Introduction of Products

CEMENTED CARBIDE Ceramic Materials

Ceramic Materials
Nippon Tungsten developed fine ceramics since 1960s and has been a pioneer of those in Japan by adopting new technologies like HP and HIP method. The production of fine ceramics was started with alumina ceramics (white ceramics) and Al2O3-Tic (black ceramics). Nowadays it shows its development with various materials besides general oxides, such as carbides, nitrides and their compositions. In accordance with this, the applications of ceramics have ranged from cutting tools to wear & corrosion resistant components, semiconductor products and molds, so that ceramics become indispensable to the advanced machinery.
We offer a wide variety of fine ceramics to suit various applications, required strength, usage environments and so on.

Various Properties of Ceramic Materials

Mechanical Property
NotationMaterialColorDensity
(g/cm3)
Hardness
HV
Hardness
HRA
Bending strengyth
(MPa)
Young's modules
(GPa)
NPA-2Al2O3+TiCBlack4.2200094.0840390
NPA-03Al2O3White3.9170092.5520310
NPZ-1ZrO2Gray6.0125091.01800210
NPZ-10ZrO2White6.0120091.01500190
NPZ-2ZrO2+NbCBlack6.5145091.51700240
NPZ-28ZrO2+WCBlack10.7165092.52000330
NPZ-96ZrO2Black6.0110090.01300180
NPS-1SiCGray3.1230094.0*500390
NPS-5SiCBlack3.1230094.0*550410
NPN-3Si3N4Black3.3185093.51400310
NPL-3AlNGray3.3100087.0400310
NPCR-2Cordierite systemBlack2.5800-200130
*HR30N
Thermal & Electrical Properties
NotationMaterialCoefficient of thermal expansion
(x10-6/K)
Thermal conductivity
(W/(m*K))
Electrical resistivity
(Ω*m)
Thermal shock resistance
Δ‚s(K)
Withstand voltage
(kV/mm)
Features
NPA-2Al2O3+TiC7.8213~10-5250-Conductivity, Mirror finishing
NPA-03Al2O37.430>1012-20010.9Low coat, Wear resistance
NPZ-1ZrO210.53>10123008.4High strength, High toughness
NPZ-10ZrO210.53>10123008.9High strength, High toughness
NPZ-2ZrO2+NbC9.443~10-5300-Conductivity, High strength
NPZ-28ZrO2+WC8.5151~10-6350-Conductivity, High strength
NPZ-96ZrO210.83>1012-3008.8high strength, Insulation, Color (Black)
NPS-1SiC4.346>101600-High hardness, High rigidity, Thermal resistance
NPS-5SiC4.2100>103600-High hardness, High rigidity, Thermal resistance
NPN-3Si3N43.425>10128009.4High strength, Thermal shock resistance
NPL-3AlN5170>101240010.9High thermal conductivity
NPCR-2Cordierite system1.24>1012-12Low thermal expansion, Insulation
Values in parentheses are reference values.

Applied Product Examples of Ceramics (Incl. external data)

Material/
Property
Anti-wearHigh-strengthIinsulationConductivityAnti-heatAnti-corrosion
Al2O3
NPA-5
Nozzle,
Yarn guide,
Pipe liner,
Transfer jig for semiconductor
Cutting toolConductive component Refractory material,
Heat processing container and tool,
Catalyst support,
Crucible for medicine,
Reaction vessel
Al2O3-TiC
NPA-2
Cutting tool,
Magnetic slider
Bearing,
Sleeve,
Belt cleaner,
Sliding component
 Vacuum chuck,
Manufactural component for semiconductor,
Heater
Cutting tool 
ZrO2
NPZ-1
Mold,
Pulverizing ball,
Kneader component,
Manufactural component for semiconductor
Tablet mold,
Die
Measurement tool,
Manufactural component for semiconductor
   
Conductive ZrO2
NPZ-2
Mold,
Cutting blade
Die,
Thin blade
    
Si3N4
NPN-3
Cutting tool,
Bearing,
Pulverizing ball,
Nozzle,
Gap separator
Squeeze roll for pipes,
Gap separator,
Bearing,
Pulverizing component
  Welding,
Burner component,
Temperature measuring tube,
Turbo rotor,
Diesel chamber,
Glow plug
Bearing for medicine,
Gas blowing tube,
Impeller
SiC
NPS-1
Sealring,
Measurement contact
Imped case Manufactural jig for semiconductor,
Heater
 Gas blowing tube,
Impeller
AlN
NPL-2
Bonding tool   Heat sink,
Semiconductor substrate,
Heat-equalization sink
 

Inquiry

OVERSEAS SALES PROMOTION OFFICE
  • TEL +81-942-50-0053 / FAX +81-942-50-0054
Nippon Tungsten Co., Ltd.
2-8, Minoshima 1-chome, Hakata-ku, Fukuoka, 812-8538 Japan
Phone TEL +81-942-50-0053 / FAX +81-942-50-0054
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