CERATIZIT - инструмент для обработки камня 2016 EN
INTRODUCTION
10
CARBIDE – PROPERTIES
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Carbide properties depending on the Co contents and C grain size
Hardness (wear resistance)
Nozzles for water jet cutting
Type of stress
Wear
Corrosion
Carbide grade
Very high hardness: 2650 HV30
Small grain size: < 0.5 um
Low Co content: 0.4%
Corrosion resistance when adding Cr3C2
Hardness
Cobalt content
Grain size
Transverse rupture strength
Cobalt content
Grain size
Transverse rupture
strength
Toughness
Cobalt content
Grain size
Toughness
Micro-drilling
Type of stress
Wear
Deflection
Carbide grade
T.R.S.: > 4000 MPa
Small grain size: < 0.5 µm + VC
Low Co content ~ 8.5%
High wear resistance: 1930 HV30
Hot rolling
Type of stress
Wear due to abrasion
Built-up edge
Impact stress
Carbide grade
Sufficient fracture toughness: Co content 20%
Good wear resistance: 1030 HV30
Medium grain size coarse or extra-coarse
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