A.L.M.T. Corp.

Tungsten carbide powder

Tungsten carbide powder

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

Tungsten carbide powder

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Type Particle 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

Particle size is the average particle 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 tungsten carbide powder with much lower volume than conventional one.
The powder 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 Particle size(μm) TC(%) FC(%) Fe(%) Mo(%) Additive
WC05LV 6.10~6.20 ≦0.10 ≦0.05 ≦0.02
WC06LV 0.50 to 0.69 6.10~6.20 ≦0.10 ≦0.05 ≦0.02
WC08LV 0.70 to 0.89 6.10~6.20 ≦0.10 ≦0.05 ≦0.02
WC10LV 0.90 to 1.10 6.10~6.20 ≦0.10 ≦0.05 ≦0.02
WCR05LV 6.10~6.20 ≦0.10 ≦0.05 ≦0.02 Particle growth inhibitor
WCR06LV 0.55 to 0.64 6.10~6.20 ≦0.10 ≦0.05 ≦0.02 Particle growth inhibitor
WCR07LV 0.65 to 0.85 6.10~6.20 ≦0.10 ≦0.05 ≦0.02 Particle growth inhibitor
Expected effects
  1. Lower shrinkage during sintering the pressed powder. (commonalizing molds with tungsten carbide powder with different particle size)
  2. Possible to reduce molding pressure. ( preventing cracks in pressed body with complex shape)
  3. Possible to upsize sintered body.
  4. Possible to sinter the powder more efficiently per batch. (improving productivity in mixing process)
  5. Possible to reduce mixing time.

Upsizing sintered body. Comparison with 0.8 µm tungsten carbide powder

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

Reducing molding pressure

Reduced molding pressure

Low volume and fine tungsten carbide powder (with particle growth inhibitor)

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Type Particle 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 ≦0.10 ≦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 shock resistant tools

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

WC70S

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Type Particle size (μm) WC(%) TC(%) FC(%) Fe(%) Mo(%) NVR(%)
WC25S 2.4 to 3.2 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC30S 2.5 to 3.5 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC35S 3.2 to 3.8 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC40S 4.0 to 5.0 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC45S 4.5 to 5.5 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC60S 6.0 to 7.0 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC70S 7.0 to 8.0 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC80S 8.0 to 10.0 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01
WC100S 14 to 16 ≧99.8 6.15±0.05 ≦0.10 ≦0.02 ≦0.02 ≦0.01

Particle size is the average particle 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 developed WC nano powder with particle size 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 need high hardness and high strength.
Also, this powder is suitable for various applications such as raw materials for drills and end mills used for printed circuit boards which require high hardness and high strength.

Ultrafine tungsten carbide powder

Ultrafine tungsten carbide powder (Nano powder )

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

Particle size is the average particle diameter by the Fischer method.
* Indicates the converted particle diameter by the BET method.

Ultrafine tungsten carbide powder (Standard powder)

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Type Particle 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
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

Particle size is the average particle diameter by the Fischer method.
* indicates the converted particle diameter by the BET method.

Ultrafine tungsten carbide powder (Uniform powder)

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Type Particle 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
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

paricle size is the average particle diameter by the Fischer method.
* indicates the converted particle diameter by the BET method.