 ≦0.40 ≦0.02 ≦0.02 ≦0.01
B20 1.0 to 1.5 ≧99.9 ≦0.20 ≦0.02 ≦0.02 ≦0.01
B30 1.4 to 1.7 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C10 1.7 to 2.0 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C20 1.9 to 2.2 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C30 2.1 to 2.5 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C40 2.3 to 2.8 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C50 2.8 to 3.4 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
C60 3.1 to 3.6 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
D10 3.6 to 4.4 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
D20 4.5 to 7.5 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
D100 7.6 to 12.0 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
D150 12.1 to 17.0 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
Coarse grain 23 to 28 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01

Grain size is the average grain diameter by the Fischer method. NVR is the remainder after heating in hydrogen chloride stream.
W is the remainder obtained by subtracting Fe, Mo and NVR from 100.
*NVR: Nonvolatile content

Uniform tungsten powder

Using our unique technology, we succeeded in developing tungsten powder with more uniform grains than conventional products. Beyond improved handling performance by low bulking, we were able to form a uniform tungsten powder layer. In particular, thinner metals in the metalizing field and warp reduction after firing is expected.

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Type Grain size(μm) W(%) O(%) Fe(%) Mo(%) NVR(%)
W-U010 0.9 to 1.4 ≧99.9 ≦0.20 ≦0.02 ≦0.02 ≦0.01
W-U020 1.5 to 2.4 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
W-U030 2.5 to 3.4 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
W-U040 3.5 to 4.4 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
W-U050 4.5 to 5.4 ≧99.9 ≦0.15 ≦0.02 ≦0.02 ≦0.01
W-U100 8.0 to 12.0 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
W-U150 13.0 to 17.0 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
W-U200 18 to 22 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01
W-U250 23 to 28 ≧99.9 ≦0.10 ≦0.02 ≦0.02 ≦0.01

Grain size distribution of uniform grain tungsten powder

Grain size distribution of uniform grain tungsten powder

High purity tungsten powder

With outstanding purification technology and strict environmental management, we manufacture high purity tungsten powder with extremely few radioactive elements and alkali metals.

4N-W

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Type W(%) Na(ppm) K(ppm)
4N-W ≧99.99 ≦10 ≦10
Analysis example ≧99.99 5 3

* Grain size ranges form 1.0 to 5.0 μm to meet your request.

5N-W

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Type W(%) Na(ppm) K(ppm) U(ppb) Th(ppb)
5N-W ≧99.999 ≦1 ≦1 ≦1 ≦1
Analysis example ≧99.999 0.08 0.04 0.2 0.5

* Grain size ranges from 1.0 μm to 5.0 μm to meet your requests.