A.L.M.T. Corp.

Tungsten carbide powder

Tungsten carbide powder

We manufacture tungsten carbide powder used for cemented carbide, cermet, diamond tools, electric contact etc. under strict quality control. (Image is WC12.)

Tungsten carbide powder

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Type Grain size(μm) WC(%) TC(%) FC(%) Fe(%) Mo(%) NVR(%)
WC08 0.7 to 0.9 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC10 0.9 to 1.1 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC12 1.1 to 1.3 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC15 1.3 to 1.8 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC20 1.8 to 2.2 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC25 2.2 to 2.8 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC30 2.8 to 3.3 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC35 3.3 to 3.8 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC40 3.7 to 4.4 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC45 4.2 to 5.0 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01
WC60 5.0 to 7.1 ≧99.8 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 ≦0.01

Grain size is the average grain diameter by the Fischer method. For T.C, we respond to your requests beyond those listed above. WC is the remainder obtained by subtracting F.C, Fe, Mo and NVR from 100.
*TC:Total Carbon
*FC:Free Carbon
*NVR:Nonvolatile content

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.

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
Expected effects
  1. Low shrinkage during 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 shapes)
  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 0.8µm tungsten carbide powder

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

Reduced molding pressure

Reduced molding pressure

Fine and uniform tungsten carbide powder (with grain growth inhibitor)

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Type Grain size (μm) TC(%) FC(% Fe(%) Mo(%) Cr(%)
WCR05P 0.45 to 0.54 6.15±0.05 ≦0.10 ≦0.05 ≦0.02 0.80~0.90
WCR06P 0.55 to 0.65 6.15±0.05 ≦0.05 ≦0.05 ≦0.02 0.80~0.90
WCR07P 0.66 to 0.80 6.13±0.05 ≦0.10 ≦0.05 ≦0.02 0.80~0.90

Uniform tungsten carbide powder for impact resistant tools

We manufacture a uniform grain tungsten carbide powder with narrow grain size distribution and expected high strength by carbonizing the tungsten powder at higher temperatures. (Image is WC70S.)

WC70S

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Type Grain size (μm) WC(%) TC(%) FC(%) Fe(%) Mo(%) NVR(%)
WC25U 2.4 to 3.2 ≧99.8 6.13±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC30S 2.5 to 3.5 ≧99.8 6.15±0.03 ≦0.05 ≦0.02 ≦0.02 ≦0.01
WC35U 3.2 to 3.8 ≧99.8 6.13±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC40S 4.0 to 5.0 ≧99.8 6.15±0.03 ≦0.05 ≦0.02 ≦0.02 ≦0.01
WC45S 4.5 to 5.5 ≧99.8 6.13±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC60S 6.0 to 7.0 ≧99.8 6.15±0.03 ≦0.05 ≦0.02 ≦0.02 ≦0.01
WC70S 7.0 to 8.0 ≧99.8 6.13±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC80S 8.0 to 10.0 ≧99.8 6.15±0.03 ≦0.05 ≦0.02 ≦0.02 ≦0.01
WC100S 14 to 16 ≧99.8 6.15±0.03 ≦0.05 ≦0.02 ≦0.02 ≦0.01

Grain size is the average grain diameter by the Fischer method. For T.C, we respond to your requests beyond those listed above. WC is the remainder obtained by subtracting F.C, Fe, Mo and NVR from 100.
**NVR:Nonvolatile content

Ultrafine tungsten carbide powder

We succeeded in developing WC nano whose grain size is minimized to less than 0.1 μm by direct carbonization reaction of tungsten oxide and carbon powder.
We manufacture ultrafine tungsten carbide powder for binder-less alloy and cemented carbide that have high hardness and high strength.
This powder is ideal for raw materials for printed circuit board drills, end mills and the like, which require high hardness and high strength.

Ultrafine tungsten carbide powder

Ultrafine tungsten carbide powder (Nano powder )

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Type Grain size(μm) TC(%) FC(%) Fe(%) Mo(%) Additive
WC nano * 0.05 to 0.08 6.10 to 6.25 ≦0.02 ≦0.02

Grain size is the average grain diameter by the Fischer method.
* Indicates the converted grain diameter by the BET method.

Ultrafine tungsten carbide powder (Standard powder)

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Type Grain size(μm) TC(%) FC(%) Fe(%) Mo(%) Additive
WC02NR * 0.10 to 0.14 6.10 to 6.25 ≦0.25 ≦0.02 ≦0.02
WC04NR 0.45 to 0.49 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC05NR 0.50 to 0.55 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC06NR 0.56 to 0.65 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC07NR 0.55 to 0.70 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC02N * 0.10 to 0.13 6.20±0.05 ≦0.20 ≦0.02 ≦0.02 Grain growth inhibitor
WC04N 0.45 to 0.49 6.20±0.05 ≦0.15 ≦0.02 ≦0.02 Grain growth inhibitor
WC05N 0.50 to 0.55 6.20±0.05 ≦0.15 ≦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.

Ultrafine tungsten carbide powder (Uniform powder)

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Type Grain size (μm) TC(%) FC(%) Fe(%) Mo(%) Additive
WC02NRP * 0.10 to 0.14 6.10 to 6.25 ≦0.25 ≦0.02 ≦0.02
WC04NRP 0.45 to 0.49 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC05NRP 0.50 to 0.55 6.15±0.05 ≦0.15 ≦0.02 ≦0.02
WC02NP * 0.10 to 0.13 6.20±0.05 ≦0.20 ≦0.02 ≦0.02 Grain growth inhibitor
WC04NP 0.45 to 0.49 6.20±0.05 ≦0.15 ≦0.02 ≦0.02 Grain growth inhibitor
WC05NP 0.50 to 0.55 6.20±0.05 ≦0.15 ≦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.