A.L.M.T. Corp.

New Product Information

Uniform tungsten powder

Using our unique technology, we succeeded in developing tungsten powder with more uniform grain than conventional products. Beyond improved handling performance by low volume, we were able to form a uniform powder layer. In particular, control of layer thickness and control of shrinkage during sintering are 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 is the average grain diameter by the Fischer method.
W (%) is the remainder obtained by subtracting F.C, Fe, Mo and NVR from 100.
*NVR:Nonvolatile content

Grain size distribution of uniform tungsten powder

Grain size distribution of uniform tungsten powder

Low volume tungsten carbide powder

We manufacture much lower volume tungsten carbide powder compared with conventional one.
We can also lower alloy shrinkage, and raise productivity according to various applications.
(image is WC08LV)

Low volume tungsten carbide powder

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Type Grain size(μm) TC(%) FC(%) Fe(%) Mo(%) Additive
WC06LV 0.50 to 0.69 6.15±0.05 ≦0.10 ≦0.02 ≦0.02
WC08LV 0.70 to 0.89 6.15±0.05 ≦0.10 ≦0.02 ≦0.02
WC10LV 0.90 to 1.10 6.15±0.05 ≦0.10 ≦0.02 ≦0.02
WCR05LV 0.45 to 0.54 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 Grain growth inhibitor
WCR06LV 0.55 to 0.64 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 Grain growth inhibitor
WCR07LV 0.65 to 0.85 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 Grain growth inhibitor

Grain size is the average grain diameter by the Fischer method.
* indicates the converted grain diameter by the BET method.
TC:Total Carbon
FC:Free Carbon

Expected effects
  1. Low shrinkage during the press body sintering (Common utilization of WC in different grain size range and molds)
  2. Reduced molding pressure (Suppressed crack of press body in complex shape)
  3. Upsized sintered body
  4. Increased powder throughput per batch (Improved productivity in mixing process)
  5. Reduced mixing time by reduced aggregation (same as above)

Sintered body size can be increased. Comparison with 0.8 µm tungsten carbide powder

Sintered body size can be increased. Comparison with 0.8 µm tungsten carbide powder

Reduced molding pressure

Reduced molding pressure