STANDARD BITS 
    Ø 3 mm                        
    Ø 4 mm                        
    Ø 6 mm                        
    Ø 1/8" (3.18 mm)         
    OTHER Ø                     
    "BOX BITS"                  
    PARALLEL BITS            
    SPECIAL SHAPES         
   
    "GRAVO"-TYPES  
    Ø 3.18 * 105 ... 130      
    Ø 4.36 * 155 ... 185      
    
    SERVICE   
    GRINDING TIPS           
    COATING                     
    
    
    
      
    
     
    
    
    
    
    
    
    
 
 
 
 
 
 
 
 
 
 
 
 
 Carbide? Some commonly used grades at a glance.
ISO Code WC Co TiC +
TaNbC
Density Hardness
Rockwell
Hardness
Vickers
Yield strength Grain size
max.
  [%] [%] [%] [g/cm3] [HRA] [HV30] [N/mm2] [1/1000 mm]
K05 95.0 4.0 1.0 15.0 92.5 1850 2200 1.50
K10 94.5 5.0 0.5 14.9 92.0 1800 2400 1.50
K20 93.0 7.0   14.7 91.5 1700 2500 2.00
K20UF 93.0 7.0   14.7 91.5 1700 2500 0.80
K40 89.0 11.0   14.4 89.0 1360 2700 2.00
K44UFX 88.0 12.0   14.3 92.0 1780 2850 0.25
G20 89.0 11.0   14.4 89.5 1420 2700 2.50
G30 85.0 15.0   14.0 88.0 1250 2900 2.50
P30 74.0 11.0 15.0 12.4 89.5 1420 2400 2.50
P40 77.0 13.0 10.0 12.8 89.3 1390 2500 3.00
WC
Co
TiC + TaNbC
Yield strength
Tungsten carbide: Provides the extraordinary hardness
Cobalt: Embedding material, binding agent
Titanium carbide, Tantalum Niobium carbide: Other hard materials that provide more toughness.
Tensile strength.
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