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    Glass-like Carbon has a pore-free and amorphous structure like that of glass and combines the features of carbon with those of glass.It has a high corrosion resistance, high hardness,high uniformity,and less particle. Considering the characteristics, Glass-like Carbon is used in Semiconducor Manufacturing Process, heat treatment Process etc.  
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    Carbon & Ceramics
    Carbon Sliding Materials
       Protective Film for Automotive       Body
               Brushes for Automobile
   Features      Planar Antenna for Foward        Looking Radar System
  Chemical stability :  
          HITALOCK has such a nature that it is not easily attacked by ordinary solution of      Planar Antenna
          acids, alkalis, of organic solvents.Chemical resistance is described in more detail in      Disc Brake Pads
          item 4 "Chemical properties".      Drum Brake Units
  High thermal conductivity :      Products Category List
          Owing to HITALOCK's high thermal conductivity, heat generated at sliding part can be      Products Alphabetical List
          effectively dissipated. Thus, counterface material may not be damaged with minimized      HOME
           wear of HITALOCK.      Hitachi Chemical. Co, Ltd.
  High heat resistance :    
          Heat can hardly degrade the machanical strength and chemical properties of  
          HITALOCK. If ample oxygen exists, oxidation will be started at a temperature over 350  
          C or so. When no oxygen is supplied, however, HITALOCK will not be oxidized even at  
          a higher temperature between 450C and 500C(dependant on grade).  
  High heat-shock resistance :  
          Coefficient of thernal expansion is very low as compared with that of other metal  
          materials. HITALOCK withstands a repetition of abrupt temperature change, incurring  
          little crack. It should also be noted that HITALOCK impregnated with resin or metal has  
          a somehow lower heat heat-shock resistance.  
  Self-lubricating property :  
          HITALOCK represents an outstanding self-lubrication, namely, it can be used without  
          lubrication. Owing to this important nature, HITALOCK is very suitable for use where  
          undersirable contamination by lubricant or similar accuracy to the case of ordinary  
          metal materials.  
  Excellent machinability :  
          HITALOCK has an excellent machinability, and can be machined on machine tools  
          such as lathes, drilling machines, milling machines, etc., obtaining the similar  
          accuracy to the case of ordinary metal materials.  
  Others :  
          One of the major advantages of carbons is its porosity. By ipregnating the carbons with  
          a resin or the like in the pores, they can be made impervious. After such treatment,  
          carbons may be used as sealing materials. Further with this treatment, mechanical  
          strength such as compressive strength, bending strength, etc. of carbons can be  
          increased also along with its improved wear resistance. It should be noted that  
          consultation should be made with us for examination of your intended uses of  
          HITALOCK under any applicable regulations.